Journal articles: 'Mesoporous'

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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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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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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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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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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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Bo, Wenbei, Hongtao Zhang, Guocheng Yin, Liangzhu Zhang, and Jieqiong Qin. "Recent Advances in Graphene-Based Mesoporous Nanosheets for Supercapacitors." C 9, no. 4 (September 27, 2023): 91. http://dx.doi.org/10.3390/c9040091.

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Among typical energy storage devices, supercapacitors play a predominant role in industry and our life owing to their rapid charge/discharge rate, superior lifespan, high power density, low cost, and outstanding safety. However, their low energy density has severely hindered their further development. For active electrode materials, graphene-based mesoporous nanosheets (GMNs) can combine the advantages from graphene and mesoporous materials, which can be applied to significantly enhance the energy density of supercapacitors. Here, we review the recent advances in GMNs for supercapacitors, focusing on in-plane mesoporous graphene and sandwich-like graphene-based heterostructures. Firstly, the synthesis of in-plane mesoporous graphene with ordered and disordered mesopores for supercapacitors is introduced. Secondly, sandwich-like graphene-based heterostructures are classified into mesoporous carbon/graphene, mesoporous heteroatom-doped carbon/graphene, mesoporous conducting polymer/graphene, and mesoporous metal oxide/graphene, and their applications in supercapacitors are discussed in detail. Finally, the challenges and opportunities of GMNs for high-performance supercapacitors are proposed.

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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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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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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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Yokogawa, Yoshiyuki, Sindhu Seelan, and Yin Zhang. "Hyperstructured Hydroxyapatite Ceramics as a Carrier for Cell and Protein." Key Engineering Materials 309-311 (May 2006): 939–42. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.939.

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The preparation of hyperstructured hydroxyapatite (HAp) ceramics is reported. Mesoporous silica with nano size pore was coated on the bi-modal type porous HAp ceramics with pore size 100-200 µm and 1-2 µm. The mesoporous silica coating was done using two different procedures and the ceramics were characterized by XRD, N2 Sorption, SEM/EDX, and TEM. The results clearly showed the formation of mesoporous coating on the large pores of parent HAp ceramics. SEM images reveal that the mesoporous coatings consists of almost spherical particles with relatively uniform sizes of ~1 µm. Protein adsorption and release behavior on these mesoporous coated HAp ceramics was evaluated using UV-VIS spectrometry. The large pores are suitable for cell immobilization, and the mesopores several nm in size were found to enhance protein encapsulation ability.

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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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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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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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Prokešová, Pavla, Nikolay Petkov, Jiří Čejka, Svetlana Mintova, and Thomas Bein. "Micro/Mesoporous Composites Based on Colloidal Zeolite Grown in Mesoporous Matrix." Collection of Czechoslovak Chemical Communications 70, no. 11 (2005): 1829–47. http://dx.doi.org/10.1135/cccc20051829.

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Composite materials containing micro- and mesopores are prepared under instantaneous hydrothermal treatment of initial solutions generally used for zeolite Beta and precursor solutions for mesoporous Al-MCM-41 material. The resulting composites are compared with pure, highly crystalline colloidal microporous Beta zeolite and hexagonally ordered mesostructured samples. The porosity and morphological features of the composite materials are influenced by the conditions of hydrothermal synthesis of the initial colloidal solutions used for the preparation of Beta seeds, as well as by the conditions of the synchronized crystallization of the final composites. The embedding of Beta seeds in the mesoporous silica matrix is possible via immediate heating of mesoporous precursor solutions with Beta seeds primarily formed. The composite materials contain either microcrystalline Beta nanodomains with sizes of about 5-10 nm surrounded by mesoporous material or defined Beta nanocrystals (20-40 nm), and at the same time connected with mesostructured material. The presence of highly crosslinked silicate framework walls and tetrahedrally coordinated aluminum in the composite material are confirmed by solid-state 29Si and 27Al MAS NMR spectroscopy. The concentration of Brønsted acid sites in the micro/mesoporous composites is increased substantially in comparison with pure mesoporous Al-MCM-41 material proven by FTIR acetonitrile-d3 adsorption study.

