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Environ Sci Pollut Res Int

Title:		Crystallization of microporous TiO(2) through photochemical deposition of Pt for photocatalytic degradation of volatile organic compounds
Author(s):		Li J; Wang Y; Tian Y; He X; Yang P; Yuan M; Cao Y; Lyu J;
Address:		"School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China. Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China. School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China. ljz@jiangnan.edu.cn. Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China. ljz@jiangnan.edu.cn"
Journal Title:		Environ Sci Pollut Res Int
Year:		2018
Volume:		20180325
Issue:		16
Page Number:		15662 - 15670
DOI:		10.1007/s11356-018-1767-y
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"The photocatalytic mineralization efficiency of volatile organic compounds (VOCs) is determined by adsorption of reactants, separation of charge carriers, and reaction activity of catalyst surface. Herein, we provide a strategy to synthesize a novel catalyst, namely, PhPt-Micro, which is characterized by high adsorption ability, charge separation efficiency, and surface reaction activity. Toluene was chosen as the model VOC. The effects of photochemical deposition of Pt on the physical properties of microporous amorphous TiO(2) (Micro) and toluene mineralization were studied using N(2) adsorption/desorption, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, GC-flame ionization detection, and surface photovoltage spectroscopy (SPS) analyses. After photochemical treatment, the structure of Micro was optimized, and Pt nanoparticles were successfully deposited at the outlet of electrons on the catalyst surface. SPS result proved that the optimized structure enhanced the separation efficiency of charge carriers and the migration of photo-generated electrons to the PhPt-Micro surface. The quasi-equilibrium adsorption amount of toluene over PhPt-Micro was two times higher than that with commercial nano TiO(2) (P25). The micropores concentrated toluene on the catalyst surface and hindered intermediate desorption. The mineralization efficiency of toluene over PhPt-Micro was 2.4 and 5.9 times higher than those over Micro and P25, respectively"
Keywords:		Adsorption Catalysis Crystallization Environmental Pollutants/*analysis Photochemical Processes *Photolysis Platinum/*chemistry Titanium/*chemistry Toluene/*analysis Charge carrier Photocatalysis Surface defect Surface photovoltage Toluene;
Notes:		"MedlineLi, Ji Wang, Yanhong Tian, Yiyuan He, Xuan Yang, Pingping Yuan, Minghui Cao, Yuqing Lyu, Jinze eng 2017ZX07202001-004, 2017ZX07202001-005/Major Science and Technology Program for Water Pollution Control and Treatment/ BK20150126/Natural Science Foundation of Jiangsu Province/ 21707051/National Natural Science Foundation of China/ JUSRP51512/Fundamental Research Funds for the Central Universities/ Germany 2018/03/27 Environ Sci Pollut Res Int. 2018 Jun; 25(16):15662-15670. doi: 10.1007/s11356-018-1767-y. Epub 2018 Mar 25"