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In-situ generation of oxygen vacancies and metallic bismuth from (BiO)(2)CO3 via N-2-assisted thermal-treatment for efficient selective photocatalytic NO removal

文献类型：期刊论文

作者Rao, Fei1,2; Zhu, Gangqiang1; Zhang, Weibin3; Gao, Jianzhi1; Zhang, Fuchun4; Huang, Yu2; Hojamberdiev, Mirabbos5
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2021-02-01
卷号281页码:12
ISSN号0926-3373
关键词Bismuth-based photocatalysts Oxygen vacancy Bi(0)nanoparticles NO removal ohmic contact
DOI10.1016/j.apcatb.2020.119481
通讯作者Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
英文摘要In this study, a N-2-assisted thermal treatment method is proposed for in-situ formation of a series of oxygen vacancies (OVs)-rich Bi-0/Bi-based photocatalysts, including OVs-(BiO)(2)CO3, Bi-0/OVs-(BiO)(2)CO3, Bi-0/OVs(BiO)(2)CO3/beta-Bi2O3, Bi-0/OVs-beta-Bi2O3, Bi-0/OVs-beta-Bi2O3/alpha-Bi2O3 and Bi-0/alpha-Bi2O3. Mechanisms of in-situ formation of Bi-0 nanoparticles and generation of OVs in Bi-based photocatalysts are clarified. Apart from their contribution to the effective separation of photogenerated charge carriers and enhancement of light absorption, the effects of Bi-0 nanoparticles and OVs on selective photocatalytic oxidation of NO are also investigated. Among the synthesized Bi-based photocatalysts, Bi-0/OVs-(BiO)(2)CO3 shows the best photocatalytic activity and stability for photo-oxidative removal of NO. The systematic study of photocatalytic mechanism demonstrated that the Ohmic contact between OVs-(BiO)(2)CO3 and Bi-0 gradually promote the formation of center dot O-2(-) and center dot OH species. It is found that center dot O-2(-) plays an important role in the photocatalytic NO removal process, while center dot OH species can effectively inhibit the formation of NO2 during the NO removal process. The new approach demonstrated in this study can be applied for the in-situ formation of wide-solar-spectrum-responsive photocatalysts with efficient photo catalytic activity.
WOS关键词VISIBLE-LIGHT ; BI METAL ; MOLECULAR-OXYGEN ; CHARGE-TRANSFER ; SURFACE ; MICROSPHERES ; DEGRADATION ; MECHANISM ; OXIDE ; TIO2
资助项目National Natural Science Foundation of China[51772183] ; key Research and Development Program of Shaanxi Province[2018ZDCXL-SF02-04] ; Fundamental Research Funds for the Central Universities[GK201903023] ; Fundamental Research Funds for the Central Universities[GK201801005]
WOS研究方向Chemistry ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000591344900005
资助机构National Natural Science Foundation of China ; key Research and Development Program of Shaanxi Province ; Fundamental Research Funds for the Central Universities
源URL[http://ir.ieecas.cn/handle/361006/15537]  
专题地球环境研究所_粉尘与环境研究室
通讯作者Zhu, Gangqiang; Huang, Yu
作者单位1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
3.Yangtze Univ, Sch Phys & Optoelect Engn, Jingzhou 434023, Peoples R China
4.Yanan Univ, Coll Phys & Elect Informat, Yanan 716000, Peoples R China
5.Tech Univ Berlin, Inst Chem, Str 17 Juni 135, D-10623 Berlin, Germany
推荐引用方式
GB/T 7714		 Rao, Fei,Zhu, Gangqiang,Zhang, Weibin,et al. In-situ generation of oxygen vacancies and metallic bismuth from (BiO)(2)CO3 via N-2-assisted thermal-treatment for efficient selective photocatalytic NO removal[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,281:12.
APA Rao, Fei.,Zhu, Gangqiang.,Zhang, Weibin.,Gao, Jianzhi.,Zhang, Fuchun.,...&Hojamberdiev, Mirabbos.(2021).In-situ generation of oxygen vacancies and metallic bismuth from (BiO)(2)CO3 via N-2-assisted thermal-treatment for efficient selective photocatalytic NO removal.APPLIED CATALYSIS B-ENVIRONMENTAL,281,12.
MLA Rao, Fei,et al."In-situ generation of oxygen vacancies and metallic bismuth from (BiO)(2)CO3 via N-2-assisted thermal-treatment for efficient selective photocatalytic NO removal".APPLIED CATALYSIS B-ENVIRONMENTAL 281(2021):12.

入库方式： OAI收割

来源：地球环境研究所

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