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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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Sun, Qiang, Long Liu, Yi-Ding Li, Zeng-Rong Wang, and Xue Zhang. "Engineering Iron-Based Nanoparticles Spatially Dispersed on Mesoporous Carbon and Its Catalytic Activity for the Direct Oxidization of Benzene to Phenol." Nano 13, no. 08 (August 2018): 1850094. http://dx.doi.org/10.1142/s1793292018500947.

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We report engineered iron-based nanoparticles supported on cagelike mesoporous carbon that leaves its most mesopores empty to retain an open pore network and are expected to be efficient catalyst with fast molecular diffusion/transportation. The nano-scale iron-based particle inlayed in mesoporous carbon catalyst was obtained via the introduction of N atoms as an anchor. Results of X-ray diffraction, N2 sorption and transmission electron microscopy showed that the cagelike mesoporous structure of the carbon matrix was retained during catalyst preparation and iron-based nanoparticles were spatially dispersed on the mesoporous carbon. Importantly, it was found that the obtained iron-based nanoparticles inlayed into mesoporous carbon with a low Fe loading of 1.26[Formula: see text]wt.% was an appropriate catalyst for the benzene hydroxylation to phenol using H2O2 as the oxidant. At a low temperature of 30∘C, 19.4% conversion to benzene and 14.6% phenol yield were obtained; in addition, the catalyst could be recycled at least four times.

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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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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, 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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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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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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Yasufuku, Daichi, Kazunari Sasaki, and Akari Hayashi. "Development of MEAs Using Mesoporous Carbon Fibers as Cathode Carbon Supports." ECS Transactions 112, no. 4 (September 29, 2023): 405–16. http://dx.doi.org/10.1149/11204.0405ecst.

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Mesoporous carbon fibers were synthesized and ball-milled into fine carbon particles to use as cathode carbon support. A critical issue of high ohmic overvoltage, previously found in mesoporous carbon related supports, was successfully reduced. Reducing carbon particle size was realized to be important in order to lower interparticle resistance and further to lower ohmic resistance. When cathodes were successfully prepared, low concentration overvoltage was found to a beneficial point of using mesoporous carbon based supports. Resulting low concentration overvoltage could not be explained by the difference in macro-porous structure of the cathode. Therefore, mesopores are expected to play an important role of the mass transfer, even though the exact mechanism is still under the study.

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E. Sangok, Faustina, Sabrina M. Yahaya, Izza Taib Nurul, Siti Zaleha Sa'ad, and Nor Fazila Rasaruddin. "Comparison Study of Amino-Functionalized and Mercaptopropyl-Functionalized Mesoporous Silica MCM-41." Advanced Materials Research 550-553 (July 2012): 1603–6. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.1603.

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The ability to decorate silicate surface with different organoalkoxysilanes creates powerful new capabilities for catalyst, adsorbents and chemical separation. Mesopororus silica, MCM-41 was modified by grafting of amino and mercaptopropyl functional group. The structures of these materials were characterized by using Fourier Transform Infrared Spectroscopy (FT-IR), and X-Ray diffraction (XRD). The samples were found to exhibit structural properties similar to those reported earlier. Significant functional groups of the modified mesoporous silicates were found in the spectrum of FT-IR. Standard structure of mesoporous silicates were found to be preserved at planar [100] of XRD difractogram of mesoporous silicates. Adsorption of Cu (II) ions were done under different temperatures, initial concentrations and pH. Adsorption process also was determined from kinetic point of view and was found to be better fitted to pseudo second order of kinetic model.

