Bi3TaO7/Ti3C2 heterojunctions for enhanced photocatalytic removal of water-borne contaminants

doi:10.1016/j.envres.2020.109409

	Bi3TaO7/Ti3C2 heterojunctions for enhanced photocatalytic removal of water-borne contaminants
	Li, Kunshan 2; Lu, Xinyu 2; Zhang, You 2; Liu, Kuiliang 2; Huang, Yongchao 2; Liu, Hong 1
刊名	ENVIRONMENTAL RESEARCH
	2020-06-01
卷号	185 页码:9
关键词	Photocatalysis Bismuth tantalite Ti3C2 Environmental remediation Charge separation
ISSN号	0013-9351
DOI	10.1016/j.envres.2020.109409
通讯作者	Huang, Yongchao(huangych@gzhu.edu.cn) ; Liu, Hong(liuhong@cigit.ac.cn)
英文摘要	Novel catalysts are of great interest for improved photocatalytic environmental remediation. Using a hydrothermal method, 0D/2D Bi3TaO7/Ti3C2 heterojunctions were designed rationally and characterized systematically as excellent photocatalysts for photocatalytic degradation. The hybrid catalyst exhibits superior performance in visible-light-driven photocatalytic degradation of methylene blue (about 99% degradation efficiency after 2 h) and excellent stability (up to 10 cycles) under visible light irradiation (300 W Xe lamp; lambda > 420 nm; light intensity 150 mW cm(-2)). In addition, Bi3TaO7/Ti3C2 has a larger rate constant (0.032 min(-1)) than pristine Bi3TaO7 (0.006 min(-1)). Quantum yield (2.27 x 10(-5) molecules/photon) and figure of merit (23.3) of the system were obtained, suggesting that our catalyst has potential for application. Both experimental and computational results indicate that synergistic effects between Bi3TaO7 and Ti3C2 improve photocatalytic performance by enhancing electron-hole pair separation, electronic transmission efficiency, and interfacial charge transfer. These findings contribute to the synthesis of efficient visible-light-driven Bi-based photocatalysts and to the understanding of photocatalytic degradation reactions.
资助项目	Natural Science Foundation of China[21706295] ; Natural Science Foundation of China[51525805] ; Natural Science Foundation of Guangdong Province[2017A030313055] ; Natural Science Foundation of Guangdong Province[2020A1515010798] ; Pearl River S&T Nova Program of Guangzhou[201906010024] ; Innovative School Project of Guangzhou University[2823010936] ; Graduate student innovation ability training scheme of Guangzhou University[2018GDJC-M02]
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000530034100018
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10936]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Huang, Yongchao; Liu, Hong
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Guangzhou Univ, Inst Environm Res Greater Bay Area, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ,Guangzhou Key Lab Clean Energy & Mat, Guangzhou 510006, Peoples R China
推荐引用方式 GB/T 7714	Li, Kunshan,Lu, Xinyu,Zhang, You,et al. Bi3TaO7/Ti3C2 heterojunctions for enhanced photocatalytic removal of water-borne contaminants[J]. ENVIRONMENTAL RESEARCH,2020,185:9.
APA	Li, Kunshan,Lu, Xinyu,Zhang, You,Liu, Kuiliang,Huang, Yongchao,&Liu, Hong.(2020).Bi3TaO7/Ti3C2 heterojunctions for enhanced photocatalytic removal of water-borne contaminants.ENVIRONMENTAL RESEARCH,185,9.
MLA	Li, Kunshan,et al."Bi3TaO7/Ti3C2 heterojunctions for enhanced photocatalytic removal of water-borne contaminants".ENVIRONMENTAL RESEARCH 185(2020):9.