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Статті в журналах з теми "High-performance photocatalysts"
Thattil, Preeja P., and A. Leema Rose. "High Photocatalytic Performance of Modified Bismuth Oxychloride Semiconductor under Sunlight." Oriental Journal Of Chemistry 37, no. 4 (August 30, 2021): 770–78. http://dx.doi.org/10.13005/ojc/370402.
Повний текст джерелаHu, Xuefeng, Ting Luo, Yuhan Lin, and Mina Yang. "Construction of Novel Z-Scheme g-C3N4/AgBr-Ag Composite for Efficient Photocatalytic Degradation of Organic Pollutants under Visible Light." Catalysts 12, no. 11 (October 25, 2022): 1309. http://dx.doi.org/10.3390/catal12111309.
Повний текст джерелаTigabu Bekele, Mekonnen. "Photocatalytic degradation of organic pollutants in the presence of selected transition metal nanoparticles: review." Journal of Plant Science and Phytopathology 6, no. 3 (September 29, 2022): 115–25. http://dx.doi.org/10.29328/journal.jpsp.1001084.
Повний текст джерелаHong, Xiaodong, Xu Wang, Yang Li, Jiawei Fu, and Bing Liang. "Progress in Graphene/Metal Oxide Composite Photocatalysts for Degradation of Organic Pollutants." Catalysts 10, no. 8 (August 11, 2020): 921. http://dx.doi.org/10.3390/catal10080921.
Повний текст джерелаJi, Zhilin, Hongwei Wang, and Xilin She. "A Novel CdS Quantum Dots Decorated 3D Bi2O2CO3 Hierarchical Nanoflower with Enhanced Photocatalytic Performance." Catalysts 10, no. 9 (September 11, 2020): 1046. http://dx.doi.org/10.3390/catal10091046.
Повний текст джерелаCheng, Ruolin, Elke Debroye, Johan Hofkens, and Maarten B. J. Roeffaers. "Efficient Photocatalytic CO2 Reduction with MIL-100(Fe)-CsPbBr3 Composites." Catalysts 10, no. 11 (November 20, 2020): 1352. http://dx.doi.org/10.3390/catal10111352.
Повний текст джерелаHe, Kang, Yu Chen, and Mengjun Mei. "Study on influencing factors of photocatalytic performance of CdS/TiO2 nanocomposite concrete." Nanotechnology Reviews 9, no. 1 (November 27, 2020): 1160–69. http://dx.doi.org/10.1515/ntrev-2020-0074.
Повний текст джерелаIbrahim, Islam, George V. Belessiotis, Michalis K. Arfanis, Chrysoula Athanasekou, Athanassios I. Philippopoulos, Christiana A. Mitsopoulou, George Em Romanos, and Polycarpos Falaras. "Surfactant Effects on the Synthesis of Redox Bifunctional V2O5 Photocatalysts." Materials 13, no. 20 (October 20, 2020): 4665. http://dx.doi.org/10.3390/ma13204665.
Повний текст джерелаBak, Tadeusz, Truls Norby, Janusz Nowotny, Maria K. Nowotny, and Nikolaus Sucher. "Titanium Dioxide Photocatalyst - Unresolved Problems." Solid State Phenomena 162 (June 2010): 77–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.162.77.
Повний текст джерелаZhen, Yanzhong, Chunming Yang, Huidong Shen, Wenwen Xue, Chunrong Gu, Jinghao Feng, Yuecheng Zhang, Feng Fu, and Yucang Liang. "Photocatalytic performance and mechanism insights of a S-scheme g-C3N4/Bi2MoO6 heterostructure in phenol degradation and hydrogen evolution reactions under visible light." Physical Chemistry Chemical Physics 22, no. 45 (2020): 26278–88. http://dx.doi.org/10.1039/d0cp02199g.
