Journal articles: 'Mesoporou'

1

Preethi, T., M. P. Padmapriya, B. Abarna, and G. R. Rajarajeswari. "Choline chloride–zinc chloride ionic liquid as a green template for the sol–gel synthesis of mesoporous titania." RSC Advances 7, no. 17 (2017): 10081–91. http://dx.doi.org/10.1039/c6ra28478g.

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Zhang, Xin, Lian Jun Wang, and Wan Jiang. "Preparation of Stable Pt Nanoparticles Supported by Mesoporous Silica SBA-15." Materials Science Forum 745-746 (February 2013): 539–44. http://dx.doi.org/10.4028/www.scientific.net/msf.745-746.539.

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A simple two-step procedure towards the Pt nanoparticles and mesoporou silicate SBA-15 composite was developed in this work. The ultrasonic irradiation and the calcinations involved in the preparation did not destroy the size and morphology of prepared Pt nanoparticles, and no agglomeration of Pt nanoparticles was observed, thus stable Pt nanoparticles supported by SBA-15 host were formed. The hexagonal ordered structure of SBA-15 also remained. This stable composite are mainly used as the starting material in fabricating stable Pt nanoparticles doped glass.

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Nguyen Truong Gia, Hao, Huy Tran Huynh Gia, Phuong Nguyen Thi Truc, Tu Le Nguyen Quang, Dung Nguyen Van, An Ngo Thanh, and Long Nguyen Quang. "Preparation and characterization of mesoporous zeolite from solid waste." Vietnam Journal of Catalysis and Adsorption 9, no. 4 (December 31, 2020): 64–69. http://dx.doi.org/10.51316/jca.2020.071.

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In this study, experimental results on mesoporous zeolite preparation from a common solid waste, the rice husk ash by a top-down and bottom-up approach were reported. In top-down method, the consecutive treatments of zeolite by acid and alkaline in the presence of a cationic surfactant (CTAB) successfully generated mesopores in the zeolite. In bottom-up method, the sufficient added amount of CTAB in the gel composition could form mesopores in the zeolite. The obtained mesoporous zeolite possessed mesopore with a size of around 3-6 nm in both top-down and bottom-up approaches. As a result, the pore volume of the mesoporous zeolite was significantly increased by more than 60% when comparing to the “parent” rice-husk-ash derived zeolite. Significantly, the mesopore surface area of the mesoporous zeolite could be 2.4 times higher than that of the parent zeolite.

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Liang, Jun, and Fu Ping Wang. "Synthesis and Characterization of Mesoporous SAPO-11 by Using Carbon Particles." Advanced Materials Research 306-307 (August 2011): 1576–79. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1576.

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Mesoporous SAPO-11 was synthesized hydrothermally by using carbon black and di-n-propylamime (DPA) as templates for the expected mesopores and micropores respectively. The samples were characterized with XRD, nitrogen physisorption, SEM and NH3-TPD techniques. The mesopore volumes of mesoporous SAPO-11 are in range of 0.037 - 0.052 cm3/g. The same amounts of the acid sites according to NH3-TPD results in both mesoporous and conventional SAPO-11 products indicate that the carbon black involved in the synthesis doesn’t affect the crystallization efficiency of SAPO-11. The mesoporous SAPO-11 samples exhibit higher activity compared with conventional ones, especially under low reaction temperature. The enhanced activity can be attributed to the introduction of the mesopores in the zeolite crystals, which decreases the intracrystalline mass transfer limitations.

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Gao, Qiang, Zong Wei Chen, Jun Xu, and Yao Xu. "pH-Controlled Drug Release from Mesoporous Silica Spheres with Switchable Gates." Advanced Materials Research 236-238 (May 2011): 2142–45. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2142.

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Mesoporous silica sphere (MSS) with switchable gates was prepared by the graft of pH-sensitive propyldiethylenetriamine groups (multiamine chains) around mesopore outlets. The textural parameters of the resultant material had been analyzed. In the following test of in vitrodrug release, the gated mesoporous material showed high response to solution pH. At high pH (pH 7.5), ibuprofen (IBU) that loaded in this carrier released rapidly and completely (within 2 h); at low pH (pH 4.0 or 5.0), only a small part of the IBU (13 wt%) was slowly released from this carrier and the most of IBU was effectively confined in mesopores.

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Jiang, Yan Qiu, Ye Tang Pan, Xiao Wei Li, Wen Jing Cheng, Jian Min Sun, Kai Feng Lin, and Zi Chen Wang. "Preparation and Characterization of Hollow Spheres with Cubic Mesoporous Shell." Advanced Materials Research 785-786 (September 2013): 382–85. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.382.

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This work demonstrated an approach of oil/water (O/W) microemulsion on preparation of hollow spheres with mesopores in the shell, in which a cationic surfactant was used as structural directing agent, alkane molecule as mesopore-swelling agent and oil droplets. The morphology and pore architecture of the obtained hollow spheres were characterized by SEM, XRD, TEM and N2adsorption/desorption isotherms. Cubic (Ia3d) mesopores are present in the shell and provide open channels for mass transport in between the hollow core and outer environment. The obtained hollow spheres with cubic mesoporous shell possess the potential of being used as nanoreactor and nanocontainer in the fields of catalysis and drug delivery.

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Tagaya, Motohiro, Kenji Shinozaki, and Yuri Maruko. "A Simple Incorporation Route of Tris(8-hydroxyquinoline)aluminum(III) into Transparent Mesoporous Silica Films and Their Photofunctions." Journal of Applied Chemistry 2017 (August 14, 2017): 1–10. http://dx.doi.org/10.1155/2017/7351263.

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The molecular aggregation states of tris(8-hydroxyquinoline)aluminum(III) (Alq) adsorbed in the transparent mesoporous silica (MPS) films with the different pore sizes (3.0 and 5.4 nm) were successfully clarified. The Alq molecules were easily incorporated into the films from the solution without the segregation on the surfaces. The adsorbed amount of Alq was controlled by changing the added amount in the initial solution to resultantly give the transparent and yellow-color films. The photoluminescence spectra significantly revealed that the state of Alq molecules in the mesopore varied depending on the adsorbed amount of Alq as well as the pore size, suggesting the characteristic mobility of the adsorbed Alq molecules in the mesopores as compared with that at the bulk or solution state. Therefore, the guest-guest interactions between Alq molecules as well as the host-guest interactions between Alq and mesopore were elucidated. This finding by the use of the mesoporous film hosts will be utilized for including luminescence species and be applicable for optical devices.

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Kang, Jukyoung, Tack-Jin Kim, Jong Won Park, Kyo-Young Lee, Doh Hee Park, Sungbin Park, Seok Kim, and Yongju Jung. "A Mesoporous Chelating Polymer-Carbon Composite for the Hyper-Efficient Separation of Heavy Metal Ions." Journal of Nanoscience and Nanotechnology 20, no. 5 (May 1, 2020): 3042–46. http://dx.doi.org/10.1166/jnn.2020.17471.

