Structural Incorporation of Manganese into Goethite and Its Enhancement of Pb(II) Adsorption
文献类型：期刊论文
| 作者 | Liu, H; Lu, XC; Li, M; Zhang, LJ; Pan, C; Zhang, R; Li, J; Xiang, WL |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 52期号:8页码:4719-4727 |
| 关键词 | Ray-absorption Spectroscopy Mn-substituted Goethite Total Electron Yield Alpha-feooh Iron-oxide Surface Complexation Synthetic Goethite Aluminum Substitution Doped Goethite Probing Depth |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.7b05612 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Natural goethite (alpha-FeOOH) commonly accommodates various metal elements by substituting for Fe, which greatly alters the surface reactivity of goethite. This study discloses the enhancement of Mn-substitution for the Pb(2+)adsorption capacity of goethite. The incorporated Mn in the synthesized goethite presents as Mn(III) and causes a slight decrease in the a and c of the unit cell parameters and an observable increase in the b direction due to the Jahn-Teller effect of the Mn(III)O-6 octahedra. With the Mn content increasing, the particle size decreases gradually, and the surface clearly becomes roughened. The Pb2+ adsorption capacity of goethite is observably enhanced by Mn substitution due to the modified surface complexes. And the increased surface-area-normalized adsorption capacity for Mn-substituted goethite indicated that the enhancement of Pb adsorption is not only attributed to the increase of surface area but also to the change of binding complexes. Extended X-ray absorption fine structure (EXAFS) analysis indicates that the binding structures of Pb2+ on goethite presents as edge-sharing complexes with a regular RPb-Fe = 3.31 angstrom. In the case of Mn-goethite, Pb2+ is also bound with the Mn surface site on the edge-sharing complex with a larger RPb-Fe = 3.47 angstrom. The mechanism for enhancing Pb2+ adsorption on Mn-goethite can be interpreted as the preferred Pb2+ binding on the Mn site of Mn-goethite surface. In a summary, the Mn-goethite has great potential for material development in environmental remediation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000430515400026 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/29143]  |
| 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.Liu, H 2.Lu, XC 3.Li, M 4.Zhang, LJ 5.Pan, C 6.Zhang, R 7.Li, J 8.Xiang, WL |
| 推荐引用方式 GB/T 7714 | Liu, H,Lu, XC,Li, M,et al. Structural Incorporation of Manganese into Goethite and Its Enhancement of Pb(II) Adsorption[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(8):4719-4727. |
| APA | Liu, H.,Lu, XC.,Li, M.,Zhang, LJ.,Pan, C.,...&Xiang, WL.(2018).Structural Incorporation of Manganese into Goethite and Its Enhancement of Pb(II) Adsorption.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(8),4719-4727. |
| MLA | Liu, H,et al."Structural Incorporation of Manganese into Goethite and Its Enhancement of Pb(II) Adsorption".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.8(2018):4719-4727. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。