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J Hazard Mater

Title:		Enhanced light-driven photothermocatalytic activity on selectively dissolved LaTi(1-)(x)Mn(x)O(3+)(delta) perovskites by photoactivation
Author(s):		Yu E; Chen J; Jia H;
Address:		"School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China; CAS Center for Excellence in Regional Atmospheric Environment, and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China. University of Chinese Academy of Sciences, Beijing 100049, China; Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China; CAS Center for Excellence in Regional Atmospheric Environment, and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: hpjia@iue.ac.cn"
Journal Title:		J Hazard Mater
Year:		2020
Volume:		20200525
Issue:
Page Number:		122942 -
DOI:		10.1016/j.jhazmat.2020.122942
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"LaTi(1-)(x)Mn(x)O(3+)(delta) (x = 0.2 and 0.4) perovskite-type catalysts are synthesized by acrylamide polymerization route and etched with diluted HNO(3) for oxidation of toluene as one of typical volatile organic compounds (VOCs). The substitution of Mn cations improves catalytic activity (toluene conversion increased from 0 to 50.6% by substituting 40% of Ti cations with Mn cations) by improving abilities of light absorption and light-to-heat conversion, and acid etching further promotes catalytic activity (toluene conversion increased from 50.6%-95.6% for LaTi(0.6)Mn(0.4)O(3+)(delta)) by enlarging specific surface area, generating more surface active oxygen, strengthening mobility of surface oxygen, and improving low-temperature reducibility. To explore the origin of the light-driven photothermocatalytic activity of A-LaTi(0.6)Mn(0.4)O(3+)(delta) by EPR analysis, O(2) desorption and H(2) consumption, we find that the light is not only as a thermal source to provide energy for toluene oxidation but also can promote oxidation reaction by photoactivation"
Keywords:		Acid treatment Light-driven photothermocatalysis Perovskite Photoactivation VOCs;
Notes:		"PubMed-not-MEDLINEYu, Enqi Chen, Jing Jia, Hongpeng eng Research Support, Non-U.S. Gov't Netherlands 2020/09/18 J Hazard Mater. 2020 Nov 15; 399:122942. doi: 10.1016/j.jhazmat.2020.122942. Epub 2020 May 25"