EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2
文献类型：期刊论文
| 作者 | Li, XL; Pan, G; Qin, YW; Hu, TD; Wu, ZY; Xie, YN |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2004 |
| 卷号 | 271期号:1页码:35-40 |
| 关键词 | EXAFS Zn manganese oxides delta-MnO2 gamma-MnOOH metastable adsorption linkage mode adsorption reversibility |
| 英文摘要 | Microscopic structures of Zn(II) adsorbed at delta-MnO2-water interfaces were studied using extended X-ray absorption fine structure (EXAFS) spectroscopy. In a 0.1 M NaNO3 solution of pH 5.50, hydrous Zn(II) was adsorbed onto the solid surface in the form of octahedral coordination. Adsorbed octahedral Zn(II) was located above and below the vacancy sites of delta-MnO2. Each Zn was coordinated on one side to H2O molecules forming an H2O sheet and on the other side to oxygen atoms shared with layer MnO6 octahedra forming a corner-sharing octahedral interlayer complex. The average Zn-O and Zn-Mu distances were 2.07 +/- 0.01 and 3.52 +/- 0.01 Angstrom, respectively. Macroscopic adsorption-desorption isotherms showed that, in contrast to that of the Zn-gamma-MnOOH system, adsorption of Zn(II) on delta-MnO2 was highly reversible. EXAFS results indicated that the highly reversible adsorption was due to the weak adsorption mode of the corner-sharing linkage between the adsorbate and adsorbent polyhedra. (C) 2003 Elsevier Inc. All rights reserved. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000188778600005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23525]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, XL,Pan, G,Qin, YW,et al. EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2004,271(1):35-40. |
| APA | Li, XL,Pan, G,Qin, YW,Hu, TD,Wu, ZY,&Xie, YN.(2004).EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2.JOURNAL OF COLLOID AND INTERFACE SCIENCE,271(1),35-40. |
| MLA | Li, XL,et al."EXAFS studies on adsorption-desorption reversibility at manganese oxide-water interfaces II. Reversible adsorption of zinc on delta-MnO2".JOURNAL OF COLLOID AND INTERFACE SCIENCE 271.1(2004):35-40. |
入库方式： OAI收割
来源：生态环境研究中心
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