Efficient charge separation of a Z-scheme Bi5O7-delta I/CeO2-delta heterojunction with enhanced visible light photocatalytic activity for NO removal

doi:10.1039/d2qi00391k

IEECAS OpenIR > 粉尘与环境研究室

	Efficient charge separation of a Z-scheme Bi5O7-delta I/CeO2-delta heterojunction with enhanced visible light photocatalytic activity for NO removal
	Yao, Ziyi 1; Nie, Junli 1; Ul Hassan, Qadeer 1; Li, Guian 1; Liao, Jiabin 2; Zhang, Weibin 3; Zhu, Lujun 1; Shi, Xianjin 4; Rao, Fei 1; Chang, Jun 1; Huang, Yu 4; Zhu, Gangqiang 1
通讯作者	Zhu, Lujun(zhulujun@snnu.edu.cn) ; Zhu, Gangqiang(zgq2006@snnu.edu.cn)
	2022-04-19
发表期刊	INORGANIC CHEMISTRY FRONTIERS
ISSN	2052-1553
页码	13
摘要	In this work, a novel Z-scheme Bi5O7-delta I/CeO2-delta heterojunction photocatalyst was prepared by combining hydrothermal synthesis and thermal treatment methods. Oxygen vacancies were in situ generated on the surface of Bi5O7-delta I and CeO2-delta nanostructures. The existence of oxygen vacancies significantly improved the light absorption of CeO2-delta and inhibited the recombination of photogenerated carriers. Based on the photocatalytic activity, the as-prepared Bi5O7-delta I/CeO2-delta photocatalyst exhibited excellent photocatalytic NO removal performance under visible light irradiation. The results of the capture experiment and electron spin resonance (ESR) spectroscopy show that super oxygen radicals (O-2(-)) and hydroxyl radicals (OH) are the main active species in the overall photocatalytic reaction process. Density functional theory (DFT) calculations and ESR results demonstrate that a Z-scheme heterojunction is formed between Bi5O7-delta I and CeO2-delta. Compared with the traditional type-II heterojunction, the Z-scheme heterojunction exhibited more efficient charge separation and robust redox capacity in the photocatalytic reaction.
DOI	10.1039/d2qi00391k
关键词[WOS]	MICROSPHERES ; MECHANISM
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[51772183] ; National Natural Science Foundation of China[52072230] ; Fundamental Research Funds for the Central Universities[2020TS028]
WOS研究方向	Chemistry
项目资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:000790424000001
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：5[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/361006/17726
专题	粉尘与环境研究室
通讯作者	Zhu, Lujun; Zhu, Gangqiang
作者单位	1.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710061, Peoples R China 2.Amer Int Grp Co Ltd, Inst Nanomat, Weinan 715100, Peoples R China 3.Yunnan Normal Univ, Inst Phys & Elect Informat, Kunming 650500, Yunnan, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Yao, Ziyi,Nie, Junli,Ul Hassan, Qadeer,et al. Efficient charge separation of a Z-scheme Bi5O7-delta I/CeO2-delta heterojunction with enhanced visible light photocatalytic activity for NO removal[J]. INORGANIC CHEMISTRY FRONTIERS,2022:13.
APA	Yao, Ziyi.,Nie, Junli.,Ul Hassan, Qadeer.,Li, Guian.,Liao, Jiabin.,...&Zhu, Gangqiang.(2022).Efficient charge separation of a Z-scheme Bi5O7-delta I/CeO2-delta heterojunction with enhanced visible light photocatalytic activity for NO removal.INORGANIC CHEMISTRY FRONTIERS,13.
MLA	Yao, Ziyi,et al."Efficient charge separation of a Z-scheme Bi5O7-delta I/CeO2-delta heterojunction with enhanced visible light photocatalytic activity for NO removal".INORGANIC CHEMISTRY FRONTIERS (2022):13.