A dual-reaction-center Fenton-like process on -C N-Cu linkage between copper oxides and defect-containing g-C3N4 for efficient removal of organic pollutants

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	A dual-reaction-center Fenton-like process on -C N-Cu linkage between copper oxides and defect-containing g-C3N4 for efficient removal of organic pollutants
	Lyu, Lai; Jiang, Ning; Hu, Chun; Zhang, Lili; Yu, Guangfei
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2018-09-28
卷号	6 期号:36 页码:17819-17828
ISSN号	2050-7488
文献子类	Article
英文摘要	Copper oxides were supported on the surface of defect-containing g-C3N4 (d-g-C3N4-Cu) by alkalization and hydrothermal methods and characterized using a variety of techniques and density functional theory (DFT) calculations. It was verified that dual reaction centers were constructed by the complexation of -C-1 N-1-Cu linkages between Cu of copper oxides (CuOx) and cyano (-C-1 N-1) groups of the side chain in the tri-s-triazine ring of d-g-C3N4, which formed electron-rich centers around Cu sites and electron-poor centers around C-1 sites. Based on the experimental results, it was established that the Fenton-like process took place with H2O2 being mainly reduced to hydroxyl radicals (OH) by the electrons from electron-rich Cu centers, while both OH- and pollutants were adsorbed on the C-1 sites, and could be oxidized to donate electrons to Cu centers by electron transfer of pi -> Cu in -C-1 N-1-Cu, maintaining charge balance on the d-g-C3N4-Cu. Thus, the catalyst was highly efficient for the degradation of various refractory organic pollutants in water of pH from 3 to 10; moreover, higher pH resulted in higher reaction efficiency because more adsorbed OH- at C-1 sites produced more (OH)-O-center dot. Our findings indicate that the dual-reaction-center Fenton-like process is very promising for environmental remediation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41310]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Lyu, Lai,Jiang, Ning,Hu, Chun,et al. A dual-reaction-center Fenton-like process on -C N-Cu linkage between copper oxides and defect-containing g-C3N4 for efficient removal of organic pollutants[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(36):17819-17828.
APA	Lyu, Lai,Jiang, Ning,Hu, Chun,Zhang, Lili,&Yu, Guangfei.(2018).A dual-reaction-center Fenton-like process on -C N-Cu linkage between copper oxides and defect-containing g-C3N4 for efficient removal of organic pollutants.JOURNAL OF MATERIALS CHEMISTRY A,6(36),17819-17828.
MLA	Lyu, Lai,et al."A dual-reaction-center Fenton-like process on -C N-Cu linkage between copper oxides and defect-containing g-C3N4 for efficient removal of organic pollutants".JOURNAL OF MATERIALS CHEMISTRY A 6.36(2018):17819-17828.