Creation of robust oxygen vacancies in 2D ultrathin BiOBr nanosheets by irradiation through photocatalytic memory effect for enhanced CO2 reduction

doi:10.1016/j.cej.2023.146892

IMR OpenIR

	Creation of robust oxygen vacancies in 2D ultrathin BiOBr nanosheets by irradiation through photocatalytic memory effect for enhanced CO2 reduction
	Lu, Lizhen 1; Zhang, Haoyu 1; Sun, Zhe 2; Wang, Jinghui 3; Wang, Haolin 1; Xue, Jinbo 2; Shen, Qianqian 2; Li, Qi 1,4
通讯作者	Li, Qi(qiliuiuc@swjtu.edu.cn)
	2023-12-01
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	477 页码:13
摘要	An interesting photocatalytic memory effect was found in 2D ultrathin BiOBr nanosheets, which endowed them the capability to trap photogenerated electrons on Bi3+ and Br- in this material system for an extended period of time and resulted in the creation of stable oxygen vacancies (Ov) by just visible light irradiation due to the charge balance requirement. Thus, a broader visible light absorption, more negative conduction band minimum, stronger piezoelectric response, better charge carrier separation and transfer, and enhanced CO2 adsorption and activation were occurred in these BiOBr nanosheets with prior visible light irradiation, all of which were beneficial for their enhanced CO2 reduction performances in photocatalysis, piezocatalysis, and photo-piezocatalysis, respectively, than their counterparts without it. This work demonstrated a novel approach to create oxygen vacancies by light irradiation through the photocatalytic memory effect, which could be readily applied to similar photocatalyst systems to boost their performances and generate novel functionalities.
关键词	BiOBr nanosheets Photocatalytic memory effect Oxygen vacancy CO2 reduction Photopiezocatalysis
资助者	National Natural Science Founda-tion of China ; Fundamental Research Funds for the Central Universities ; Sichuan Science and Technology Program
DOI	10.1016/j.cej.2023.146892
收录类别	SCI
语种	英语
资助项目	National Natural Science Founda-tion of China[52272125] ; Fundamental Research Funds for the Central Universities[YX1199912371401-009] ; Sichuan Science and Technology Program[2020YJ0259]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001105484400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177469
专题	中国科学院金属研究所
通讯作者	Li, Qi
作者单位	1.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Peoples R China 2.Taiyuan Univ Technol, Coll Mat Sci & Engn, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.111 Sect 1,Northern Second Ring Rd, Chengdu 610031, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Lu, Lizhen,Zhang, Haoyu,Sun, Zhe,et al. Creation of robust oxygen vacancies in 2D ultrathin BiOBr nanosheets by irradiation through photocatalytic memory effect for enhanced CO2 reduction[J]. CHEMICAL ENGINEERING JOURNAL,2023,477:13.
APA	Lu, Lizhen.,Zhang, Haoyu.,Sun, Zhe.,Wang, Jinghui.,Wang, Haolin.,...&Li, Qi.(2023).Creation of robust oxygen vacancies in 2D ultrathin BiOBr nanosheets by irradiation through photocatalytic memory effect for enhanced CO2 reduction.CHEMICAL ENGINEERING JOURNAL,477,13.
MLA	Lu, Lizhen,et al."Creation of robust oxygen vacancies in 2D ultrathin BiOBr nanosheets by irradiation through photocatalytic memory effect for enhanced CO2 reduction".CHEMICAL ENGINEERING JOURNAL 477(2023):13.