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

doi:10.1016/j.apcatb.2020.119481

IEECAS OpenIR > 粉尘与环境研究室

	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
	Rao, Fei 1,2; Zhu, Gangqiang 1; Zhang, Weibin 3; Gao, Jianzhi 1; Zhang, Fuchun 4; Huang, Yu 2; Hojamberdiev, Mirabbos 5
通讯作者	Zhu, Gangqiang(zgq2006@snnu.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
	2021-02-01
发表期刊	APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN	0926-3373
卷号	281 页码:12
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.
关键词	Bismuth-based photocatalysts Oxygen vacancy Bi(0)nanoparticles NO removal ohmic contact
DOI	10.1016/j.apcatb.2020.119481
关键词[WOS]	VISIBLE-LIGHT ; BI METAL ; MOLECULAR-OXYGEN ; CHARGE-TRANSFER ; SURFACE ; MICROSPHERES ; DEGRADATION ; MECHANISM ; OXIDE ; TIO2
收录类别	SCI ; SCI
语种	英语
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
项目资助者	National Natural Science Foundation of China ; key Research and Development Program of Shaanxi Province ; Fundamental Research Funds for the Central Universities
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000591344900005
出版者	ELSEVIER
引用统计	被引频次：91[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15538
专题	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.