Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation
	Hu, Xuefeng1 ; Ji, Huanhuan 1; Chang, Fei 2; Luo, Yongming1
刊名	CATALYSIS TODAY
	2014-04-01
卷号	224 页码:34-40
关键词	g-C3N4 Photocatalysis 2 Cr(VI) reduction Visible light 4 6-TCP
ISSN号	0920-5861
通讯作者	Hu, XF (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China. xfhu@yic.ac.cn ; ymluo@yic.ac.cn
产权排序	[Hu, Xuefeng; Ji, Huanhuan; Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Chang, Fei] Shanghai Univ Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
中文摘要	In this study, a rapid reduction of Cr(VI) and degradation of 2,4,6-trichlorophenol (2,4,6-TCP) in a simultaneous manner was reported through the catalysis of g-C3N4 under visible light (lambda > 420 nm) irradiation. The effects of initial concentration of reactants, dissolved O-2 and pH value were investigated systematically. It indicated that, under the optimized concentration, the Cr(VI) reduction and 2,4,6-TCP oxidation could be accomplished in couple of hours in the presence of g-C3N4. And also, the O-2 involvement and low pH value were able to significantly improve the removal rate of Cr(VI) and 2,4,6-TCP. In addition, the reaction mechanism was investigated through monitoring the reduced states of Cr(VI) and active oxygen intermediates formed during photoreaction by ESR and XPS, as well as determining the degradation products of 2,4,6-TCP by HPLC-MS. The results supported that the redox reactions of Cr(VI) and 2,4,6-TCP can be performed simultaneously via a synergistic oxidation-reduction mechanism in the presence of g-C3N4 under visible light irradiation. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要	In this study, a rapid reduction of Cr(VI) and degradation of 2,4,6-trichlorophenol (2,4,6-TCP) in a simultaneous manner was reported through the catalysis of g-C3N4 under visible light (lambda > 420 nm) irradiation. The effects of initial concentration of reactants, dissolved O-2 and pH value were investigated systematically. It indicated that, under the optimized concentration, the Cr(VI) reduction and 2,4,6-TCP oxidation could be accomplished in couple of hours in the presence of g-C3N4. And also, the O-2 involvement and low pH value were able to significantly improve the removal rate of Cr(VI) and 2,4,6-TCP. In addition, the reaction mechanism was investigated through monitoring the reduced states of Cr(VI) and active oxygen intermediates formed during photoreaction by ESR and XPS, as well as determining the degradation products of 2,4,6-TCP by HPLC-MS. The results supported that the redox reactions of Cr(VI) and 2,4,6-TCP can be performed simultaneously via a synergistic oxidation-reduction mechanism in the presence of g-C3N4 under visible light irradiation. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	GRAPHITIC CARBON NITRIDE ; SEMICONDUCTOR PHOTOCATALYSIS ; ENVIRONMENTAL APPLICATIONS ; TIO2 ; PHOTODEGRADATION ; CHROMIUM(VI) ; CATALYSIS ; WATER ; PHOTOREDUCTION ; DEGRADATION
收录类别	SCI
资助信息	National Natural Science Foundation of China [41076040, 41230858, 21207089]
原文出处	http://dx.doi.org/10.1016/j.cattod.2013.11.038
语种	英语
WOS记录号	WOS:000331724200006
公开日期	2014-07-08
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/6895]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China 2.Shanghai Univ Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xuefeng,Ji, Huanhuan,Chang, Fei,et al. Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation[J]. CATALYSIS TODAY,2014,224:34-40.
APA	Hu, Xuefeng,Ji, Huanhuan,Chang, Fei,&Luo, Yongming.(2014).Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation.CATALYSIS TODAY,224,34-40.
MLA	Hu, Xuefeng,et al."Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation".CATALYSIS TODAY 224(2014):34-40.