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The removal of heavy-metal ions from wastewater is an important objective from a public-health perspective, and chelating agents can be used to achieve this aim. Herein, we report the synthesis of mesoporous carbon as a chelating polymer host using nanoarchitectonics approach. Carboxymethylated polyethyleneimine, a chelating polymer, was incorporated into the mesopore walls of mesoporous carbon to create a polymer-mesoporous-carbon composite. Nitrogen adsorption– desorption experiments and scanning electron microscopy (SEM) were used to illustrate the structural advantages of the composite. Co2+ adsorption by the composite material was examined using cobalt nitrate solutions at pH 3. The study revealed that the Co2+-absorption data are most closely modeled by the Langmuir isotherm. The maximum adsorption capacity, calculated by linear regression, was determined to be about 40 mg-Co/g-composite at pH 3. The composite exhibited about a six-times higher adsorption capacity toward a dilute Co solution (12.5 ppm) than that of the pristine mesoporous carbon. In addition, the composite showed a substantially higher distribution coefficient (Kd = 1.54×105) compared to that (Kd = 2.05×102) of the mesoporous carbon. Overall, we expect that the mesoporous composite, with its large mesopores (~20 nm), will be in high demand for adsorption applications.

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Nakanishi, Kazuki, and Kazuyoshi Kanamori. "Phase Separation in Sol-Gel Systems of Organic-Inorganic Hybrids." Advances in Science and Technology 45 (October 2006): 759–68. http://dx.doi.org/10.4028/www.scientific.net/ast.45.759.

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Organic-inorganic hybrid monoliths with well-defined macropores and/or mesopores have been synthesized by a sol-gel process accompanied by polymerization-induced phase separation. Using aklyltrialkoxysilanes and alkylene-bridged alkoxysilanes, two different categories of organo-siloxane networks have been characterized in view of macroporoisity based on phase separation as well as mesoporosity based on supramolecular templating by surfactants. The alkyl-terminated polysiloxane network exhibited substantial surface hydrophobicity together with the mechanical flexibility. On the other hand, the alkylene-bridged network behaved much more similarly to those prepared from tetraalkoxysilanes with regard to surface hydrophilicity, mechanical rigidness and mesopore-forming ability. Supramolecular templating of mesopores embedded in the gel skeletons comprising well-defined macroporous network has proven to give wide variety of hierarchically designed macro-mesoporous organic-inorganic hybrid materials.

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Yokogawa, Yoshiyuki, Ryota Fumimoto, and Suguru Inamura. "Protein Adsorption on Spark Plasma Sintered Mesoporous Silicate Compacts." Key Engineering Materials 758 (November 2017): 14–18. http://dx.doi.org/10.4028/www.scientific.net/kem.758.14.

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The preparation of mesoporous silica compact through spark plasma sintering (SPS) and adsorption / desorption of protein onto SPS mesoporous silica (MPS) compact is reported. MPS powders, prepared using triblock copolymer, PEO20PPO70PEO20, were compacted in carbon die and heated at 400 or 500 °C for 5 min under uniaxial pressure. The products are referred to as MPS-400 and MPS-500, respectively. The MPS sinters keep the mesoporous configuration, but the mode diameter of MPS-400 was smaller than that of MPS powders and MPS-500. The adsorbed amounts of protein on MPS-400 was higher than that on MPS-500, while the pore diameter, BET surface area, pore volume of MPS-400 are less than those of MPS-500. The interstices in MPS-500 are narrower than that in MPS-400, which may restrict the protein to penetrate through the narrow channels to reach the mesopores of MPS. The quantity of adsorbed amount of protein on MPS sinters does not depend on mesopore configuration but on the macropore configuration of the MPS sinters.

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11

Wu, Jin-Ming, Igor Djerdj, Till von Graberg, and Bernd M. Smarsly. "Mesoporous MgTa2O6 thin films with enhanced photocatalytic activity: On the interplay between crystallinity and mesostructure." Beilstein Journal of Nanotechnology 3 (February 13, 2012): 123–33. http://dx.doi.org/10.3762/bjnano.3.13.

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Ordered mesoporous, crystalline MgTa2O6 thin films with a mesoscopic nanoarchitecture were synthesized by evaporation-induced self-assembly (EISA) in combination with a sol–gel procedure. Utilization of novel templates, namely the block copolymers KLE (poly(ethylene-co-butylene)-b-poly(ethylene oxide)) and PIB6000 (CH3C(CH3)2(CH2C(CH3)2)107CH2C(CH3)2C6H4O(CH2CH2O)100H), was the key to achieving a stable ordered mesoporous structure even upon crystallization of MgTa2O6 within the mesopore walls. The effect of the calcination temperature on the ability of the mesoporous films to assist the photodegradation of rhodamine B in water was studied. As a result, two maxima in the photocatalytic activity were identified in the calcination temperature range of 550–850 °C, peaking at 700 °C and 790 °C, and the origin of this was investigated by using temperature-dependent X-ray scattering. Optimal activity was obtained when the mesoporous film was heated to 790 °C; at this temperature, crystallinity was significantly high, with MgTa2O6 nanocrystals of 1.6 nm in size (averaged over all reflections), and an ordered mesoporous structure was maintained. When considering the turnover frequency of such photocatalysts, the optimized activity of the present nanoarchitectured MgTa2O6 thin film was ca. four times that of analogous anatase TiO2 films with ordered mesopores. Our study demonstrated that high crystallinity and well-developed mesoporosity have to be achieved in order to optimize the physicochemical performance of mesoporous metal-oxide films.

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Rathouský, Jiří, Markéta Zukalová, Arnošt Zukal, and Jiří Had. "Homogeneous Precipitation of Siliceous MCM-41 and Bimodal Silica." Collection of Czechoslovak Chemical Communications 63, no. 11 (1998): 1893–906. http://dx.doi.org/10.1135/cccc19981893.

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A new procedure for synthesis of MCM-41 siliceous molecular sieves with regular morphologies and bimodal mesoporous silica was developed. It is based on the precipitation from an isotropic reaction mixture. The decrease in pH, which causes the formation of solid particles, is achieved by the hydrolysis of ethyl acetate. The procedure is excellently reproducible and enables to obtain not only siliceous MCM-41 with the highest degree of pore ordering and phase purity but also a material of a new type, viz. bimodal silica containing both the MCM-41 mesopore system and the system of larger mesopores whose size ranges from 15 to 25 nm.

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Yun, Hui Suk. "Design of Hierarchically Porous Materials for Bone Tissue Regeneration." Key Engineering Materials 441 (June 2010): 139–53. http://dx.doi.org/10.4028/www.scientific.net/kem.441.139.