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Gudiño-Rivera, Javier, Francisco J. Medellín-Rodríguez, Carlos Ávila-Orta, Alma G. Palestino-Escobedo, and Saúl Sánchez-Valdés. "Structure/Property Relationships of Poly(L-lactic Acid)/Mesoporous Silica Nanocomposites." Journal of Polymers 2013 (December 24, 2013): 1–10. http://dx.doi.org/10.1155/2013/162603.

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Biodegradable poly(L-lactic acid) (PLLA)/mesoporous silica nanocomposites were prepared by grafting L-lactic acid oligomer onto silanol groups at the surface of mesoporous silica (SBA-15). The infrared results showed that the lactic acid oligomer was grafted onto the mesoporous silica. Surface characterization of mesoporous silica proved that the grafted oligomer blocked the entry of nitrogen into the mesopores. Thermal analysis measurements showed evidence that, once mixed with PLLA, SBA-15 not only nucleated the PLLA but also increased the total amount of crystallinity. Neat PLLA and its nanocomposites crystallized in the same crystal habit and, as expected, PLLA had a defined periodicity compared with the nanocomposites. This was because the grafted macromolecules on silica tended to cover the lamellar crystalline order. The g-SBA-15 nanoparticles improved the tensile moduli, increasing also the tensile strength of the resultant nanocomposites. Overall, the silica concentration tended to form a brittle material.

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Chen, Ai Min, Pei Gu, and Jun Hu. "A New Mesoporous Magnesium Borate Microsphere Synthesized Using Sodium Dodecyl Sulfate as Template ." Advanced Materials Research 486 (March 2012): 260–64. http://dx.doi.org/10.4028/www.scientific.net/amr.486.260.

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In this paper, we report a simple strategy for fabricating mesoporous magnesium borate (2MgO·B2O3) microspheres. We employed sodium dodecyl sulfate (SDS) in one system, as a template for the controlled growth of mesoporous 2MgO·B2O3microspheres. The products were characterized by XRD, SEM, TEM, EDS, N2sorption and FT-IR. SEM and TEM observations indicate magnesium borate products are composed of a large number of hollow microspheres, with diameters of 1.0~1.5 μm, which are in fact built from fibers with lengths of 100~150 nm. The N2sorption results show that the products have meso-structures. The average pore diameter is 27 nm. The BET surface area is about 53.03 m2/g, and the pore volume is 0.37 m3/g. It was found that SDS plays a key role for the formation of mesoporous structure. A possible mechanism was proposed to interpret the formation of the mesoporous structure. The mesopores will endow the hierarchical microspheres with novel application potentials.

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Zha, Zhenlong, Wenjun Zhu, Feng Chen, Junchao Qian, Xiao-Qin Liu, Lin-Bing Sun, Zhengying Wu, and Zhigang Chen. "Facile Synthesis of Co3O4 Nanoparticle-Functionalized Mesoporous SiO2 for Catalytic Degradation of Methylene Blue from Aqueous Solutions." Catalysts 9, no. 10 (September 27, 2019): 809. http://dx.doi.org/10.3390/catal9100809.

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In this study, a series of Co3O4 nanoparticle-functionalized mesoporous SiO2 (Co–SiO2) were successfully synthesized via a spontaneous infiltration route. Co species were firstly infiltrated into the confined spaces between the surfactant and silica walls, with the assistance of grinding CoCl3·6H2O and the as-prepared mesoporous SiO2. Then, Co3O4 nanoparticles (NPs) were formed and grown in the limited space of the mesopores, after calcination. Structures, morphologies, and compositions of the materials were characterized by X-ray diffraction, transmission electron microscopy, energy dispersion spectrum, N2 adsorption, and Fourier transform infrared spectra. Results showed that the high content of Co (rCo:Si = 0.17) can be efficiently dispersed into the mesoporous SiO2 as forms of Co3O4 NPs, and the structural ordering of the mesoporous SiO2 was well-preserved at the same time. The Co3O4 NP functionalized mesoporous SiO2 materials were used as Fenton-like catalysts for removing methylene blue (MB) from aqueous solutions. The catalyst prepared at rCo:Si = 0.17 could completely remove the high-concentration of MB (120 mg·L−1), and also showed an excellent performance with a removal capacity of 138 mg·g−1 to 180 mg·L−1 of MB. Catalytic mechanisms were further revealed, based on the degradation results.

