| Title: | Synergistic Effect of Reactive Oxygen Species in Photothermocatalytic Removal of VOCs from Cooking Oil Fumes over Pt/CeO(2)/TiO(2) |
| Author(s): | Feng Y; Ma P; Wang Z; Shi Y; Wang Z; Peng Y; Jing L; Liu Y; Yu X; Wang X; Zhang X; Deng J; Dai H; |
| Address: | "Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Department of Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing100124, China. Beijing Key Lab of Microstructure and Properties of Advanced Materials, Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing100124, China. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing100084, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "The volatile organic compounds (VOCs) from cooking oil fumes are very complex and do harm to humans and the environment. Herein, we develop the high-efficiency and energy-saving synergistic photothermocatalytic oxidation approach to eliminate the mixture of heptane and hexanal, the representative VOCs with high concentrations in cooking oil fumes. The Pt/CeO(2)/TiO(2) catalyst with nanosized Pt particles was prepared by the simple hydrothermal and impregnation methods, and the physicochemical properties of the catalyst were measured using numerous techniques. The Pt/CeO(2)/TiO(2) catalyst eliminated the VOC mixture at low light intensity (100 mW cm(-2)) and low temperature (200 degrees C). In addition, it showed 25 h of catalytic stability and water resistance (water concentration up to 20 vol %) at 140 or 190 degrees C. It is concluded that O(2) picked up the electrons from Pt to generate the (*)O(2)(-) species, which were transformed to the O(2)(2-) and O(-) species after the rise in temperature. In the presence of water, the (*)OH species induced by light irradiation on the catalyst surface and the (*)OOH species formed via the thermal reaction were both supplementary oxygen species for VOC oxidation. The synergistic interaction of photo- and thermocatalysis was generated by the reactive oxygen species" |
| Keywords: | Humans *Volatile Organic Compounds/chemistry Reactive Oxygen Species Gases Cooking Oxygen Water cooking oil fumes heptane and hexanal oxidation synergistic photothermocatalytic oxidation water resistance; |
| Notes: | "MedlineFeng, Ying Ma, Peijie Wang, Zhiwei Shi, Yijie Wang, Zhihua Peng, Yue Jing, Lin Liu, Yuxi Yu, Xiaohui Wang, Xun Zhang, Xiaofan Deng, Jiguang Dai, Hongxing eng Research Support, Non-U.S. Gov't 2022/11/23 Environ Sci Technol. 2022 Dec 6; 56(23):17341-17351. doi: 10.1021/acs.est.2c07146. Epub 2022 Nov 22" |