Повний текст джерелаДисертації з теми "High-performance photocatalysts"
Liu, Xiaoqing. "Developing efficient photocatalysts for high-performance decomposition of perfluorooctanoic acid." Thesis, 2022. http://hdl.handle.net/10453/163178.
Повний текст джерелаPerfluorochemicals (PFCs) are a set of chemicals containing C-F bonds, which are concerned due to their persistent and toxicological properties. Perfluorooctanoic acid (PFOA, C7F15COOH) is one of the most widely used PFCs. Photocatalytic approaches appear to be an effective way for the removal of PFCs. We first used metal-organic frameworks (MOFs) derived In2O3 for photocatalytic degradation of PFOA under UV light irradiation. The results show that PFOA was completely decomposed in 3 h. MOFs-derived In2O3 was super-hydrophilic with a contact angle of ~20º, which facilitated the tight coordination between PFOA and In2O3. Lower calcination temperatures enable higher oxygen vacancy concentrations and larger specific surface area (SSA) of In2O3. In2O3 prepared at 300 ºC (In2O3-300) and 400 ºC (In2O3-400) demonstrated better catalytic performance, and PFOA (10 mg L‒1) could be completely removed within 4 h, with a defluorination ratio of 39% over In2O3-400 in 8h. Fe3+ only slightly increased the defluorination ratio of PFOA over In2O3-400 to 43%. A much higher defluorination ratio of ~60% was obtained in In2O3-600 system after the addition of Fe3+, than the defluorination ratio of ~20% over In2O3-600. Combined with a series of characterizations, we speculated that Fe3+ participated in the coordination between PFOA and In2O3-600, thus promoting the defluorination of PFOA. The BiOX/TiO2 heterojunctions demonstrated significantly enhanced efficiency for photocatalytic decomposition of perfluorooctanoic acid (PFOA) compared with BiOX or TiO2. PFOA (10 mg L‒1) was completely degraded by BiOCl/TiO2 in 8h with a high defluorination ratio of 82 %. The charge transfer and photo-induced electron hole separation were facilitated by the p-n heterojunctions between BiOX and TiO2 and the inner electric fields (IEF) in BiOX. XRD and TEM characterizations indicated that TiO2 combined with BiOX along the [110] facet, which facilitated photo-induced electron transfer in the [001] direction, thus benefiting PFOA decomposition. Single bismuth (Bi) atoms decorated TiO2 catalyst (N-Bi/TiO2) was synthesized by a green and simple UV irradiation method using Bi(NO3)3 as the precursor. When BiCl3 was used as the Bi precursor, BiOCl nanocluster were formed on the surface of TiO2 (denoted as Cl-Bi/TiO2). Both N-Bi/TiO2 and Cl-Bi/TiO2 demonstrated excellent performance for the defluorination of PFOA. In-situ DRIFTS spectra demonstrated that the Bi single atoms in N-Bi/TiO2 induced the ionization of C-F bond of PFOA, leading to the deep defluorination of PFOA. Our findings provide approaches for manipulating the photocatalytic activities of In2O3 and TiO2-based composites for the high-performance decomposition of PFOA.
Liao, Wei-Kun, and 廖為坤. "High performance of NiO/K2Ti6O13 Photocatalysts for Water-splitting to Produce Hydrogen." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/9dczz6.
