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

	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
发表期刊	CATALYSIS TODAY
ISSN	0920-5861
	2014-04-01
卷号	224 页码:34-40
关键词	G-c3n4 Photocatalysis Cr(Vi) Reduction 2 Visible Light 4 6-tcp
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
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. [email protected] ; [email protected]
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.; 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.
文章类型	Article
资助机构	National Natural Science Foundation of China [41076040, 41230858, 21207089]
收录类别	SCI
语种	英语
关键词[WOS]	GRAPHITIC CARBON NITRIDE ; SEMICONDUCTOR PHOTOCATALYSIS ; ENVIRONMENTAL APPLICATIONS ; TIO2 ; PHOTODEGRADATION ; CHROMIUM(VI) ; CATALYSIS ; WATER ; PHOTOREDUCTION ; DEGRADATION
研究领域[WOS]	Chemistry ; Engineering
WOS记录号	WOS:000331724200006
引用统计	被引频次：133[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/6895
专题	中国科学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.

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