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Cheng, Dong, Jing Qin, Youyou Feng, and Jing Wei. "Synthesis of Mesoporous CuO Hollow Sphere Nanozyme for Paper-Based Hydrogen Peroxide Sensor." Biosensors 11, no. 8 (July 30, 2021): 258. http://dx.doi.org/10.3390/bios11080258.

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Point-of-care monitoring of hydrogen peroxide is important due to its wide usage in biomedicine, the household and industry. Herein, a paper sensor is developed for sensitive, visual and selective detection of H2O2 using a mesoporous metal oxide hollow sphere as a nanozyme. The mesoporous CuO hollow sphere is synthesized by direct decomposition of copper–polyphenol colloidal spheres. The obtained mesoporous CuO hollow sphere shows a large specific surface area (58.77 m2/g), pore volume (0.56 cm3/g), accessible mesopores (5.8 nm), a hollow structure and a uniform diameter (~100 nm). Furthermore, they are proven to show excellent peroxidase-like activities with Km and Vmax values of 120 mM and 1.396 × 10−5 M·s−1, respectively. Such mesoporous CuO hollow spheres are then loaded on the low-cost and disposable filter paper test strip. The obtained paper sensor can be effectively used for detection of H2O2 in the range of 2.4–150 μM. This work provides a new kind of paper sensor fabricated from a mesoporous metal oxide hollow sphere nanozyme. These sensors could be potentially used in bioanalysis, food security and environmental protection.

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Zhao, Yu Feng, and Jan Ma. "Mesoporous Bioactive Glasses: Synthesis, Characterization and In Vitro Bioactivity." Journal of Biomimetics, Biomaterials and Tissue Engineering 1 (July 2008): 37–47. http://dx.doi.org/10.4028/www.scientific.net/jbbte.1.37.

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In this work, two systems of mesoporous bioactive glasses (MBGs) with a series of different SiO2:CaO:P2O5 ratios were derived via a sol-gel method involving the usage of block copolymers Pluronic F127 and P123 as templates, respectively. A two-dimensional hexagonal (P6mm) mesoporous structure was obtained in the two systems with a SiO2:CaO:P2O5 ratio of 80:16:4. With the decrease of the SiO2 content, the porous structure of MBGs became less regular, and the BET surface area and the pore volume were also decreased. Mesoporous bioactive glasses from the template F127 displayed a higher degree of bioactivity than those from the template P123, as a result of the existence of more defects on the walls of the mesopores.

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Wang, Hongjuan, Xuefei Liu, Olena Saliy, Wei Hu, and Jingui Wang. "Robust Amino-Functionalized Mesoporous Silica Hollow Spheres Templated by CO2 Bubbles." Molecules 27, no. 1 (December 22, 2021): 53. http://dx.doi.org/10.3390/molecules27010053.

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Hollow-structured mesoporous silica has wide applications in catalysis and drug delivery due to its high surface area, large hollow space, and short diffusion mesochannels. However, the synthesis of hollow structures usually requires sacrificial templates, leading to increased production costs and environmental problems. Here, for the first time, amino-functionalized mesoporous silica hollow spheres were synthesized by using CO2 gaseous bubbles as templates. The assembly of anionic surfactants, co-structure directing agents, and inorganic silica precursors around CO2 bubbles formed the mesoporous silica shells. The hollow silica spheres, 200–400 nm in size with 20–30 nm spherical shell thickness, had abundant amine groups on the surface of the mesopores, indicating excellent applications for CO2 capture, Knoevenagel condensation reaction, and the controlled release of Drugs.

