| Synergetic mediation of reduced graphene oxide and Cu(II) on the oxidation of 2-naphthol in water | |
Pei, Zhiguo4 ; Ma, Jie1; Li, Lingyun2; Xie, Jieli; Wang, Lingqing3; Wen, Bei; Zhang, Shuzhen; Xing, Baoshan4
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| 2019-09-01 | |
| Source Publication | ENVIRONMENTAL POLLUTION
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| ISSN | 0269-7491 |
| Volume | 252Pages:689-696 |
| Abstract | 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. |
| Department | 环境化学与生态毒理学国家重点实验室 |
| Keyword | Reduced graphene oxide Copper 2-Naphthol Mediation Oxidation Reactive oxygen species |
| Document Type | 期刊论文 |
| Identifier | http://ir.rcees.ac.cn/handle/311016/42600 |
| Collection | 环境化学与生态毒理学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs China, Key Lab Vegetables Qual & Safety Control, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA |
| Recommended Citation 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. |
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| Synergetic mediation（1410KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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