Biocompatible FeOOH-Carbon quantum dots nanocomposites for gaseousNOx removal under visible light: Improved charge separation and Highselectivity

doi:10.1016/j.jhazmat.2018.04.071

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Biocompatible FeOOH-Carbon quantum dots nanocomposites for gaseousNOx removal under visible light: Improved charge separation and Highselectivity
	Cao, JJ(Cao, Junji)1,2; Wingkei Ho 4; Gao, YX(Gao, Yuxia)2; Zhang, Q(Zhang, Qian)1,2; Zhang, YF(Zhang, Yufei)1,2; Huang, Yu ; Shun Cheng Lee 3; Huang, Y(Huang, Yu)1,2
刊名	Journal of Hazardous Materials
	2018-04-27
卷号	354 期号:2018 页码:54-62
关键词	Nox Purification Cqds/feooh Photocatalyst Dft Calculation Charge Carrier Separation Degradation Mechanism
DOI	10.1016/j.jhazmat.2018.04.071
文献子类	期刊论文
英文摘要	Development of biocompatible photocatalysts with improved charge separation and high selectivity is essential for effective removal of air pollutants. Iron-containing catalysts have attracted extensive attention due to their low-toxicity and high natural abundance. Here, carbon quantum dots (CQDs) modified FeOOH nanocomposites fabricated using a facile hydrothermal route showed enhanced NO removal efficiency (22%) compared to pure FeOOH. Moreover, generation of toxic NO2 intermediates was significantly inhibited using the nanocomposites, demonstrating high selectivity for final nitrate formation. Photo-electrochemical results showed that both charge separation and transfer efficiency were significantly improved by CQDs addition, and the lifetime of photo-generated carriers was increased eventually. Density functional theory calculations further elucidated that the suppressed recombination of photo-induced electron-hole pairs was due to enhanced electron migration from the FeOOH to CQDs. A NO degradation mechanism was proposed based on detection of the reactive oxygen species using electron paramagnetic spectroscopy. In addition, the nanocomposite showed good biocompatibility and low cytotoxity, ensuring minimal environmental impact for potential application in large-scale.
项目编号	2016BBBMBYFA0203000 ; SKLLQGPY1605 ; 41401567 ; 41573138
语种	英语
资助机构	the National Key Research and Development Program of China ; the National Key Research and Development Program of China ; State Key Lab of Loess and Quaternary Geology ; State Key Lab of Loess and Quaternary Geology ; the NationalScience Foundation of China ; the NationalScience Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5256]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Huang, Yu
作者单位	1.State Key Lab of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China 2.Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China 3.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China 4.Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
推荐引用方式 GB/T 7714	Cao, JJ,Wingkei Ho,Gao, YX,et al. Biocompatible FeOOH-Carbon quantum dots nanocomposites for gaseousNOx removal under visible light: Improved charge separation and Highselectivity[J]. Journal of Hazardous Materials,2018,354(2018):54-62.
APA	Cao, JJ.,Wingkei Ho.,Gao, YX.,Zhang, Q.,Zhang, YF.,...&Huang, Y.(2018).Biocompatible FeOOH-Carbon quantum dots nanocomposites for gaseousNOx removal under visible light: Improved charge separation and Highselectivity.Journal of Hazardous Materials,354(2018),54-62.
MLA	Cao, JJ,et al."Biocompatible FeOOH-Carbon quantum dots nanocomposites for gaseousNOx removal under visible light: Improved charge separation and Highselectivity".Journal of Hazardous Materials 354.2018(2018):54-62.