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Mesoporous materials synthesized using a polymer templating route have attracted considerable attention in the field of bone tissue regeneration because their unique pore textural properties (high specific surface area, pore volume and controllable mesopore structure) can promote rapid bone formation. In addition, their potential use as a drug delivery system has been highlighted. The scaffolds in bone tissue regeneration should contain 3D interconnected pores ranging in size from 10 to 1000 μm for successful cell migration, nutrient delivery, bone in-growth and vascularization. Meso-sized pores are too small to carry out these roles, even though mesoporous materials have attractive functionalities for bone tissue regeneration. Therefore, a technique linking mesoporous materials with the general scaffolds is required. This paper reviews recent studies relating the development of new porous scaffolds containing mesopores for using in bone tissue regeneration. All the suggested methods, such as a combination of polymer templating methods and rapid prototyping technique can provide hierarchically 3D porous bioactive scaffolds with well interconnected pore structures in the nano to macro size range, good molding capability, biocompatibility, and bioactivity. The new fabrication techniques suggested can potentially be used to design ideal scaffolds in bone tissue regeneration.

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ZHAO, J., S. Y. CHANG, Y. C. HAO, L. YU, Z. J. ZHAO, G. G. WANG, and B. J. LIU. "FABRICATION OF MESOPOROUS WITHIN ZEOLITE Y USING MIXED TEMPLATES." Digest Journal of Nanomaterials and Biostructures 16, no. 1 (January 2021): 35–40. http://dx.doi.org/10.15251/djnb.2021.161.35.

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Mesoporous zeolite Y was prepared using a block copolymerand hexadecyltrimethyl ammonium bromide as mixed templates. Copolymer−ionic surfactant complexes were formed and grafted into aluminosilicate gel, introducing mesoporous into zeolite. The XRD results indicated the mesoporous sample showed high crystalline and hydrothermal stability indicating a negligible damaging effect on the framework. Nitrogen adsorption and desorption results of mesoporous zeolite showed the uniform property of mesopore size distribution in the range of 2.0-5.0 nm with a greater surface area (630 m2 g -1 ), mesopore volume (0.324 cm3 g -1 ), and mesopore area (99 m2 g -1 ). A novel method was provided to develop an available mesoporosity.

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ZHAO, J., S. Y. CHANG, Y. C. HAO, L. YU, Z. J. ZHAO, G. G. WANG, and B. J. LIU. "FABRICATION OF MESOPOROUS WITHIN ZEOLITE Y USING MIXED TEMPLATES." Digest Journal of Nanomaterials and Biostructures 16, no. 1 (January 2021): 35–40. http://dx.doi.org/10.15251/djnb.2022.161.35.

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Mesoporous zeolite Y was prepared using a block copolymerand hexadecyltrimethyl ammonium bromide as mixed templates. Copolymer−ionic surfactant complexes were formed and grafted into aluminosilicate gel, introducing mesoporous into zeolite. The XRD results indicated the mesoporous sample showed high crystalline and hydrothermal stability indicating a negligible damaging effect on the framework. Nitrogen adsorption and desorption results of mesoporous zeolite showed the uniform property of mesopore size distribution in the range of 2.0-5.0 nm with a greater surface area (630 m2 g -1 ), mesopore volume (0.324 cm3 g -1 ), and mesopore area (99 m2 g -1 ). A novel method was provided to develop an available mesoporosity.

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Balach, Juan, Flavio Soldera, Diego F. Acevedo, Frank Mücklich, and César A. Barbero. "A Direct and Quantitative Three-Dimensional Reconstruction of the Internal Structure of Disordered Mesoporous Carbon with Tailored Pore Size." Microscopy and Microanalysis 19, no. 3 (March 27, 2013): 745–50. http://dx.doi.org/10.1017/s1431927613000238.

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AbstractA new technique that allows direct three-dimensional (3D) investigations of mesopores in carbon materials and quantitative characterization of their physical properties is reported. Focused ion beam nanotomography (FIB-nt) is performed by a serial sectioning procedure with a dual beam FIB-scanning electron microscopy instrument. Mesoporous carbons (MPCs) with tailored mesopore size are produced by carbonization of resorcinol-formaldehyde gels in the presence of a cationic surfactant as a pore stabilizer. A visual 3D morphology representation of disordered porous carbon is shown. Pore size distribution of MPCs is determined by the FIB-nt technique and nitrogen sorption isotherm methods to compare both results. The obtained MPCs exhibit pore sizes of 4.7, 7.2, and 18.3 nm, and a specific surface area of ca. 560 m2/g.

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Lakhi, Kripal S., Dae-Hwan Park, Gurwinder Singh, Siddulu N. Talapaneni, Ugo Ravon, Khalid Al-Bahily, and Ajayan Vinu. "Energy efficient synthesis of highly ordered mesoporous carbon nitrides with uniform rods and their superior CO2adsorption capacity." Journal of Materials Chemistry A 5, no. 31 (2017): 16220–30. http://dx.doi.org/10.1039/c6ta10716h.

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Fan, Ming Xia, Xiao Ling Chen, Jing Jing Chen, and Lei Mao. "Effects of Activation Conditions on Preparation of Coal Tar Pitch Based Mesoporous Activated Carbon Using Template and KOH Activation Method." Advanced Materials Research 634-638 (January 2013): 2170–75. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2170.

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Mesopores are essential to improve transport of molecules within porous network and to facilitate adsorption of larger molecules. Mesoporous activated carbons (MACs) were prepared by template synthesis and KOH activation, using modified coal tar pitch and nanosized silica as carbon precursor and imprinting template respectively. The influences of different activation conditions, including KOH/C mass ratio, activation temperature and activation time on the pore structure of MACs have been studied. The SBET, total volume and mesopore volume of the result MAC were 1356 m2/g, 0.910mL/g and 0.704 mL/g respectively, when activation conditions with KOH/C mass ratio was 3.6:1, activation temperature was 850°C and activation time was 2.0h. It is possible to control their pore structure by selecting appropriate activation conditions depending on the final application of the MACs.

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Wang, P. F., H. X. Jin, M. Chen, D. F. Jin, B. Hong, H. L. Ge, J. Gong, et al. "Microstructure and Magnetic Properties of Highly Ordered SBA-15 Nanocomposites Modified withFe2O3andCo3O4Nanoparticles." Journal of Nanomaterials 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/269861.

