Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater
文献类型：期刊论文
| 作者 | Tian, Kaixun2; Xiao, Jing2; Shen, Jian2; Zhao, He1 |
| 刊名 | WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 20期号:3页码:828-836 |
| 关键词 | adsorption arsenic (V) removal electronic configurations iron oxide hydrate |
| ISSN号 | 1606-9749 |
| DOI | 10.2166/ws.2019.197 |
| 英文摘要 | In the past few decades, heavy metal pollution, such as As(V), has become an important issue for aqueous environment safety. For reasons of practical feasibility and cost-effectiveness, adsorption has been widely used in the water treatment and reuse community, with rapid development of adsorbents. However, the precise control of the electronic configuration of the adsorbents' sites to enhance adsorption performance is largely unexplored. In this study, to demonstrate the effect of electronic configuration on adsorption performance, we synthesized granular activated carbon (GAC) supported Fe-based hydroxides adsorbents by varying the valence state in transition metals. Furthermore, the adsorbents are characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) to identify surface structure and morphological properties. Adsorptive performance studies show that the adsorption capacity and arsenic removal efficiency of Fe(II)-GAC are twice those of Fe(III)-GAC, as a matter of charge transfer between adsorbents and cationic pollution (such as Fe-O and As species). Finally, PO43- was selected as a control sample to confirm the rationality of the removal mechanism. Collectively, fine-tuning of the electronic configuration from charge transfer will not only benefit heavy metal removal channels, but also supply fundamental information for adsorbents design for organics removal. |
| WOS关键词 | ARSENIC REMOVAL ; AQUEOUS-SOLUTION ; FERRIC-OXIDE ; WATER ; FE ; PB |
| 资助项目 | National Natural Science Foundation of China[21707023] ; New Faculty Start-Up Funding from Xiangtan University[18QDZ16] ; Provincial Key Research and Development Plan of Hunan Province[2018SK2034] ; Provincial Key Research and Development Plan of Hunan Province[2018SK2018] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000537271000007 |
| 出版者 | IWA PUBLISHING |
| 资助机构 | National Natural Science Foundation of China ; New Faculty Start-Up Funding from Xiangtan University ; Provincial Key Research and Development Plan of Hunan Province |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/40995]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Shen, Jian |
| 作者单位 | 1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China 2.Xiangtan Univ, Dept Environm & Resources, Hunan Engn Lab Complex Heavy Met Wastewater Purif, Xiangtan 411105, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Kaixun,Xiao, Jing,Shen, Jian,et al. Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater[J]. WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,2020,20(3):828-836. |
| APA | Tian, Kaixun,Xiao, Jing,Shen, Jian,&Zhao, He.(2020).Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater.WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,20(3),828-836. |
| MLA | Tian, Kaixun,et al."Tailoring electronic configurations in adsorptive sites for the enhancement of As(V) removal from groundwater".WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY 20.3(2020):828-836. |
入库方式： OAI收割
来源：过程工程研究所
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