Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation
文献类型：期刊论文
| 作者 | Hayat, Tasawar; Alsaedi, Ahmed; Huang, Yuying; Sheng, Guodong; Huang, Chengcai; Chen, Guohe; Sheng, Jiang; Ren, Xuemei; Hu, Baowei; Ma, Jingyuan |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2018 |
| 卷号 | 233页码:125-131 |
| 关键词 | Absorption Fine-structure Layered Double Hydroxide Arsenate Co-sorption Enhanced Sequestration Carbon Nanotubes Aqueous-solution Water Interface Heavy-metal Goethite Nanosheets |
| 英文摘要 | Graphene oxide (GO) may strongly interact with toxic metal ions and mineral particles upon release into the soil environment. We evaluated the mutual effects between GO and Ni (Ni(II)) with regard to their adsorption and co-adsorption on two minerals (goethite and hematite) in aqueous phase. Results indicated that GO and Ni could mutually facilitate the adsorption of each other on both goethite and hematite over a wide pH range. Addition of Ni promoted GO co-adsorption mainly due to the increased positive charge of minerals and cation it interactions, while the presence of GO enhanced Ni co-adsorption predominantly due to neutralization of positive charge and strong interaction with oxygen containing functional groups on adsorbed GO. Increasing adsorption of GO and Ni on minerals as they coexist may thus reduce their mobility in soil. Extended X-ray absorption fine structure (EXAFS) spectroscopy data revealed that GO altered the microstructure of Ni on minerals, i.e., Ni formed edge-sharing surface species (at RNi-Fe similar to 3.2 angstrom) without GO, while a GO-bridging ternary surface complexes (at RNi-C similar to 2.49 angstrom A and RNi-Fe similar to 4.23 angstrom) was formed with GO. These findings improved the understanding of potential fate and toxicity of GO as well as the partitioning processes of Ni ions in aquatic and soil environments. (C) 2017 Elsevier Ltd. All rights reserved. |
| 学科主题 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/16837]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Hayat, Tasawar,Alsaedi, Ahmed,Huang, Yuying,et al. Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation[J]. ENVIRONMENTAL POLLUTION,2018,233:125-131. |
| APA | Hayat, Tasawar.,Alsaedi, Ahmed.,Huang, Yuying.,Sheng, Guodong.,Huang, Chengcai.,...&Wang, Xiangke.(2018).Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation.ENVIRONMENTAL POLLUTION,233,125-131. |
| MLA | Hayat, Tasawar,et al."Adsorption and co-adsorption of graphene oxide and Ni(II) on iron oxides: A spectroscopic and microscopic investigation".ENVIRONMENTAL POLLUTION 233(2018):125-131. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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