Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water

doi:10.1016/j.envpol.2019.05.126

	Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water
	Pei, Zhiguo 2,3; Ma, Jie 1,2; Li, Lingyun 5; Xie, Jieli 2; Wang, Lingqing 4; Wen, Bei 2; Zhang, Shuzhen 2; Xing, Baoshan 3
刊名	ENVIRONMENTAL POLLUTION
	2019-09-01
卷号	252 页码:689-696
关键词	Reduced graphene oxide Copper 2-Naphthol Mediation Oxidation Reactive oxygen species
ISSN号	0269-7491
DOI	10.1016/j.envpol.2019.05.126
通讯作者	Pei, Zhiguo(peizg@rcees.ac.cn)
英文摘要	Reduced graphene oxide (rGO) is one of the most widely used carbon nanomaterials. When it is released into the environment, rGO can markedly affect the transformation of many pollutants, and change their fate and risk. In this work, the synergetic effects of rGO and Cu(II) on the oxidation of 2-naphthol were examined in water in the dark. It was found that the coexistence of rGO and Cu(II) significantly promoted the oxidation of 2-naphthol. Corresponding products were identified as the coupling oligomers of 2-naphthol (dimer, trimer and tetramer) and hydroxylated compounds (OH-2-naphthol, OH-dimer, di-OH-dimer and naphthoquinone derivatives). In the oxidation reaction, rGO played dual roles, i.e. adsorbent and electron-transfer mediator. rGO firstly adsorbed Cu(II) and 2-naphthol on its surface, and then transferred electrons from 2-naphthol to Cu(II) to yield 2-naphthol radicals and Cu(I). 2-Naphthol radicals coupled to each other to form different oligomers of 2-naphthol. Cu(I) was re-oxidized back to Cu(II) by dissolved oxygen, which sustained the continuous oxidation of 2-naphthol. During the autoxidation of Cu(I), reactive oxygen species were generated, which further reacted with 2-naphthol to form hydroxylated products. These findings provide new insights into the risk assessment of rGO and 2-naphthol in aquatic environments. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[21537005] ; National Natural Science Foundation of China[41771507] ; National Natural Science Foundation of China[21477145] ; National Natural Science Foundation of China[21876188] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB14020202]
WOS关键词	WALLED CARBON NANOTUBES ; FEW-LAYER GRAPHENE ; CATALYTIC-OXIDATION ; HYDROGEN-PEROXIDE ; TRANSFORMATION ; ADSORPTION ; COPPER ; OXYGEN ; NANOMATERIALS ; REDUCTION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000483005500073
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/69629]
专题	中国科学院地理科学与资源研究所
通讯作者	Pei, Zhiguo
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China 3.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs China, Key Lab Vegetables Qual & Safety Control, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Pei, Zhiguo,Ma, Jie,Li, Lingyun,et al. Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water[J]. ENVIRONMENTAL POLLUTION,2019,252:689-696.
APA	Pei, Zhiguo.,Ma, Jie.,Li, Lingyun.,Xie, Jieli.,Wang, Lingqing.,...&Xing, Baoshan.(2019).Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water.ENVIRONMENTAL POLLUTION,252,689-696.
MLA	Pei, Zhiguo,et al."Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water".ENVIRONMENTAL POLLUTION 252(2019):689-696.