Oxidation of Arsenite by Epoxy Group on Reduced Graphene Oxide/Metal Oxide Composite Materials
文献类型：期刊论文
| 作者 | Shi, Qiantao; Yan, Li; Jing, Chuanyong |
| 刊名 | ADVANCED SCIENCE
 |
| 出版日期 | 2020-11 |
| 卷号 | 7期号:21页码:1-11 |
| 关键词 | adsorption arsenic graphene oxidation |
| 英文摘要 | Reduced graphene oxide/metal oxide (rGO/MO) hybrid has been widely used as a catalyst, while dissolved oxygen or radicals are generally recognized as the oxidant. This study finds that the adsorbed arsenite (As(III)) on rGO/MO is oxidized to arsenate (As(V)) in the absence of other oxidants or radicals. The oxidation of As(III) is observed on varying rGO/MOs, including rGO/MOs composited of different types of reduced graphene oxide (rGO) and metal oxide. The epoxy group on rGO acts as the oxidant, evidenced by the significant correlation between the consumption of epoxy group and oxidation of As(III). Meanwhile, metal oxide provides adsorption sites for As(III) during the adsorption-oxidation process. Based on a combination of spectroscopic measurements and computational calculation, a possible pathway for As(III) oxidation by rGO/MO is proposed: the oxygen atom in the epoxy group is bonded to the adsorbed (AsO3)-O-III, which is consequently oxidized to (AsO4)-O-V. Overall, this study proves the role of rGO/MO as an oxidant, which opens a new perspective on future studies using rGO/MO as a catalyst for the oxidation reaction. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44767]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Shi, Qiantao,Yan, Li,Jing, Chuanyong. Oxidation of Arsenite by Epoxy Group on Reduced Graphene Oxide/Metal Oxide Composite Materials[J]. ADVANCED SCIENCE,2020,7(21):1-11. |
| APA | Shi, Qiantao,Yan, Li,&Jing, Chuanyong.(2020).Oxidation of Arsenite by Epoxy Group on Reduced Graphene Oxide/Metal Oxide Composite Materials.ADVANCED SCIENCE,7(21),1-11. |
| MLA | Shi, Qiantao,et al."Oxidation of Arsenite by Epoxy Group on Reduced Graphene Oxide/Metal Oxide Composite Materials".ADVANCED SCIENCE 7.21(2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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