Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part A. Adsorption capacity and mechanism
文献类型：期刊论文
| 作者 | R. H. Li ; Q. Li ; S. Gao ; J. K. Shang |
| 刊名 | Chemical Engineering Journal
 |
| 出版日期 | 2012 |
| 卷号 | 185页码:127-135 |
| 关键词 | Hydrous cerium oxide nanoparticles Exceptional arsenic removal ability Adsorption mechanism granular ferric hydroxide titanium-dioxide removal adsorbent oxidation groundwater kinetics sorption water ceo2 |
| ISSN号 | 1385-8947 |
| 中文摘要 | Hydrous cerium oxide (HCO) nanoparticles were synthesized by a simple precipitation process, and their arsenic adsorption performances were investigated. Due to their high specific surface area (198 m(2)/g) and the presence of high affinity surface hydroxyl groups, HCO nanoparticles demonstrated exceptional adsorption properties in terms of adsorption capacity and kinetics on both As(III) and As(V). At neutral pH, the arsenic adsorption capacity of HCO reached over 170 mg/g for As(III) and 107 mg/g for As(V). Even at very low equilibrium arsenic concentrations, the amount of As(III) and As(V) adsorbed by HCO nanoparticles was still over 13 mg/g at 10 mu g/L and over 40 mg/g at 50 mu g/L, which are higher than the arsenic adsorption capacity for most commercial adsorbents. Over a wide pH range from 3 to 11, HCO nanoparticles could readily remove As(III) by adsorption, which was not observed previously on other arsenic adsorbents. Such exceptional arsenic adsorption properties by HCO nanoparticles were shown to derive from the strong inner-sphere complexion. (c) 2012 Published by Elsevier B.V. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60063]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | R. H. Li,Q. Li,S. Gao,et al. Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part A. Adsorption capacity and mechanism[J]. Chemical Engineering Journal,2012,185:127-135. |
| APA | R. H. Li,Q. Li,S. Gao,&J. K. Shang.(2012).Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part A. Adsorption capacity and mechanism.Chemical Engineering Journal,185,127-135. |
| MLA | R. H. Li,et al."Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part A. Adsorption capacity and mechanism".Chemical Engineering Journal 185(2012):127-135. |
入库方式： OAI收割
来源：金属研究所
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