Porous beta-Bi2O3 with multiple vacancy associates on highly exposed active {220} facets for enhanced photocatalytic activity

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Porous beta-Bi2O3 with multiple vacancy associates on highly exposed active {220} facets for enhanced photocatalytic activity
	Zhang, Lili; Shi, Yilun; Wang, Zhiqiang; Hu, Chun; Shi, Baoyou; Cao, Xingzhong
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2020-05-15
卷号	265 页码:1-8
关键词	(P)orous beta-Bi2O3-{220} Bi-O vacancy associates Visible light Photocatalysis Pollutants degradation
ISSN号	0926-3373
英文摘要	Porous beta-Bi2O3 with highly exposed {220} facets was fabricated for the first time and the formation of surface multiple Bi-O vacancy associates was confirmed by the photoluminescence, positron annihilation spectra, and theoretical calculations. Compared with traditional nonporous beta-Bi2O3-{201}, the photocatalytic rate of porous beta-Bi2O3-{220} was more than twice faster and the photoconversion efficiency increased by 20 times. And various refractory organic pollutants can be effectively degraded and mineralized under visible light. Multiple Bi-O vacancy associates were demonstrated to change electronic structure and enhance the polarization of the related atoms and orbitals. The photogenerated charge separation and transfer was thus improved to produce more surface active species. Simultaneously, the electron transfer from pollutants to the catalyst was found to be accelerated, finally leading to the outstanding photocatalytic performances of porous beta-Bi2O3-{220}. These findings provide useful insights into the development of visible-light-driven photocatalysts for water purification.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45345]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Zhang, Lili,Shi, Yilun,Wang, Zhiqiang,et al. Porous beta-Bi2O3 with multiple vacancy associates on highly exposed active {220} facets for enhanced photocatalytic activity[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,265:1-8.
APA	Zhang, Lili,Shi, Yilun,Wang, Zhiqiang,Hu, Chun,Shi, Baoyou,&Cao, Xingzhong.(2020).Porous beta-Bi2O3 with multiple vacancy associates on highly exposed active {220} facets for enhanced photocatalytic activity.APPLIED CATALYSIS B-ENVIRONMENTAL,265,1-8.
MLA	Zhang, Lili,et al."Porous beta-Bi2O3 with multiple vacancy associates on highly exposed active {220} facets for enhanced photocatalytic activity".APPLIED CATALYSIS B-ENVIRONMENTAL 265(2020):1-8.