Composite ZIF-8 with CQDs for boosting visible-light-driven photocatalytic removal of NO

doi:10.1016/j.jallcom.2019.06.086

IEECAS OpenIR > 粉尘与环境研究室

	Composite ZIF-8 with CQDs for boosting visible-light-driven photocatalytic removal of NO
	Wei, Xiaoyan 1,2; Wang, Yawen 1; Huang, Yu 2; Fan, Caimei 1
通讯作者	Wang, Yawen(wangyawen@tyut.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
	2019-09-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	802 页码:467-476
摘要	Metal-organic frameworks (MOFs) with the advantage of high surface area are attracting growing concern in photocatalysis, but the limitations of no visible light response and low carrier migration efficiency also exist in MOFs materials. Carbon quantum dots (CQDs) with unique optical properties are a novel class of carbon nanomaterials, which have attracted extensive attention in the field of photocatalysis. In this work, compositing with CQDs for realizing MOFs visible-light photocatalytic NO performance was elucidated. We synthesized CQDs/ZIF-8 composite via a simple surface soaking approach, and the 0.5-CQDs/ZIF-8 composite showed the best removal performance of NOx which was -43%. The effect of CQDs on boosting visible-light photocatalytic activity of ZIF-8 was explored based on the photocurrent test, electrochemical impedance spectra, activity tests and radical trapping experiment under different monochromatic light irradiation, up-conversion photoluminescence spectra of CQDs, and electron spin resonance spectroscopy measurement. These results demonstrated compositing with CQDs is an effective way to boost the visible-light photocatalytic activity of ZIF-8, in which CQDs improves the visible light utilization and carrier separation efficiency. Apart of that, the results fully proved that the up-conversion effect indeed played a role in driving ZIF-8 into visible light response owing to the still working holes (h(+)) under 500 nm of monochromatic light irradiation. The possible NOx removal mechanism over CQDs/ZIF-8 composite was then proposed in the work. (C) 2019 Published by Elsevier B.V.
关键词	CQDs/ZIF-8 Photocatalysis Visible light NOx Up-conversion
DOI	10.1016/j.jallcom.2019.06.086
关键词[WOS]	METAL-ORGANIC FRAMEWORKS ; ZEOLITIC IMIDAZOLATE FRAMEWORK-8 ; CARBON QUANTUM DOTS ; SELF-SACRIFICIAL SYNTHESIS ; HIGH-PERFORMANCE ; GRAPHENE OXIDE ; CO2 REDUCTION ; EFFICIENT ; DEGRADATION ; NANOCRYSTALS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[21303116] ; National Natural Science Foundation of China[21676178] ; National Natural Science Foundation of China[21706179] ; Outstanding young academic leaders of Shanxi Provincial Department of Education[154010141-s] ; Hundred Talent Program of the Chinese Academy of Sciences
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
项目资助者	National Natural Science Foundation of China ; Outstanding young academic leaders of Shanxi Provincial Department of Education ; Hundred Talent Program of the Chinese Academy of Sciences
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000474567000053
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：52[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/361006/13758
专题	粉尘与环境研究室
通讯作者	Wang, Yawen; Huang, Yu
作者单位	1.Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wei, Xiaoyan,Wang, Yawen,Huang, Yu,et al. Composite ZIF-8 with CQDs for boosting visible-light-driven photocatalytic removal of NO[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,802:467-476.
APA	Wei, Xiaoyan,Wang, Yawen,Huang, Yu,&Fan, Caimei.(2019).Composite ZIF-8 with CQDs for boosting visible-light-driven photocatalytic removal of NO.JOURNAL OF ALLOYS AND COMPOUNDS,802,467-476.
MLA	Wei, Xiaoyan,et al."Composite ZIF-8 with CQDs for boosting visible-light-driven photocatalytic removal of NO".JOURNAL OF ALLOYS AND COMPOUNDS 802(2019):467-476.