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Owing to the unique order mesopores, mesoporous SBA-15 could be used as the carrier of the magnetic nanoparticles. The magnetic nanoparticles in the frame and the mesopores lead to the exchange-coupling interaction or other interactions, which could improve the magnetic properties of SBA-15 nanocomposites. Mesoporous Fe/SBA-15 had been prepared via in situ anchoring Fe2O3into the frame and the micropores of SBA-15 using the sol-gel and hydrothermal processes. Co3O4nanoparticles had been impregnated into the mesopores of Fe/SBA-15 to form mesoporous Fe/SBA-15-Co3O4nanocomposites. XRD, HRTEM, VSM, and N2physisorption isotherms were used to characterize the mesostructure and magnetic properties of the SBA-15 nanocomposites, and all results indicated that the Fe2O3nanoparticles presented into the frame and micropores, while the Co3O4nanoparticles existed inside the mesopores of Fe/SBA-15. Furthermore, the magnetic properties of SBA-15 could be conveniently adjusted by the Fe2O3and Co3O4magnetic nanoparticles. Fe/SBA-15 exhibited ferromagnetic properties, while the impregnation of Co3O4nanoparticles greatly improved the coercivity with a value of 1424.6 Oe, which was much higher than that of Fe/SBA-15.

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YIN, JIANBO, and XIAOPENG ZHAO. "LARGE ENHANCEMENT IN ELECTRORHEOLOGICAL ACTIVITY OF MESOPOROUS CERIUM-DOPED TIO2 FROM HIGH SURFACE AREA AND ROBUST PORE WALLS." International Journal of Modern Physics B 19, no. 07n09 (April 10, 2005): 1071–76. http://dx.doi.org/10.1142/s0217979205029870.

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Considering the importance of large interfacial or surface polarization to strong electrorheological (ER) effect, we developed a high surface area mesoporous doped TiO 2 ER material by using block-copolymer. By comparing the ER experiments between samples with mesopore and without mesopore, we demonstrate a very large enhancement in ER activity of mesoporous ER material and its yield stress is 100 times that of the pure TiO 2 ER material and 5-8 times that of single doped TiO 2 without mesoporous structure. We give a preliminary discussion about the improvement in ER activity based on previous dielectric analysis.

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Nakahira, Atsushi, Hironobu Nishimoto, Yukitaka Hamada, and Yuki Yamasaki. "Synthesis and Characterization of Dense Mesoporous Alumina." Key Engineering Materials 616 (June 2014): 252–57. http://dx.doi.org/10.4028/www.scientific.net/kem.616.252.

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Dense mesoporous alumina bulks were successfully synthesized by a hydrothermal hot-pressing (HHP) method for mesoporous alumina powders prepared as starting material with a high BET surface area and narrow pore size distribution. As a result, mesoporous alumina HHP bulks had high density with uniformity pore size distribution and a high specific surface area. Their microstructural features for dense mesoporous alumina bulks were observed by SEM. The characterization of mesopores was examined.

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Wang, Zeng-Rong, Long Liu, Xue Zhang, Jia-Lin Xu, and Qiang Sun. "Low Temperature Synthesis of Mesoporous SiC in Dual-Confined Spaces via Magnesiothermic Reduction." Nano 14, no. 09 (September 2019): 1950115. http://dx.doi.org/10.1142/s1793292019501157.

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Silicon carbide (SiC), especially mesoporous SiC has been in immense vogue for more than a decade because of its intriguing properties and wide applications. However, it is still challenging to synthesize mesoporous SiC with good structural integrality, large specific surface area and desirable porosity at a low temperature. In this study, we reported a “dual-confined spaces”-assisted synthesis of mesoporous SiC using well-assembled SiO2/carbon composite as precursor via a magnesiothermic reduction process. The well-crystallinity mesoporous SiC presented a mesopore structure with high specific surface area of 267.3 m2 g[Formula: see text] and large mesopore size of ca. 10[Formula: see text]nm can be directly fabricated at a temperature of at least 550∘C and the optimum synthesis temperature is 650∘C. During the synthesis, mesoporous carbon matrix and a pressure-tight stainless steel reactor were served as “dual-confined spaces” to avoid the aggregation of silica and the silicon residue left in the final SiC sample. Furthermore, the as-prepared mesoporous SiC showed prominent performance as catalyst support for the reduction of 4-nitrophenol to 4-aminophenol.

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WANG, X. L., J. P. TU, J. Y. XIANG, and X. H. HUANG. "NANOSTRUCTURED Si/ZrO2 MESOPOROUS COMPOSITE FILM ANODES FOR LITHIUM ION BATTERIES." Functional Materials Letters 02, no. 01 (March 2009): 23–26. http://dx.doi.org/10.1142/s1793604709000491.

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Mesoporous ZrO 2 with pore sizes of 5–20 nm were prepared using various structure-directing agents. Nanoscale Si was combined with mesoporous ZrO 2 to be used as anodes for lithium ion batteries. In the range of the Si / ZrO 2 mole ratio from 1:1 to 6:1, electrochemical investigations indicated that the mesoporous composite film with the mole ratio of 4:1 had larger capacity and better cyclability upon cycling. Its discharge capacity preserved 1251 mAh/g after 50 cycles. It is believed that mesoporous ZrO 2 could effectively alleviate the volume change arising from Li – Si alloying during the lithiation/delithiation process and provided channels with its mesopores for lithium ions passing through. The Si / ZrO 2 composite film with a pore size of 20 nm presented the best electrochemical performance, indicating that the larger mesopores could facilitate insertion/removal of lithium ions.

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Cheng, Yi Bing, Kun Wang, and Huan Ting Wang. "A New Route of Forming Silicon Carbide Nanostructures with Controlled Morphologies." Key Engineering Materials 403 (December 2008): 149–52. http://dx.doi.org/10.4028/www.scientific.net/kem.403.149.

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Mesoporous silica-carbon nanocomposites (C-SiO2) were synthesized and used as a host carrier in carbothermal reduction to fabricate highly crystalline silicon carbide nanoparticles and nanofibers. SiC nuclei were introduced into the mesopores as seeds by infiltration of preceramic precursor polycarbosilane (PCS) prior to the heat-treatment of carbothermal reduction. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption analysis were used to characterize C-SiO2 nanocomposites and SiC products. Crystalline SiC was not formed in the mesoporous C-SiO2 nanocomposites with a low carbon content (e.g. C/SiO2 ratio = 1.01) at 1450 °C. However, when a given amount of PCS was infiltrated into the mesoporous C-SiO2, SiC nanofibers and nanoparticles were produced at 1450 °C even in the low carbon content sample. The major morphology formed from the mesoporous C-SiO2 nanocomposites without PCS infiltration was nanoparticles, while nanofibers dominated in the products of the PCS infiltrated compositions. The results indicate that the conversion of PCS into SiC nuclei in mesopores prior to carbothermal reduction has facilitated the formation of SiC nanofibers. Therefore infiltration of seeds into mesopores of C-SiO2 precursors appears to be an effective means in accelerating the reaction and controlling of nanostructures of silicon carbide.

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Rajesh, John, and Kwang-Soon Ahn. "Facile Hydrothermal Synthesis and Supercapacitor Performance of Mesoporous Necklace-Type ZnCo2O4 Nanowires." Catalysts 11, no. 12 (December 13, 2021): 1516. http://dx.doi.org/10.3390/catal11121516.