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BOUHALI, Hasna, Nabila CHALAL, Hadj HAMAIZI, and Abdelkader BENGUEDDACH. "Synthesis and CO2 sorption of silica particles, kinetics and thermodynamics." JOURNAL OF ADVANCES IN CHEMISTRY 10, no. 5 (June 3, 2014): 2711–19. http://dx.doi.org/10.24297/jac.v10i5.888.

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Spherical ordered mesoporous silica particles with radially oriented mesopores were successfully prepared by using non-ionic amphiphilic di-block co-polymers CnH2n+1-(EO)x-OH as template and tetraorthosilicate (TEOS) as silica precursor. The synthesized mesoporous silica materials were characterized by XRD, N2 adsorption-desorption and SEM techniques. CO2 adsorption at 0 °C was evaluated by a volumetric method, and the CO2 sorption behavior was described by applying both Langmuir and Freundlich equations. Results indicate a high adsorption capacity of CO2 (5-9 mmol/g), depending essentially on the porous texture of the materials. An adsorption kinetic model was proposed to describe the adsorption of CO2 over template-free mesoporous siliceous materials. A good agreement with experimental data was found.

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Tatsuda, Narihito, Yasutomo Goto, Norihiko Setoyama, and Yoshiaki Fukushima. "Adsorption of Carbon Dioxide on Mesoporous Silicas near the Critical Temperature." Adsorption Science & Technology 23, no. 9 (November 2005): 763–76. http://dx.doi.org/10.1260/026361705776316569.

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The adsorption of carbon dioxide on mesoporous silicas was studied near the critical temperature (Tc) of CO2, i.e. 304.2 K. The critical temperature in the mesopores at which the first-order phase transition (capillary condensation) was observed (Tcp) was estimated from the inverse slope of the adsorption isotherms and the behaviour of the adsorption isotherms per unit surface area. The values of Tcp for CO2 in mesopores whose radii, rp, were 3.02 and 2.14 nm were higher than those estimated using a slab model in which the adsorbing parts of layer were clearly separated from the non-adsorbing regions. The differential heat of adsorption decreased with increasing pore size of the mesoporous adsorbent. This result also suggested a deviation from the slab model.

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Alberti, Sebastián, Esteban Piccinini, Pedro G. Ramirez, Gabriel S. Longo, Marcelo Ceolín, and Omar Azzaroni. "Mesoporous thin films on graphene FETs: nanofiltered, amplified and extended field-effect sensing." Nanoscale 13, no. 45 (2021): 19098–108. http://dx.doi.org/10.1039/d1nr03704h.

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Mesoporous thin films on graphene transistors display unique nanofiltered, amplified and extended field-effect sensing. Synergy between the molecular confinement inside mesopores and the graphene interfacial transduction allows this outcome.

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Han, Zhi Dong, Feng Xu, Li Jiang, Zheng Quan Jiang, and Peng Wang. "Characterization of MCM-41 Mesoporous Silica Supported 2-Carboxyethyl Phenyl Phosphinic Acid." Key Engineering Materials 591 (November 2013): 134–37. http://dx.doi.org/10.4028/www.scientific.net/kem.591.134.

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MCM-41 mesoporous silica was prepared by hydrothermal method. 2-carboxyethyl phenyl phosphinic acid (CEPPA) was loaded on MCM-41 by solution method. The structure of MCM-41 and its supported CEPPA was studied by X-ray diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscopy (SEM) coupled with energy dispersive spectrometer (EDS). The results revealed that CEPPA was successfully loaded on MCM-41 with Si/P molar ratio of about 20:1. The XRD spectrum of MCM-41 supported CEPPA was different from MCM-41, indicating the structure of MCM-41 was changed after loading of CEPPA. CEPPA molecule moved into the mesoporous structure and filled in the mesopores, leading to the disappearance of characteristic diffraction peaks of MCM-41. The interaction between hydroxyl group of CEPPA and silanol of MCM-41 made it stable for CEPPA to be in the mesopores and on the surface of MCM-41. MCM-41 supported CEPPA also showed the similar mesoporous structure with long-range order to MCM-41 when observed by TEM. SEM provided further evidences of the similar particle size and different morphology.

