Decontamination performance of magnetic graphene oxide towards nickel ions and its underlying mechanism investigation by XAFS
文献类型：期刊论文
| 作者 | Jin, CA; Feng, GF; Linghu, WS; Zhang, LY; Shen, RP; Hu, J; Huang, YY; Zhu, YL; Asiri, AM; Marwani, HM |
| 刊名 | JOURNAL OF MOLECULAR LIQUIDS
 |
| 出版日期 | 2018 |
| 卷号 | 258页码:48-56 |
| 关键词 | Layered Double Hydroxide Nanoscale Zerovalent Iron Absorption Fine-structure Highly Efficient Capture Modeling Techniques Titanate Nanotubes Aqueous-solutions Fulvic-acid Carbonaceous Nanofibers Enhanced Sequestration |
| ISSN号 | 0167-7322 |
| DOI | 10.1016/j.molliq.2018.02.112 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In this paper, the decontamination performance and its underlying mechanism of magnetic graphene oxide (MGO) towards nickel (Ni(II)) ions were studied by batch technique and X-ray absorption fine structure (XAFS) analysis. The conditions that affect Ni(II) uptake, such as reaction time, pH, ionic strength, coexisting ions, humic/fulvic acid (HA/FA) and temperature were investigated by control variable method. The adsorption kinetics indicated that Ni(II) uptake on MGO was corresponded with pseudo-second-order rate equation, and it can reach equilibrium after similar to 4.0 h. The pH had ken speckle effect on Ni(II) uptake, while the ionic strength and coexisting ions had scant impact on Ni(II) uptake. The presence of HA/FA has a positive impact on Ni(II) uptake at pH < 7.0, while has a negative impact on Ni(II) uptake at pH > 7.0. The uptake of Ni(II) can be better described by Langmuir model than Freundlich model. The thermodynamic analysis suggests that Ni(II) uptake was an endothermic and spontaneous behavior. XAFS analysis indicate that Ni(II) was captured on the binding sites of MGO, and some Ni(II) can bind on the surfaces of the iron oxides coated on GO to form strong inner-sphere complexes with good thermodynamic stability. Results of this study indicate that MGO is a significant material for treatment of Ni(II)-bearing effluents and may also be an effective adsorbent for removing other metal ions from wastewater. (C) 2018 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000431932700007 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28958]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Jin, CA 2.Feng, GF 3.Linghu, WS 4.Zhang, LY 5.Shen, RP 6.Hu, J 7.Huang, YY 8.Zhu, YL 9.Asiri, AM 10.Marwani, HM |
| 推荐引用方式 GB/T 7714 | Jin, CA,Feng, GF,Linghu, WS,et al. Decontamination performance of magnetic graphene oxide towards nickel ions and its underlying mechanism investigation by XAFS[J]. JOURNAL OF MOLECULAR LIQUIDS,2018,258:48-56. |
| APA | Jin, CA.,Feng, GF.,Linghu, WS.,Zhang, LY.,Shen, RP.,...&Sheng, J.(2018).Decontamination performance of magnetic graphene oxide towards nickel ions and its underlying mechanism investigation by XAFS.JOURNAL OF MOLECULAR LIQUIDS,258,48-56. |
| MLA | Jin, CA,et al."Decontamination performance of magnetic graphene oxide towards nickel ions and its underlying mechanism investigation by XAFS".JOURNAL OF MOLECULAR LIQUIDS 258(2018):48-56. |
入库方式： OAI收割
来源：上海应用物理研究所
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