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题名:
Simultaneous photocatalytic Cr(VI) reduction and 2,4,6-TCP oxidation over g-C3N4 under visible light irradiation
作者: Hu, XueFeng(胡学锋)1; Ji, Huanhuan1; Chang, Fei2; Luo, Yongming1
刊名: CATALYSIS TODAY
ISSN号: 0920-5861
出版日期: 2014-04-01
卷号: 224, 页码:34-40
关键词: g-C3N4 ; Photocatalysis ; 2,4,6-TCP ; Cr(VI) reduction ; Visible light
学科分类: Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
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. xfhu@yic.ac.cn ; ymluo@yic.ac.cn
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.
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
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000331724200006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/6895
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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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

Recommended Citation:
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.
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