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Tan, Li, Xiaoyu Guo, Xinhua Gao, and Noritatsu Tsubaki. "Designing a Mesoporous Zeolite Catalyst for Products Optimizing in n-Decane Hydrocraking." Catalysts 9, no. 9 (September 12, 2019): 766. http://dx.doi.org/10.3390/catal9090766.

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Mesoporous ZSM-5 zeolite is developed to enhance the catalytic performance in a hydrocracking reaction. The generated mesopores and mesoporous channels in the new catalyst supply more opportunities for reactant accessing the active sites according to the better mass transfer and diffusion. Meanwhile, the acidity of the mesoporous catalyst is also weakened because of the removal of Si and Al species from its MFI structure, which makes the products distribution drift to more valued chemicals such as olefins. In the modified mesoporous ZSM-5 zeolites via different metallic promoters, the olefins’ selectivity increases as the alkalinity of the catalyst increases. The reason for this is that the formed olefins will be further hydrogenated into corresponding alkanes immediately over the extremely acidic zeolite catalyst. Hence, the moderate alkalinity will limit this process, while at the same time the remaining olefins products will too. Furthermore, the Pd-based mesoporous ZSM-5 zeolite shows an excellent n-decane conversion and high propane selectivity due to the occurrence of hydrogen spillover via the Pd promoter. The phenomenon of hydrogen spillover supplies more chemisorbed sites of hydrogen atoms for hydrocracking and hydrogenating in this reaction. In short, this study explores the important effect factors in n-decane hydrocracking reaction activity and products distribution. It also shows a potential for the further industrial application of petroleum-derived fuel hydrocracking according to the optimized products distribution under metallic promoted mesoporous zeolite.

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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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Juan, Joon Ching, Yarmo Mohd Ambar, and Jing Chang Zhang. "Tungstophosphoric Acid Entrapped on Mesoporous Silica via Sol Gel Technique." Advanced Materials Research 11-12 (February 2006): 69–72. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.69.

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The heterogeneous 12-tungstophosphoric acid (HPW) catalyst is becoming important in industrial processes for example in esterification reaction. A novel solid acid catalyst of HPW entrapped on mesoporous silica was synthesized by sol gel technique. Neutral template dodecylamine was introduced to obtain mesopores structure catalyst. The physical and chemical properties of the catalyst were characterized by XRD, nitrogen sorption and FTIR. In conclusion, this new type of mesoporous solid acid catalyst is a very promising heterogeneous acid catalyst for esterification reaction involving bulky molecules such as fatty acid.

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40

Ghanem, M. A., and I. S. El-Hallag. "Electrodeposition and Characterization of Mesoporous Nanostructured Cobalt Films using Brij78 Templated." Journal of New Materials for Electrochemical Systems 18, no. 3 (September 30, 2015): 165–68. http://dx.doi.org/10.14447/jnmes.v18i3.364.

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In this manuscript the preparation of highly ordered mesoporous cobalt films containing close packed arrays of spherical holes of uniform size was demonstrated by electrochemical deposition using the hexagonal liquid crystal template (H1-e Co). The template used was Brij®78 surfactant. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), voltammetric methods, and low angle X-ray diffraction (XRD) were used to characterize the electrodeposited mesopores films. Cyclic voltammetry (CV) technique are used to show the mesoporous thin films are promising to be used as electrode materials of high - performance super capacitors.