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In this work, mesoporous ZnCo2O4 electrode material with necklace-type nanowires was synthesized by a simple hydrothermal method using water/ethylene glycol mixed solvent and subsequent calcination treatment. The ZnCo2O4 nanowires were assembled by several tiny building blocks of nanoparticles which led to the growth of necklace-type nanowires. The as-synthesized ZnCo2O4 nanowires had porous structures with a high surface area of 25.33 m2 g−1 and with an average mesopore of 23.13 nm. Due to the higher surface area and mesopores, the as-prepared necklace-type ZnCo2O4 nanowires delivered a high specific capacity of 439.6 C g−1 (1099 F g−1) at a current density of 1 A g−1, decent rate performance (47.31% retention at 20 A g−1), and good cyclic stability (84.82 % capacity retention after 5000 cycles). Moreover, a hybrid supercapacitor was fabricated with ZnCo2O4 nanowires as a positive electrode and activated carbon (AC) as a negative electrode (ZnCo2O4 nanowires//AC), which delivered an energy density of 41.87 Wh kg−1 at a power density of 800 W kg−1. The high electrochemical performance and excellent stability of the necklace-type ZnCo2O4 nanowires relate to their unique architecture, high surface area, mesoporous nature, and the synergistic effect between Zn and Co metals.

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Kawahara, Ryosuke, Kazuma Niinomi, Junko N. Kondo, Mitsuhiro Hibino, Noritaka Mizuno, and Sayaka Uchida. "A functional mesoporous ionic crystal based on polyoxometalate." Dalton Transactions 45, no. 7 (2016): 2805–9. http://dx.doi.org/10.1039/c5dt04556h.

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A mesoporous ionic crystal is synthesized with a polyoxometalate and a macrocation with polar cyano groups. The compound possesses one-dimensional mesopores and shows high proton conductivity and catalytic activity, which are due to the water molecules in the mesopores.

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Lin, Licheng, Deen Gu, Yonghai Ma, Yatao Li, and Kai Yuan. "Facile Preparation of N/F Co-Doped Mesoporous TiO2 vis-Photocatalyst based on a Bi-Functional Template." Nano 15, no. 11 (November 2020): 2050144. http://dx.doi.org/10.1142/s1793292020501441.

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Developing nonmetal-doped mesoporous TiO2 is highly attractive for preparing semiconductor visible photocatalyst with high activities. Here, we prepare N/F co-doped mesoporous TiO2 with high vis-photocatalytic activities by a simple liquid phase deposition process followed by annealing in air using C[Formula: see text]TAB as a bi-functional template (forming mesoporous and providing dopants). N2 adsorption isotherms, low-angle X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicate the formation of wormhole-like mesoporous structure. Wide-angle XRD and high-resolution TEM demonstrate the presence of anatase TiO2 mesopore wall. XPS analyses reveal that N is doped into TiO2 lattice in the forms of substitutional and interstitial N species, and that F is doped into the TiO2 lattice in the form of interstitial F. The mesopore-forming and doping mechanisms are thoroughly discussed based on the bi-function of C[Formula: see text]TAB template. Mesoporous structure results in a high BET surface area of TiO2. High-concentration nitrogen species in anatase lattice and mesoporous structure remarkably increase the visible absorption of TiO2. As a result, the reaction rate constant of MB degradation catalyzed by N/F co-doped mesoporous TiO2 photocatalysts is about 7 times that by P25.

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Seelan, Sindhu, Katsuya Kato, and Yoshiyuki Yokogawa. "Macroporous Ceramics Coated with Mesoporous Layer for Enzyme Encapsulation." Key Engineering Materials 317-318 (August 2006): 717–22. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.717.

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Mesoporous silica with 5~10 nm pore size was coated over recycled ceramic, prepared from lake sludge, with pore size 100-200μm. The mesoporous silica coated ceramic was characterized by XRD, N2 sorption, SEM and TEM. The results clearly showed the formation of mesoporous coating on the macroporous ceramics. These ceramics with the mesoporous coating are specially suitable for stabilization of enzymes. The mesopore stabilized enzymes are recyclable catalysts and showed comparable performance with the free enzyme.

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Dilma Purnama Ubit, Yusmaniar Yusmaniar, and Erdawati Erdawati. "Adsorbsi Pewarna Direct Black 38 Menggunakan Komposit Silika Mesopori Dari Abu Sekam Padi/Karbon Aktif Dari Tempurung Kelapa." JRSKT - Jurnal Riset Sains dan Kimia Terapan 8, no. 1 (October 9, 2019): 1–9. http://dx.doi.org/10.21009/jrskt.081.01.

