Photocatalytic degradation of 2,4,6-trichlorophenol over g-C3N4 under visible light irradiation

doi:10.1016/j.cej.2012.12.033

	Photocatalytic degradation of 2,4,6-trichlorophenol over g-C3N4 under visible light irradiation
	Ji, Huanhuan 1,2; Chang, Fei 3; Hu, Xuefeng1 ; Qin, Wei1 ; Shen, Jiaowen 4
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
	2013-02-15
卷号	218 页码:183-190
关键词	C3n4 Photocatalysis Superoxide Radical 2 Vb Holes 4 6-tcp
DOI	10.1016/j.cej.2012.12.033
产权排序	[Ji, Huanhuan; Hu, Xuefeng; Qin, Wei] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China; [Ji, Huanhuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chang, Fei] Shanghai Univ Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China; [Shen, Jiaowen] Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China
通讯作者	Hu, XF (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China. xfhu@yic.ac.cn
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	Graphitic carbon nitride (g-C3N4) was synthesized by directly thermal condensation of dicyandiamide and characterized by XRD, XPS, SEM, TEM and FT-IR. Then the as-prepared catalyst was employed to degrade priority pollutant 2,4,6-trichlorophenol (2,4,6-TCP) under visible light irradiation (lambda > 420 nm). The 2,4,6-TCP could be completely mineralized over g-C3N4, and the pseudo-first-order rate constant for 10(-4) M 2,4,6-TCP degradation was 0.70 h(-1) in the presence of 1 g/L catalyst. O-center dot(2)-/(OOH)-O-center dot was identified as the most important reactive species contributing to 2,4,6-TCP degradation in air. Meanwhile, valence band holes (VB holes) of g-C3N4 was observed to play important roles for the degradation of 2,4,6-TCP at N-2 gas ambient when metal ions were added as electron acceptors. The possible degradation pathway of 2,4,6-TCP was proposed. (C) 2012 Elsevier B.V. All rights reserved.; Graphitic carbon nitride (g-C3N4) was synthesized by directly thermal condensation of dicyandiamide and characterized by XRD, XPS, SEM, TEM and FT-IR. Then the as-prepared catalyst was employed to degrade priority pollutant 2,4,6-trichlorophenol (2,4,6-TCP) under visible light irradiation (lambda > 420 nm). The 2,4,6-TCP could be completely mineralized over g-C3N4, and the pseudo-first-order rate constant for 10(-4) M 2,4,6-TCP degradation was 0.70 h(-1) in the presence of 1 g/L catalyst. O-center dot(2)-/(OOH)-O-center dot was identified as the most important reactive species contributing to 2,4,6-TCP degradation in air. Meanwhile, valence band holes (VB holes) of g-C3N4 was observed to play important roles for the degradation of 2,4,6-TCP at N-2 gas ambient when metal ions were added as electron acceptors. The possible degradation pathway of 2,4,6-TCP was proposed. (C) 2012 Elsevier B.V. All rights reserved.
文章类型	Article
资助机构	National Natural Science Foundation of China [41076040, 20807036]; Yantai Science & Technology Bureau [2010160]; Training Program for Young Teachers in Shanghai Colleges and Universities [egd11008] ; National Natural Science Foundation of China(41076040 ; Yantai Science & Technology Bureau(2010160) ; Training Program for Young Teachers in Shanghai Colleges and Universities(egd11008) ; 20807036)
收录类别	SCI
语种	英语
关键词[WOS]	GRAPHITIC CARBON NITRIDE ; HYDROGEN-PEROXIDE ; TIO2 PHOTOCATALYSIS ; ORGANIC POLLUTANTS ; METHYL-ORANGE ; METAL-FREE ; OXIDATION ; CHLOROPHENOLS ; PHOTODEGRADATION ; PHASE
研究领域[WOS]	Engineering
WOS记录号	WOS:000317255700023
引用统计	被引频次：261[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/133337/6642
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 Zone Environm Proc, Yantai 264003, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghai Univ Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China 4.Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China
推荐引用方式 GB/T 7714	Ji, Huanhuan,Chang, Fei,Hu, Xuefeng,et al. Photocatalytic degradation of 2,4,6-trichlorophenol over g-C3N4 under visible light irradiation[J]. CHEMICAL ENGINEERING JOURNAL,2013,218:183-190.
APA	Ji, Huanhuan,Chang, Fei,Hu, Xuefeng,Qin, Wei,&Shen, Jiaowen.(2013).Photocatalytic degradation of 2,4,6-trichlorophenol over g-C3N4 under visible light irradiation.CHEMICAL ENGINEERING JOURNAL,218,183-190.
MLA	Ji, Huanhuan,et al."Photocatalytic degradation of 2,4,6-trichlorophenol over g-C3N4 under visible light irradiation".CHEMICAL ENGINEERING JOURNAL 218(2013):183-190.

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