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Saikia, Diganta, Ya-Yang Huang, Cheng-En Wu, and Hsien-Ming Kao. "Size dependence of silver nanoparticles in carboxylic acid functionalized mesoporous silica SBA-15 for catalytic reduction of 4-nitrophenol." RSC Advances 6, no. 42 (2016): 35167–76. http://dx.doi.org/10.1039/c6ra01592a.

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Hou, Shushan, Xiaoju Li, Hongli Wang, Minggang Wang, Ying Zhang, Yue Chi, and Zhankui Zhao. "Synthesis of core–shell structured magnetic mesoporous silica microspheres with accessible carboxyl functionalized surfaces and radially oriented large mesopores as adsorbents for the removal of heavy metal ions." RSC Advances 7, no. 82 (2017): 51993–2000. http://dx.doi.org/10.1039/c7ra08937f.

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Core–shell structured mesoporous silica with accessible carboxyl functionalized surfaces and radial oriented large mesopores was fabricated as a recyclable adsorbent for the adsorption of Cd(ii), Cu(ii), and Pb(ii).

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Xiao, Ze Wen, Gang Zhang, and Guan Jun Qiao. "Facile Synthesis of Hierarchically Macro/Mesoporous Carbons by Polymerization-Induced Phase Separation Combined with Starch Template." Key Engineering Materials 512-515 (June 2012): 1641–46. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1641.

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In this work, a facile approach combining polymerization-induced phase separation and starch-templating is presented to synthesize hierarchically macro/mesoporous carbons. The obtained porous carbons have bimodal macropores with pore diameters of 10~60 μm and 3~5 μm and 3D interconnected mesopores with pore diameters of 5~40 nm. The large macropores and the small macropores are obtained by the thermal decomposition and the closely stacking of starch particles, respectively. The 3D interconnected mesopores are developed through polymerization-induced phase separation between ethylene glycol and phenolic resin via spinodal decomposition mechanism. These as-prepared hierarchically macro/mesoporous carbons may have great potential for applications as electrodes materials for batteries, fuel cells, and supercapacitors due to their facile synthesis, unique hierarchical porous structure, and large BET surface areas (~ 610 m2/g).

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Wang, Wang, Yucheng Liu, Jun Li, Jin Luo, Lei Fu, and Shengli Chen. "NiFe LDH nanodots anchored on 3D macro/mesoporous carbon as a high-performance ORR/OER bifunctional electrocatalyst." Journal of Materials Chemistry A 6, no. 29 (2018): 14299–306. http://dx.doi.org/10.1039/c8ta05295f.

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Carbon defects tune the formation of NiFe LDH nanodots confined in the mesopores of a macro–mesoporous carbon substrate, forming a hybrid electrocatalyst with excellent bifunctional performance for oxygen evolution and reduction reactions.

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Geng, Shu Ya, Li Min Dong, Chen Wang, and Tong Xiang Liang. "Surface Functionalization of Ordered Mesoporous Carbon by Immobilization of Diamine for Cobalt-Ion Adsorption." Key Engineering Materials 602-603 (March 2014): 300–303. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.300.

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Highly ordered mesoporous carbon (CMK-3) was fabricated for the adsorption of cobalt from aqueous solutions. With the high surface area of1112.7m2/g and pore size of 17.2 nm, its abundant mesopores were benefit for providing channels for liquid propagate. In order to improve the adsorption properties,CMK-3 was modified by hydroxylation and amination. Fourier transform infrared (FTIR) spectroscopy can be seen that the amino group was successfully grafted onto the CMK-3 with highly ordered mesoporous structure. The functionalized ordered mesoporous carbon (CMK-3-EDA) ,CMK-3 and CMK-3-OX were used as absents for the adsorption of Co (II) from aqueous solution. The results showed that CMK-3-EDA were more twice effective in adsorption of Co (II) compared to CMK-3, which indicated that CMK-3-EDA had great potential for the adsorption of Co (II).

