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Synergistic effect of interstitial C doping and oxygen vacancies on the photoreactivity of TiO2 nanofibers towards CO2 reduction

文献类型：期刊论文

作者Li, Yuhan3,4; Ren, Ziteng4; Gu, Miaoli4; Duan, Youyu4; Zhang, Wei2; Lv, Kangle1
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2022-11-15
卷号317页码:11
关键词TiO2 nanofibers CO2 photoreduction Electron transfer channel Surface oxygen vacancy Photocatalytic mechanism
ISSN号0926-3373
DOI10.1016/j.apcatb.2022.121773
通讯作者Duan, Youyu(youyuduan@cqu.edu.cn) ; Zhang, Wei(zhangwei@cigit.ac.cn) ; Lv, Kangle(lvkangle@mail.scuec.edu.cn)
英文摘要TiO2 nanofiber membranes were prepared by calcinating the electrospun TiO2 nanofibers precursor. Sample calcined at 400 ?C (T400) exhibited high CO2 to CH4 conversion efficiency (55.17 mu mol.g(- 1).h(-1)) and electron selectivity (98.3%) under simulated sunlight. In-situ DRIFTS and the calculated Gibbs free energy revealed CO* to be a major intermediate with the formation of COH* intermediate being the rate-limiting step. The considerable CO2 photoreduction behavior obtained on T400 sample can be attributed to the following causes: (1) the existence of surface OVs gives the change in electronic structure by upshifting CB position to be capable of CO2 photoreduction; (2) the surface Ti terminals acted as reaction sites, resulting in the accumulation of CO* intermediates to continually produce CH4 with the support of sufficient electrons. These results lay the foundation for advancing the mechanistic insight on CO2 photoreduction and its selectivity to CO2 to CH4.
资助项目National Natural Science Foundation of China[51808080] ; National Natural Science Foundation of China[51672312] ; China Postdoctoral Science Foundation[2022M710830] ; Research Project of Chongqing Education Commission Foundation[KJQN201800826] ; Science and Technology Research Program of Chongqing Municipal Education Commission of China[KJZD-K202100801] ; Natural Science Foundation of Chongqing China[cstc2021jcyj-jqX0031] ; Chongqing Talents: Exceptional Young Talents Project[CQYC201905041] ; Chongqing University Innovation Research Group project[CXQT21023]
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000841965200002
出版者ELSEVIER
源URL[http://119.78.100.138/handle/2HOD01W0/16459]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Duan, Youyu; Zhang, Wei; Lv, Kangle
作者单位1.South Cent Minzu Univ, Coll Resources & Environm, Key Lab Resources Convers Pollut Control State Eth, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Nanchang Inst Technol, Nanchang, Peoples R China
4.Chongqing Technol & Business Univ, Engn Res Ctr Waste Oil Recovery Technol & Equipmen, Chongqing Key Lab Catalysis & New Environm Mat, Minist Educ, Chongqing 400067, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yuhan,Ren, Ziteng,Gu, Miaoli,et al. Synergistic effect of interstitial C doping and oxygen vacancies on the photoreactivity of TiO2 nanofibers towards CO2 reduction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2022,317:11.
APA Li, Yuhan,Ren, Ziteng,Gu, Miaoli,Duan, Youyu,Zhang, Wei,&Lv, Kangle.(2022).Synergistic effect of interstitial C doping and oxygen vacancies on the photoreactivity of TiO2 nanofibers towards CO2 reduction.APPLIED CATALYSIS B-ENVIRONMENTAL,317,11.
MLA Li, Yuhan,et al."Synergistic effect of interstitial C doping and oxygen vacancies on the photoreactivity of TiO2 nanofibers towards CO2 reduction".APPLIED CATALYSIS B-ENVIRONMENTAL 317(2022):11.

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来源：重庆绿色智能技术研究院

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