Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption
文献类型：期刊论文
| 作者 | Wang Hongjie ; Kang Jin ; Liu Huijuan ; Qu Jiuhui |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:11页码:1473-1479 |
| 关键词 | organically functionalized silica gel 2-acrylamido-2-methylpropanesulfonic acid (AMPS) adsorption |
| 中文摘要 | A novel adsorbent (AMPS-silica) was synthesized by bounding AMPS (2-acrylamido-2-methylpropanesulfonic acid) onto silica surface, which functioned with gamma-methacryloxypropyltrimethoxysilane reagent. The adsorbent was characterized by nitrogen adsorption/desorption measurement, thermogravimetric analysis (TGA) and potentiometric titration analysis. The TGA result indicated that the surface modification reactions introduced some organic functional groups onto the surface of silica. The surface area of AMPS-silica was 389.7 m(2)/g. The adsorbent was examined for copper ion removal in series of batch adsorption experiments. Results showed that the adsorption of Cu(2+) onto AMPS-silica was pH dependent, and the adsorption capacity increased with increasing pH from 2 to 6. The adsorption kinetics showed that Cu(2+) adsorption was fast and the data fitted well with a pseudo second-order kinetic model. The adsorption of Cu(2+) onto AMPS-silica obeyed both Freundlich and Langmuir isotherms, with r(2) = 0.993 and r(2) = 0.984, respectively. The maximum Cu(2+) adsorption capacity was 19.9 mg/g. The involved mechanism might be the adsorption through metal binding with organic functional groups such as carboxyl, amino and sulfonic groups. Cu(2+) loaded on AMPS-silica could be desorbed in HNO(3) solution, and the adsorption properties remain stable after three adsorption-desorption cycles. |
| WOS记录号 | WOS:000272477300001 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21725]  |
| 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 | Wang Hongjie,Kang Jin,Liu Huijuan,et al. Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2009,21(11):1473-1479. |
| APA | Wang Hongjie,Kang Jin,Liu Huijuan,&Qu Jiuhui.(2009).Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,21(11),1473-1479. |
| MLA | Wang Hongjie,et al."Preparation of organically functionalized silica gel as adsorbent for copper ion adsorption".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 21.11(2009):1473-1479. |
入库方式： OAI收割
来源：生态环境研究中心
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