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Tang, Bo, Weili Dai, Xiaoming Sun, Guangjun Wu, Naijia Guan, Michael Hunger, and Landong Li. "Mesoporous Zr-Beta zeolites prepared by a post-synthetic strategy as a robust Lewis acid catalyst for the ring-opening aminolysis of epoxides." Green Chemistry 17, no. 3 (2015): 1744–55. http://dx.doi.org/10.1039/c4gc02116a.

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Mesoporous Zr-Beta exhibits a remarkable catalytic activity and regio-selectivity to β-amino alcohols in epoxide aminolysis. Intra-crystalline mesopores greatly promote the reaction through enhanced mass transfer and suppress the catalytic deactivation.

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Ivanova, I. I., A. S. Kuznetsov, V. V. Yuschenko, and E. E. Knyazeva. "Design of composite micro/mesoporous molecular sieve catalysts." Pure and Applied Chemistry 76, no. 9 (September 30, 2004): 1647–57. http://dx.doi.org/10.1351/pac200476091647.

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Two series of composite micro/mesoporous materials with different contributions of micro- and mesoporosity were prepared by dealumination and recrystallization of mordenite zeolite. The materials were characterized by X-ray diffraction, infrared spectroscopy, 27Al magic angle spinning (MAS) NMR, nitrogen adsorption–desorption, and temperature-programmed desorption of ammonia (TPD NH3). Catalytic properties were studied in transalkylation of biphenyl with diisopropylbenzene. Both types of composite materials showed remarkably high activity, stability, and selectivity toward formation of di-isopropylbiphenyls with respect to both pure microporous and mesoporous materials. The effect is due to high zeolitic acidity combined with improved accessibility of active sites and transport of bulky molecules provided by mesopores.

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He, Qianjun, Chaohe Xu, Jianqiang Luo, Wei Wu, and Jianlin Shi. "A novel mesoporous carbon@silicon–silica nanostructure for high-performance Li-ion battery anodes." Chem. Commun. 50, no. 90 (2014): 13944–47. http://dx.doi.org/10.1039/c4cc03545c.

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A novel hierarchical nanostructure with graphite-like carbon and small Si nanocrystals, respectively, encapsulated in the mesopores and embedded in a silica framework of mesoporous silica nanoparticles is constructed for high-performance Li-ion batteries.

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Ikai, Masamichi, Yoshifumi Maegawa, Yasutomo Goto, Takao Tani, and Shinji Inagaki. "Synthesis of visible-light-absorptive and hole-transporting periodic mesoporous organosilica thin films for organic solar cells." J. Mater. Chem. A 2, no. 30 (2014): 11857–65. http://dx.doi.org/10.1039/c4ta01136h.

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Mesoporous films containing 4,7-dithienyl-2,1,3-benzothiadiazole units in the frameworks were synthesized and demonstrated to function as a p-type layer for organic solar cells by filling an n-type PCBM in the mesopores.

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Hernando Abad, Eduardo Hernando, Frédéric Bouyer, Laroussi Chaabane, Alan Zerrouki, Jérémie Margueritat, and Lucien Saviot. "Sub-THz Vibrational Dynamics in Ordered Mesoporous Silica Nanoparticles." Nanomaterials 13, no. 14 (July 15, 2023): 2078. http://dx.doi.org/10.3390/nano13142078.

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The vibrational dynamics in the sub-THz range of mesoporous silica nanoparticles (MSNs) having ordered cylindrical mesopores was investigated. MCM-41 and SBA-15 particles were synthesized, and their structure was determined using scanning electron microscopy (SEM), low-angle X-ray diffraction (XRD), N2 physisorption analyses, and Raman scattering. Brillouin scattering measurements are reported and enabled determining the stiffness of the silica walls (speed of sound) using finite element calculations for the ordered mesoporous structure. The relevance of this approach is discussed based on the comparison between the numerical and experimental results and previous works reported in the literature.

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Journal articles on the topic 'Mesoporous'

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