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Abstrak Pada penelitian ini adsorben komposit silika mesopori dan karbon aktif dibuat untuk mengadsorpsi zat warna direct black 38. Silika mesopori dibuat dari abu sekam padi dan karbon aktif dibuat dari tempurung kelapa. Silika direaksikan dengan NaOH menjadi larutan natrium silikat lalu direaksikan dengan PEG yang selanjutnya PEG diekstraksi secara solvotermal sehingga menghasilkan produk silika mesopori dengan luas permukaan dan pori yang lebih besar. Silika mesopori diproses menjadi komposit dengan karbon aktif yang telah diaktivasi sebelumnya dengan larutan ZnCl2. Kandungan dari komposit silika mesopori/karbon aktif ditunjukkan melalui hasil analisis SEM bahwa komposit hasil sintesis menunjukkan penyebaran karbon dan silika terlihat pada morfologi komposit. Hasil analisis EDX menunjukan komponen penyusun komposit yaitu 38,6% karbon; 46,8% oksigen dan 14,6% silika. Hasil penelitian menunjukan bahwa kondisi optimum yang diperlukan untuk adsorpsi direct black 38 dengan komposit silika mesopori/karbon aktif yaitu pH 2 dan waktu optimum 30 menit. Adsorpsi direct black 38 oleh komposit silika mesopori/karbon aktif mengikuti isoterm adsorpsi Langmuir. Oleh karena itu, adsorpsi yang terjadi membentuk lapisan monolayer dengan kapasitas adsorpsi 68,493 mg g-1 Kata kunci: abu sekam padi, adsorpsi, karbon aktif, komposit, PEG, silika mesopori Abstract In this research, mesopore silica/activated carbon composite adsorbent was formed for dye adsorption direct black 38. The mesopore silica was from rice husk ash and activated carbon was from coconut shell. This rice husk ash is processed into sodium silicate solution and the solution was hybrid with PEG. Then PEG was extracted with solvotermal method to produce a higher surface area of mesopore silica. The mesopore silica was processed into composite with activated carbon that has been activated by ZnCl2 solution. The mesopore silica/activated carbon composite was analysed by SEM and showed the distribution of carbon, silica and oxygen as composite morphology. The EDX analysis showed that the composite contains of 46.8% carbon; 3.6% oxygen and 14.6% silica. The results showed that the optimum condition required for the adsorption of direct black 38 dye with mesopore silica/activated carbon composite pH was 2 and the optimum contact time was 30 minutes. Adsorption of direct black 38 by mesopore silica/activated carbon composite followed Langmuir adsorption isotherm and formed a monolayer layer with adsorption capacity 68.493 mg g-1. Keywords: activated carbon, adsorption, composite, mesopore silica, PEG, rice husk ash Abstrak Pada penelitian ini adsorben komposit silika mesopori dan karbon aktif dibuat untuk mengadsorpsi zat warna direct black 38. Silika mesopori dibuat dari abu sekam padi dan karbon aktif dibuat dari tempurung kelapa. Silika direaksikan dengan NaOH menjadi larutan natrium silikat lalu direaksikan dengan PEG yang selanjutnya PEG diekstraksi secara solvotermal sehingga menghasilkan produk silika mesopori dengan luas permukaan dan pori yang lebih besar. Silika mesopori diproses menjadi komposit dengan karbon aktif yang telah diaktivasi sebelumnya dengan larutan ZnCl2. Kandungan dari komposit silika mesopori/karbon aktif ditunjukkan melalui hasil analisis SEM bahwa komposit hasil sintesis menunjukkan penyebaran karbon dan silika terlihat pada morfologi komposit. Hasil analisis EDX menunjukan komponen penyusun komposit yaitu 38,6% karbon; 46,8% oksigen dan 14,6% silika. Hasil penelitian menunjukan bahwa kondisi optimum yang diperlukan untuk adsorpsi direct black 38 dengan komposit silika mesopori/karbon aktif yaitu pH 2 dan waktu optimum 30 menit. Adsorpsi direct black 38 oleh komposit silika mesopori/karbon aktif mengikuti isoterm adsorpsi Langmuir. Oleh karena itu, adsorpsi yang terjadi membentuk lapisan monolayer dengan kapasitas adsorpsi 68,493 mg g-1 Kata kunci: abu sekam padi, adsorpsi, karbon aktif, komposit, PEG, silika mesopori Abstract In this research, mesopore silica/activated carbon composite adsorbent was formed for dye adsorption direct black 38. The mesopore silica was from rice husk ash and activated carbon was from coconut shell. This rice husk ash is processed into sodium silicate solution and the solution was hybrid with PEG. Then PEG was extracted with solvotermal method to produce a higher surface area of mesopore silica. The mesopore silica was processed into composite with activated carbon that has been activated by ZnCl2 solution. The mesopore silica/activated carbon composite was analysed by SEM and showed the distribution of carbon, silica and oxygen as composite morphology. The EDX analysis showed that the composite contains of 46.8% carbon; 3.6% oxygen and 14.6% silica. The results showed that the optimum condition required for the adsorption of direct black 38 dye with mesopore silica/activated carbon composite pH was 2 and the optimum contact time was 30 minutes. Adsorption of direct black 38 by mesopore silica/activated carbon composite followed Langmuir adsorption isotherm and formed a monolayer layer with adsorption capacity 68.493 mg g-1. Keywords: activated carbon, adsorption, composite, mesopore silica, PEG, rice husk ash

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SHON, JEONG KUK, SOO SUNG KONG, SUNG SOO KIM, MIN SUK KANG, JI MAN KIM, and BYUNG GUK SO. "SYNTHESIS OF MESOPOROUS IRON OXIDE NANOPARTICLES FROM MESOPOROUS SILICA TEMPLATE VIA NANO-REPLICATION." Functional Materials Letters 01, no. 02 (September 2008): 151–54. http://dx.doi.org/10.1142/s1793604708000277.

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Highly ordered mesoporous iron oxide (α- Fe 2 O 3) material has been successfully obtained from mesoporous silica template, KIT-6 (3-D Cubic Ia3d symmetry), through nano-replication method. The mesoporous α- Fe 2 O 3 material thus obtained exhibits well-defined mesopores (2.7 nm in diameter), high surface area (148 m2/g), high pore volume (0.47 cm3/g) and crystalline frameworks. The morphology of the mesoporous α- Fe 2 O 3 material is very uniform in spherical shape of which the average particle size is about 100 nm in diameter.

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Dibandjo, P., F. Chassagneux, L. Bois, C. Sigala, and P. Miele. "Condensation of borazinic precursors for mesoporous boron nitride synthesis by carbon nanocasting." Journal of Materials Research 22, no. 1 (January 2007): 26–34. http://dx.doi.org/10.1557/jmr.2007.0028.

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The influence of different borazinic precursors on mesoporous boron nitride synthesis by using a nanocasting process of a mesoporous CMK-3 carbon is presented. Two borazinic precursors, the tri(methylamino)borazine (MAB) and the tri(chloro)borazine (TCB), have been converted to boron nitride (BN) inside the mesopores of a CMK-3 carbon mesoporous template by using thermal or chemical polycondensation processes. Ordered mesoporous boron nitride with a specific surface area around 800 m2/g, a mesoporous volume around 0.6 cm3/g, and a pore-size distribution located at 6 nm in diameter was synthesized by thermal condensation of a molecular MAB precursor. In addition, chemical condensation of TCB led to a disordered mesoporous boron nitride.

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32

Zhang, Qian, Minying Wu, Yuanyuan Fang, Chao Deng, Hsin-Hui Shen, Yi Tang, and Yajun Wang. "Dendritic Mesoporous Silica Hollow Spheres for Nano-Bioreactor Application." Nanomaterials 12, no. 11 (June 6, 2022): 1940. http://dx.doi.org/10.3390/nano12111940.

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Mesoporous silica materials have attracted great research interest for various applications ranging from (bio)catalysis and sensing to drug delivery. It remains challenging to prepare hollow mesoporous silica nanoparticles (HMSN) with large center-radial mesopores that could provide a more efficient transport channel through the cell for guest molecules. Here, we propose a novel strategy for the preparation of HMSN with large dendritic mesopores to achieve higher enzyme loading capacity and more efficient bioreactors. The materials were prepared by combining barium sulfate nanoparticles (BaSO4 NP) as a hard template and the in situ-formed 3-aminophenol/formaldehyde resin as a porogen for directing the dendritic mesopores’ formation. HMSNs with different particle sizes, shell thicknesses, and pore structures have been prepared by choosing BaSO4 NP of various sizes and adjusting the amount of tetraethyl orthosilicate added in synthesis. The obtained HMSN-1.1 possesses a high pore volume (1.07 cm3 g−1), a large average pore size (10.9 nm), and dendritic mesopores that penetrated through the shell. The advantages of HMSNs are also demonstrated for enzyme (catalase) immobilization and subsequent use of catalase-loaded HMSNs as bioreactors for catalyzing the H2O2 degradation reaction. The hollow and dendritic mesoporous shell features of HMSNs provide abundant tunnels for molecular transport and more accessible surfaces for molecular adsorption, showing great promise in developing efficient nanoreactors and drug delivery vehicles.

