Enhanced polarization of electron-poor/rich micro-centers over nZVCu-Cu (II)-rGO for pollutant removal with H2O2

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

	Enhanced polarization of electron-poor/rich micro-centers over nZVCu-Cu (II)-rGO for pollutant removal with H2O2
	Lyu, Lai; Cao, Wenrui; Yu, Guangfei; Yan, Dengbiao; Deng, Kanglan; Lu, Chao; Hu, Chun
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2020-02-05
卷号	383 页码:1-19
关键词	Electron-poor/rich centers Fenton-like process Pollutant conversion Nanoscale zero-valent copper Graphene
ISSN号	0304-3894
英文摘要	Nanoscale zero-valent copper combined with Cu(II)-doped reduced graphene oxide hybrid (nZVC-Cu(II)-rGO) is synthesized through an annealing reduction process, and it shows very high activity and efficiency for removing refractory organic compounds with H2O2. The conversion rate for the organic pollutant in this system is similar to 77 and 13 times higher than that in the graphene oxide (GO) and reduced graphene oxide (rGO) systems, respectively. The characterization shows that nanoscale Cu(0) and Cu(II) are generated on the rGO surface during the annealing process and they are accompanied by the C-O-Cu bonding formation between the rGO substrate and the Cu(II) species in nZVC-Cu(II)-rGO, which induces cation rz interactions on the surface, resulting in the reinforced electron-rich micro-centers formation around the nZVC-enhanced Cu(II) species and electron-poor micro-centers on rGO-aromatic rings. The generation of nanoscale Cu(0) consolidates the polarization of the dual reaction micro-centers and greatly accelerates the electron transfer of the system, thus promoting H2O2 reduction to OH in the electron-rich micro-centers. Pollutants can obviously replace H2O2 as the electron donors of the system and are efficiently oxidized and degraded in the electron-poor micro-centers, with their own electron energy being fully utilized in the nZVC-Cu(II)-rGO Fenton-like system.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45290]
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,Cao, Wenrui,Yu, Guangfei,et al. Enhanced polarization of electron-poor/rich micro-centers over nZVCu-Cu (II)-rGO for pollutant removal with H2O2[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,383:1-19.
APA	Lyu, Lai.,Cao, Wenrui.,Yu, Guangfei.,Yan, Dengbiao.,Deng, Kanglan.,...&Hu, Chun.(2020).Enhanced polarization of electron-poor/rich micro-centers over nZVCu-Cu (II)-rGO for pollutant removal with H2O2.JOURNAL OF HAZARDOUS MATERIALS,383,1-19.
MLA	Lyu, Lai,et al."Enhanced polarization of electron-poor/rich micro-centers over nZVCu-Cu (II)-rGO for pollutant removal with H2O2".JOURNAL OF HAZARDOUS MATERIALS 383(2020):1-19.