Noble metal free, CeO2/LaMnO3 hybrid achieving efficient photo-thermal catalytic decomposition of volatile organic compounds under IR light - Details

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Abstract：

Large　amounts　of　anthropogenic　VOCs　emissions　give　rise　to　photochemical　smog　and　ground-level　ozone.　Currently,　catalytic　oxidation　for　VOCs　elimination　still　requires　energy-intensive　high　temperatures.　Light-driven　photo-thermocatalysis　oxidation　of　VOCs　holds　great　promise　to　substantially　reduce　energy　consumption　for　sustainable　development　in　comparison　with　conventional　thermal-based　catalytic　oxidation.　Herein,　CeO2/LaMnO3　composite,　featuring　the　broad　light　wavelength　absorption　(800∼1800　nm),　can　be　used　as　a　highly　active　photo-thermal　responsive　catalyst　on　VOCs　decomposition　under　IR　irradiation.　The　maximum　photo-thermal　conversion　efficiency　is　able　to　reach　15.2%　with　a　significant　toluene　conversion　of　89%　and　CO2　yield　of　87%　under　IR　irradiation　intensity　of　280　mW/cm2,　together　with　excellent　stability　of　nearly　30　h.　Comparative　characterizations　reveal　that　such　photo-thermal　catalytic　activity　enhancement　is　predominantly　attributed　to　the　synergistic　effects　of　ultrabroadband　strong　light　absorption,　efficient　light-to-heat　conversion,　good　low　temperature　reducibility　and　high　lattice　oxygen　mobility,　originating　from　an　intense　interaction　of　LaMnO3　with　CeO2.　Toluene　oxidation　reaction　on　CeO2/LaMnO3　catalyst　proceeds　via　a　Mars-van　Krevelen　mechanism　as　evidenced　by　in　situ　diffuse　reflectance　infrared　Fourier　transform　spectroscopy.　©　2018　Elsevier　B.V.

Keyword：

CeO2/LaMnO3; IR light; Mars-van Krevelen; Photo-thermocatalysis; VOCs

Community：

[ 1 ] [Li, J.-J.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 2 ] [Li, J.-J.]Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 3 ] [Yu, E.-Q.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 4 ] [Yu, E.-Q.]Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 5 ] [Yu, E.-Q.]University of Chinese Academy of Sciences, Beijing, 100049, China
[ 6 ] [Cai, S.-C.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 7 ] [Cai, S.-C.]Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 8 ] [Cai, S.-C.]University of Chinese Academy of Sciences, Beijing, 100049, China
[ 9 ] [Chen, X.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 10 ] [Chen, X.]Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 11 ] [Chen, X.]University of Chinese Academy of Sciences, Beijing, 100049, China
[ 12 ] [Chen, J.]University of Chinese Academy of Sciences, Beijing, 100049, China
[ 13 ] [Chen, J.]Xiamen Institute of Rare-earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
[ 14 ] [Jia, H.-P.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 15 ] [Jia, H.-P.]Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
[ 16 ] [Jia, H.-P.]University of Chinese Academy of Sciences, Beijing, 100049, China
[ 17 ] [Xu, Y.-J.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, China
[ 18 ] [Xu, Y.-J.]College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Jia, H.-P.]CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of SciencesChina

Email：

hpjia@iue.ac.cn

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2019

Volume： 240

Page： 141-152

1 6 . 6 8 3

JCR@2019

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：184

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

30 Days PV： 0

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