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Li, Zhenghua, Heon Jong Jeong, Kumarsrinivasan Sivaranjani, Byung Jin Song, Su Bin Park, Donghao Li, Chul Wee Lee, Mingshi Jin, and Ji Man Kim. "Highly Ordered Mesoporous WO3 with Excellent Catalytic Performance and Reusability for Deep Oxidative Desulfurization." Nano 10, no. 05 (July 2015): 1550075. http://dx.doi.org/10.1142/s1793292015500757.

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Highly ordered mesoporous tungsten trioxide ( WO 3) with high surface area (75 m2/g) and well-defined mesopores were successfully prepared through a hard templating method using a mesoporous silica KIT-6 as a template and ( NH 4)6 H 2 W 12 O 40 ⋅ x H 2 O as a tungsten precursor. Oxidative desulfurization of a model oil with H 2 O 2 as the oxidant was carried out at 50°C under atmospheric pressure in order to analyze the catalytic activity. The desulfurization reactions were optimized by various kinds of reaction parameters such as H 2 O 2/ S molar ratio, reaction temperatures and series of sulfur-containing compounds [dibenzothiophene (DBT), benzothiophene (BT) and 4,6-dimethyl dibenzothiophene (4,6-DMBT)]. Excellent catalytic activity for the removal of the sulfur-containing compounds from the model oil was observed with mesoporous WO 3 catalyst, where the activity was maintained during 5 recycle tests without any regeneration process. The high catalytic activity and durability is mainly attributed to well-defined mesopores and high surface area of mesoporous WO 3 catalyst.

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Kim, Ju-Hwan, Hye-Min Lee, Sang-Chul Jung, Dong-Chul Chung, and Byung-Joo Kim. "Bamboo-Based Mesoporous Activated Carbon for High-Power-Density Electric Double-Layer Capacitors." Nanomaterials 11, no. 10 (October 17, 2021): 2750. http://dx.doi.org/10.3390/nano11102750.

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Demand for hybrid energy storage systems is growing, but electric double-layer capacitors (EDLCs) have insufficient output characteristics because of the microporous structure of the activated carbon electrode material. Commercially, activated carbon is prepared from coconut shells, which yield an activated carbon material (YP-50F) rich in micropores, whereas mesopores are desired in EDLCs. In this study, we prepared mesoporous activated carbon (PB-AC) using a readily available, environmentally friendly resource: bamboo. Crucially, modification using phosphoric acid and steam activation was carried out, which enabled the tuning of the crystal structure and the pore characteristics of the product. The structural characteristics and textural properties of the PB-AC were determined, and the specific surface area and mesopore volume ratio of the PB-AC product were 960–2700 m2/g and 7.5–44.5%, respectively. The high specific surface area and mesopore-rich nature originate from the phosphoric acid treatment. Finally, PB-AC was used as the electrode material in EDLCs, and the specific capacitance was found to be 86.7 F/g for the phosphoric-acid-treated sample steam activated at 900 °C for 60 min; this capacitance is 35% better than that of the commercial YP-50F (64.2 F/g), indicating that bamboo is a suitable material for the production of activated carbon.

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Li, Cuiling, Bo Jiang, Masataka Imura, Victor Malgras, and Yusuke Yamauchi. "Mesoporous Pt hollow cubes with controlled shell thicknesses and investigation of their electrocatalytic performance." Chem. Commun. 50, no. 97 (2014): 15337–40. http://dx.doi.org/10.1039/c4cc07071b.

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Liu, Zhijun, Jiaxi Ru, Shiqi Sun, Zhidong Teng, Hu Dong, Pin Song, Yunshang Yang, and Huichen Guo. "Uniform dendrimer-like mesoporous silica nanoparticles as a nano-adjuvant for foot-and-mouth disease virus-like particle vaccine." Journal of Materials Chemistry B 7, no. 21 (2019): 3446–54. http://dx.doi.org/10.1039/c8tb03315c.

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Yamaguchi, Syuhei, Yuito Ishida, Hitomu Koga, and Hidenori Yahiro. "Direct Hydroxylation of Benzene with Hydrogen Peroxide Using Fe Complexes Encapsulated into Mesoporous Y-Type Zeolite." Molecules 27, no. 20 (October 13, 2022): 6852. http://dx.doi.org/10.3390/molecules27206852.

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Mesoporous Y-type zeolite (MYZ) was prepared by an acid and base treatment of commercial Y-type zeolite (YZ). The mesopore volume of MYZ was six times higher than that of YZ. [Fe(terpy)2]2+ complexes encapsulated into MYZ and YZ with different Fe contents (Fe(X)L-MYZ and Fe(X)L-YZ; X is the amount of Fe) were prepared and characterized. The oxidation of benzene with H2O2 using Fe(X)L-MYZ and Fe(X)L-YZ catalysts was carried out; phenol was selectively produced with all Fe-containing zeolite catalysts. As a result, the oxidation activity of benzene increased with increasing iron complex content in the Fe(X)L-MYZ and Fe(X)L-YZ catalysts. The oxidation activity of benzene using Fe(X)L-MYZ catalyst was higher than that using Fe(X)L-YZ. Furthermore, adding mesopores increased the catalytic activity of the iron complex as the iron complex content increased.

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Peng, Li, Jianling Zhang, Shuliang Yang, Buxing Han, Xinxin Sang, Chengcheng Liu, and Guanying Yang. "Porosity control in mesoporous polymers using CO2-swollen block copolymer micelles as templates and their use as catalyst supports." Chem. Commun. 50, no. 80 (2014): 11957–60. http://dx.doi.org/10.1039/c4cc05138f.

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Zhang, Liyuan, Hui Huang, Yang Xia, Chu Liang, Wenkui Zhang, Jianmin Luo, Yongping Gan, Jun Zhang, Xinyong Tao, and Hong Jin Fan. "High-content of sulfur uniformly embedded in mesoporous carbon: a new electrodeposition synthesis and an outstanding lithium–sulfur battery cathode." Journal of Materials Chemistry A 5, no. 12 (2017): 5905–11. http://dx.doi.org/10.1039/c7ta00328e.

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Okada, Tomomi, and Masaru Miyayama. "Synthesis and Evaluation of Electrochemical Properties of Mesoporous Anatase Titania." Key Engineering Materials 301 (January 2006): 151–54. http://dx.doi.org/10.4028/www.scientific.net/kem.301.151.

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Lithium intercalation properties were investigated for mesoporous titania, prepared by hydrolysis of titanium tetrabutoxide followed by calcining at various temperatures. X-ray diffraction analysis showed that synthesized titania were anatase phase. The B.E.T. surface area of mesoporous titania decreased with increasing calcining temperature, but that of mesoporous titania calcined at 450°C was over 50 m2/g. Lithium intercalation capacities of mesoporous anatase increased with increasing calcining temperature up to 450°C. Mesoporous anatase titania calcined at 450°C showed a capacity of 118 mAh/g at a current density of 1 A/g. The lithium intercalation properties depended on crystallinity, remaining water content and mesopore size.