Повний текст джерела大同大學
化學工程學系(所)
95
In this research, the photocatalysts K2TinO2n+1 are prepare by mixing K2CO3with TiO2 prepared by the so-gel method on the precursor at variable mole ratio, and are obtained by applying the solid state reacation method to calcinate respectively for 10 hour,24 hour and 50 hour. The photocatalysts prepared are then loaded with NiO on the carrier to obtain NiO/K2TinO2n+1. Finally, among these catalysts, those with the best potocatalyst activities for producing hydrogen are chosen for doping with Rh ion. The characteristic of the photocatalysts are analyzed respectively by means of X-ray diffraction analyzer (XRD), UV-vis spectrum analyzer, scanning electronic microscopy (SEM) and the specific surface area analyzer (BET). From XRD results, it can be known that the crystalline structure of the catalyst is K2Ti6O13; besides from UV-vis it can be observed that the photocatalyst K2Ti6O13 which have been doped with Rh ions possess strong ability of absorbing light within the extent of visible light. From SEM resalts it can be seen that surface appearance of the catalysts are in the form of rectangular whiskers. In addition, from BET results, it can be known that the catalysts with molar ratio value of 6 and after being calinated for 24 hours possess the largest (specific) surface area. The activities of photocatalysts K2Ti6O13 are measured by using batch reactor with respectively pure water and 10% methanol aqueous solution under the irradiation of ultraviolet light and visible light for splitting to produce hydrogen, and the compositions of the products are analyzed by means of gas chromatograph (GC). This research is to study the effects of the molar proportion of TiO2 to K2CO3 and the calination time on the structures and characteristics of the catalysts. Besides, the relationship between the optimal quantities of loading NiO with the activities and physical characteristics of the photocatalysts are deeply investigated. From experimental results, it can be known that with the molar ratio value TiO2/K2CO3 of 6, after being calinated for 24 hours, the photocatalyst 0.3wt% NiO/K2Ti6O13 under the irradiation of ultraviolet light possess the best water splitting reaction activity, and the active hydrogen production rate of the photocatalyst is 87.2μmol/h, in addition, with the irradiation of visible light, the hydrogen production rate of the photocatalyst 0.3wt% NiO//K2Ti6O13 is 33.6 μmol/h.
Xia, Bingquan. "Two-dimensional nanomaterials as photocatalysts for solar-driven production of chemicals." Thesis, 2022. https://hdl.handle.net/2440/135638.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Chemical Engineering and Advanced Materials, 2022
Lin, Chin-Han, and 林志翰. "High Performance of SrTiO3 Photocatalyst for Water-Splitting to Produce Hydrogen under Visible Light." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/85ah76.
Повний текст джерела大同大學
化學工程學系(所)
95
This research is mainly to investigate the application of the photocatalyst SrTiO3 in the visible light water-splitting reaction to produce hydrogen, so as to replace the petro-fuel. In this research, SrCO3 and commercial TiO2 are used as the precursors, the photocatalyst SrTiO3 is prepared by carrying out the solid state reaction to calcine the precursor for 10 hours. The photocatalysts SrTiO3 prepared are not only treated by doping with various ions of Cr, Rh and Ta ect. respectively, but also all carried with Pt in order to prepare the water splitting photocatalysts of high performance for producing hydrogen. The properties of SrTiO3 are measured respectively with X-ray diffraction analyzer (XRD), UV-Vis spectrum analyzer, Scanning electronic microscope (SEM) and specific surface area analyzer (BET). From the experimental result of XRD, it can be known that SrTiO3 is of the crystalline structure of perovskite, from UV-Vis results, it is known that SrTiO3 after doping with Cr,Rh and Ta respectively, has strong ability of absorbing light within the extent of visible light. From SEM results, the surface morphology of the photocatalysts SrTiO3 can be known after doping with metallic ions, the particles of photocatalysts become small, and from BET results, it can be known that the surface areas increase with the increase of the concentrations of doping metallic ions. The activity measurements of photocatalysts are proceeded by using batch reactors, the splitting reaction is carried out with respectively pure water and 10% methanol aqueous solution under the irradiation of the visible light of the 450W high pressure mercury arc light. In this research, the effects of the concentrations of doping metallic ions inside SrTiO3 and calcination temperatures on the catalyst characteristics and activities are studied. From the experiment results, it can be known that the catalysts, Pt(1wt%)/SrTiO3:RhTa(Rh:2mole%,Ta:2mole%), which are synthesized at the cination temperature of 1150℃, posses the highest rate of producing hydrogen of about 55μmole•h-1gcat.-1 in 10% methanol aqueous solution.
