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

文献类型：期刊论文

作者Wei, Xiaoyan1,2; Wang, Yawen2; Huang, Yu1; Fan, Caimei2
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2019-09-25
卷号802页码:467-476
ISSN号0925-8388
关键词CQDs/ZIF-8 Photocatalysis Visible light NOx Up-conversion
DOI10.1016/j.jallcom.2019.06.086
通讯作者Wang, Yawen(wangyawen@tyut.edu.cn) ; Huang, Yu(huangyu@ieecas.cn)
英文摘要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.
WOS关键词METAL-ORGANIC FRAMEWORKS ; ZEOLITIC IMIDAZOLATE FRAMEWORK-8 ; CARBON QUANTUM DOTS ; SELF-SACRIFICIAL SYNTHESIS ; HIGH-PERFORMANCE ; GRAPHENE OXIDE ; CO2 REDUCTION ; EFFICIENT ; DEGRADATION ; NANOCRYSTALS
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
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000474567000053
资助机构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
源URL[http://ir.ieecas.cn/handle/361006/13757]  
专题地球环境研究所_粉尘与环境研究室
通讯作者Wang, Yawen; Huang, Yu
作者单位1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
2.Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Shanxi, 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.

入库方式： OAI收割

来源：地球环境研究所

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