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Noonan, Owen, Yang Liu, Xiaodan Huang, and Chengzhong Yu. "Layered graphene/mesoporous carbon heterostructures with improved mesopore accessibility for high performance capacitive deionization." Journal of Materials Chemistry A 6, no. 29 (2018): 14272–80. http://dx.doi.org/10.1039/c8ta03114b.

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Fu, Xiaoqin, Xiaoli Sheng, Yuming Zhou, Zhiwei Fu, Shuo Zhao, Xiaohai Bu, and Chao Zhang. "Design of micro–mesoporous zeolite catalysts for alkylation." RSC Advances 6, no. 56 (2016): 50630–39. http://dx.doi.org/10.1039/c6ra08099e.

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Srinivasu, Pavuluri. "Investigation on the Textural Properties Tuning of Ordered Mesoporous Carbons with an Excellent Electrochemical Performance." Advances in OptoElectronics 2011 (October 9, 2011): 1–4. http://dx.doi.org/10.1155/2011/615164.

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A synthetic method to produce mesoporous carbons with tunable textural properties and ordered pore structure has been developed by changing sucrose to water ratio. The specific surface area of 1437 m2/g with pore volume of 1.4 cm3/g and porosity of mesopores centered at around 4.4 nm are achieved by tuning the concentration of filling amount into mesoporous silica. The mesoporous carbon exhibits hexagonal rod-like morphology (a diameter of ~1.2 m), which confirms that the replication process is highly successful. It is demonstrated that the prepared mesoporous carbon exhibits much higher current density and superior performance as compared to conventional activated charcoal.

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Chi, Bo, Li Zhao, Jian Li, Jian Pu, Yao Chen, Congcong Wu, and Tetsuro Jin. "TiO2 Mesoporous Thick Films with Large-Pore Structure for Dye-Sensitized Solar Cell." Journal of Nanoscience and Nanotechnology 8, no. 8 (August 1, 2008): 3877–82. http://dx.doi.org/10.1166/jnn.2008.197.

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Large-pore mesoporous titania films with thickness up to 3.5 μm were prepared by dip-coating method using block copolymer Pluronic P123 as structure directing agent. The highly transparent multilayer mesoporous film shows a large pore size of 8.9 nm with surface area of 129.4 m2 · g−1. The mesopore structure with continuous crystalline framework was maintained after being calcined at 400 °C. Dye-sensitized solar cell (DSSC) based on the large-pore mesoporous film exhibited an enhanced light-to-electricity conversion efficiency of 6.01%, due to the thick large-pore mesoporous film with continuous crystalline framework structure.

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Kim, Hyung-Ju, Hee-Chul Yang, Dong-Yong Chung, In-Hwan Yang, Yun Jung Choi, and Jei-kwon Moon. "Functionalized Mesoporous Silica Membranes for CO2Separation Applications." Journal of Chemistry 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/202867.

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Mesoporous silica molecular sieves are emerging candidates for a number of potential applications involving adsorption and molecular transport due to their large surface areas, high pore volumes, and tunable pore sizes. Recently, several research groups have investigated the potential of functionalized mesoporous silica molecular sieves as advanced materials in separation devices, such as membranes. In particular, mesoporous silica with a two- or three-dimensional pore structure is one of the most promising types of molecular sieve materials for gas separation membranes. However, several important challenges must first be addressed regarding the successful fabrication of mesoporous silica membranes. First, a novel, high throughput process for the fabrication of continuous and defect-free mesoporous silica membranes is required. Second, functionalization of mesopores on membranes is desirable in order to impart selective properties. Finally, the separation characteristics and performance of functionalized mesoporous silica membranes must be further investigated. Herein, the synthesis, characterization, and applications of mesoporous silica membranes and functionalized mesoporous silica membranes are reviewed with a focus on CO2separation.

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Braun, Katharina, Alexander Pochert, Marlena Gerber, Heinz Fabian Raber, and Mika Lindén. "Influence of mesopore size and peptide aggregation on the adsorption and release of a model antimicrobial peptide onto/from mesoporous silica nanoparticles in vitro." Molecular Systems Design & Engineering 2, no. 4 (2017): 393–400. http://dx.doi.org/10.1039/c7me00059f.

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Wang, Kaixi, Jianan Zhang, Wei Xia, Ruqiang Zou, Junhui Guo, Zhongmin Gao, Wenfu Yan, Shaojun Guo, and Qun Xu. "A dual templating route to three-dimensionally ordered mesoporous carbon nanonetworks: tuning the mesopore type for electrochemical performance optimization." Journal of Materials Chemistry A 3, no. 37 (2015): 18867–73. http://dx.doi.org/10.1039/c5ta04632g.

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Lv, Li Li, Wen Hao Geng, Chen Wang, Zhuo Ying Xie, Yuan Jin Zhao, Yuan Guan, Xu Duo Bai, and Li Guo Sun. "Pereparation of Hollow Silica Core/Mesoporous Silica Shell Monodisperse Uniform Spheres." Advanced Materials Research 668 (March 2013): 207–10. http://dx.doi.org/10.4028/www.scientific.net/amr.668.207.

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Hollow silica core/mesoporous silica shell monodisperse uniform spheres were synthesized via a dual-templating method. Speciﬁcally designed polystyrene (PS) coated by silica as the core template, while cetyltrimethylammonium bromide served as a co-template to structure the mesopore formation during tetraethoxysilane (TEOS) hydrolysis/condensation. The hollow core and mesoporous structure were formed by calcination which acts as the removable templates. Transmission electron microscopy (TEM) and scanning electronmicroscopy (SEM) investigations reveal that the morphology and hierarchical structure of the calcined mesoporous silica spheres.

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Ryoo, Ryong, Chang Hyun Ko, Michal Kruk, Valentyn Antochshuk, and Mietek Jaroniec. "Block-Copolymer-Templated Ordered Mesoporous Silica: Array of Uniform Mesopores or Mesopore−Micropore Network?" Journal of Physical Chemistry B 104, no. 48 (December 2000): 11465–71. http://dx.doi.org/10.1021/jp002597a.

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50

Chen, Yang, Fuzhi Huang, Wanchun Xiang, Dehong Chen, Lu Cao, Leone Spiccia, Rachel A. Caruso, and Yi-Bing Cheng. "Effect of TiO2 microbead pore size on the performance of DSSCs with a cobalt based electrolyte." Nanoscale 6, no. 22 (2014): 13787–94. http://dx.doi.org/10.1039/c4nr04436c.

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Journal articles on the topic 'Mesoporou'

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