Biaduń, Ewa. "Przygotowanie próbek wód zanieczyszczonych do analizy specjacyjnej As, Cr i Tl." Doctoral thesis, 2019. https://depotuw.ceon.pl/handle/item/3459.
Повний текст джерелаSample preparation for speciation analysis is a difficult task, practically each sample and each analyte requires unique analytical scenarios. As, Cr i Tl belong to the group of elements included in the list of research priorities of the American Environmental Protection Agency (US EPA). Toxicity, mobility, or bioavailability of many elements depend on their oxidation state and chemical form. For this reason speciation analysis is an important element of modern environmental monitoring. The most toxic forms of As are inorganic compounds, while organic arsenic compounds are non-toxic. Cr(III) compounds are less soluble and more stable, while Cr(VI) compounds are more soluble and mobile in the natural aqueous environment. Tl(III) compounds are more toxic than Tl(I) compounds. Water, which is an abiotic element of the environment, is responsible for transport of pollutants and changes of the speciation forms of elements. Water can be divided into two phases: dissolved phase which is responsible for the transport of pollutants and suspended particulate matter (SPM) which is responsible for co-precipitation of chemical forms of As, Cr and Tl. Water samples containing surface active compounds were collected. The affinity of selected As, Cr and Tl forms for SPM was checked. The speciation forms were separated and preconcentrated using solid phase extraction. Various sorbents have been applied, e.g. SGX C18 modified with ammonium pyrolidinedithiocarbamate and alumina modified with sodium dodecyl sulphate (SDS). The possibility of simultaneous separation of As(III), Cr(III) and Tl(III) from water was tested. However, a complete procedure was developed only for separation and preconcentration of Tl(III) from the water matrix. Next, the possibility of application of photocatalysts: tungsten and iron oxides for decomposition of surface-active compounds before the speciation of As, Cr and Tl was tested. Different active layers consisting of tungsten and iron oxides have been proposed. These active layers were evaluated during the decomposition of SDS and Triton X-114. Decomposition efficiency was evaluated on the basis of voltammetric determination of trace amounts of Pb(II) with a mercury electrode, which is very sensitive to interferences from organic compounds. Selected photolayers were tested in the degradation of organic compounds before speciation analysis of arsenic, chromium and thallium. A complete procedure (from sampling to determination) for analysis of As and Tl compounds in waters with high content of surfactants was developed. Analytical scenarios based on photocatalysis could be included in the modern environmental monitoring.
Частини книг з теми "High-performance photocatalysts"
Goutham, R., K. P. Gopinath, A. Ramprasath, B. Srikanth, and R. Badri Narayan. "High-Performance Photocatalysts for Organic Reactions." In Environmental Chemistry for a Sustainable World, 219–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04949-2_9.
Повний текст джерелаWei, Zhen, and Yongfa Zhu. "Synthesis and Performance Enhancement for Bi2WO6 as High-Activity Visible-Light-Driven Photocatalysts." In Nanostructured Photocatalysts, 359–89. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26079-2_21.
Повний текст джерелаLin, Xin Ping, Fu Qiang Huang, Wen Deng Wang, Zhi Chao Shan, and Jian Lin Shi. "A Series of Bi-Based Oxychlorides as Efficient Photocatalysts." In High-Performance Ceramics V, 1503–6. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.1503.
Повний текст джерелаE, Lei, Ming Xia Xu, Lei Ge, Yu Ming Tian, Yan Li, and Tiantian Xu. "Preparation and Properties of Titanium Oxide Photocatalyst with Visible Light Activity." In High-Performance Ceramics III, 377–80. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-959-8.377.
Повний текст джерелаLee, Ming Kwei, Tsung Hsiang Shih, Chen Lia Ho, Hung Chang Lee, Chih Feng Yen, Hwai Fu Tu, and Cho Han Fan. "Photocatalyses of Nano-Scaled ZnSe/TiO2 and ZnS/TiO2 Heterojunctions." In High-Performance Ceramics V, 1474–76. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.1474.
