Adsorption and desorption characteristics of arsenic onto ceria nanoparticles
文献类型：期刊论文
| 作者 | Feng QZ(冯钦忠) ; Zhang ZY(张智勇); Ma YH(马宇辉); Feng, QZ; Zhang, ZY; Ma, YH; He, X; Zhao, YL; Chai, ZF; He X(何潇)
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| 刊名 | NANOSCALE RESEARCH LETTERS
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| 出版日期 | 2012 |
| 卷号 | 7页码:1-8 |
| 关键词 | ceria nanoparticles arsenic adsorption desorption |
| 英文摘要 | The rapid increase in the use of engineered nanoparticles [ENPs] has resulted in an increasing concern over the potential impacts of ENPs on the environmental and human health. ENPs tend to adsorb a large variety of toxic chemicals when they are emitted into the environment, which may enhance the toxicity of ENPs and/or adsorbed chemicals. The study was aimed to investigate the adsorption and desorption behaviors of arsenic on ceria NPs in aqueous solution using batch technique. Results show that the adsorption behavior of arsenic on ceria NPs was strongly dependent on pH and independent of ionic strength, indicating that the electrostatic effect on the adsorption of these elements was relatively not important compared to surface chemical reactions. The adsorption isotherms fitted very well to both the Langmuir and Freundlich models. The thermodynamic parameters (Delta H (0) , Delta S (0) , and Delta G (0) ) for the adsorption of arsenic were determined at three different temperatures of 283, 303, and 323 K. The adsorption reaction was endothermic, and the process of adsorption was favored at high temperature. The desorption data showed that desorption hysteresis occurred at the initial concentration studied. High adsorption capacity of arsenic on ceria NPs suggests that the synergistic effects of ceria NPs and arsenic on the environmental systems may exist when they are released into the environment. |
| 学科主题 | Science & Technology - Other Topics; Materials Science; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000301191400001 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223745]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Feng QZ,Zhang ZY,Ma YH,et al. Adsorption and desorption characteristics of arsenic onto ceria nanoparticles[J]. NANOSCALE RESEARCH LETTERS,2012,7:1-8. |
| APA | 冯钦忠.,张智勇.,马宇辉.,Feng, QZ.,Zhang, ZY.,...&柴之芳.(2012).Adsorption and desorption characteristics of arsenic onto ceria nanoparticles.NANOSCALE RESEARCH LETTERS,7,1-8. |
| MLA | 冯钦忠,et al."Adsorption and desorption characteristics of arsenic onto ceria nanoparticles".NANOSCALE RESEARCH LETTERS 7(2012):1-8. |
入库方式： OAI收割
来源：高能物理研究所
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