Повний текст джерелаBalakrishnan, Neethu T. M., Asha Paul, M. A. Krishnan, Akhila Das, Leya Rose Raphaez, Jou-Hyeon Ahn, M. J. Jabeen Fatima, and Raghavan Prasanth. "Lithium Iron Phosphate (LiFePO4) as High-Performance Cathode Material for Lithium Ion Batteries." In Metal, Metal-Oxides and Metal Sulfides for Batteries, Fuel Cells, Solar Cells, Photocatalysis and Health Sensors, 35–73. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63791-0_2.
Повний текст джерелаSingha, Monoj Kumar, and Vineet Rojwal. "Spray Pyrolysis Thin Film Deposition Technique for Micro-Sensors and Devices." In Advances in Systems Analysis, Software Engineering, and High Performance Computing, 178–202. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2584-5.ch011.
Повний текст джерелаNyika, Joan Mwihaki. "Nanotechnology and Its Applications in Environmental Remediation." In Applications of Nanomaterials in Agriculture, Food Science, and Medicine, 29–48. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-5563-7.ch002.
Повний текст джерелаNyika, Joan Mwihaki. "Nanotechnology and Its Applications in Environmental Remediation." In Research Anthology on Emerging Techniques in Environmental Remediation, 71–90. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3714-8.ch004.
Повний текст джерелаТези доповідей конференцій з теми "High-performance photocatalysts"
Liu, Hong. "Approaches to build nanostructured high performance photocatalysts——principles and practices." In Photonics for Energy. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/pfe.2015.pw2f.4.
Повний текст джерелаChen, Yen-Shin, Bo-Kai Chao, Tadaaki Nagao, and Chun-Hway Hsueh. "Improvement of Photocatalytic Efficiency by Adding Ag Nanoparticles and Reduced Graphene Oxide to TiO2." In JSAP-OSA Joint Symposia. Washington, D.C.: Optica Publishing Group, 2017. http://dx.doi.org/10.1364/jsap.2017.5p_a410_12.
Повний текст джерелаYamamoto, K., Y. Matsuura, A. Nakamura, T. Sonoda, S. Matsushima, and K. Yamada. "Plasma CVD treatment for titanium dioxides to approach the high performance of photocatalysts by visible light irradiation." In 2010 IEEE Region 10 Conference (TENCON 2010). IEEE, 2010. http://dx.doi.org/10.1109/tencon.2010.5686668.
Повний текст джерелаWullenkord, Michael, Christian Jung, and Christian Sattler. "Design of a Concentrator With a Rectangular Flat Focus and Operation With a Suspension Reactor for Experiments in the Field of Photocatalytic Water Splitting." In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6546.
Повний текст джерелаNara, Matsunori, and Keiji Yoda. "Purification of Sea Pollution by a Bio-Micromachine." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79240.
Повний текст джерелаLi, Chang-Jiu, Guan-Jun Yang, Xin-Chun Huang, Wen-Ya Li, and Akira Ohmori. "Formation of TiO2 Photocatalyst Through Cold Spraying." In ITSC2004, edited by Basil R. Marple and Christian Moreau. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.itsc2004p0315.
Повний текст джерелаLelis, M. "Investigation of bi-layered ZnO-Ni photocatalyst powder produced by reactive magnetron sputtering technique." In Global Advanced Materials & Surfaces - GAMS International Conference 2022. SETCOR Conferences and Events, 2022. http://dx.doi.org/10.26799/cp-gams2022/1.
Повний текст джерелаЗвіти організацій з теми "High-performance photocatalysts"
Asenath-Smith, Emily, Emma Ambrogi, Eftihia Barnes, and Jonathon Brame. CuO enhances the photocatalytic activity of Fe₂O₃ through synergistic reactive oxygen species interactions. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/42131.
Повний текст джерела