UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution
文献类型：期刊论文
| 作者 | Huang, L ; Zhai, ML ; Long, DW ; Peng, J ; Xu, L ; Wu, GZ(吴国忠） ; Li, JQ ; Wei, GS |
| 刊名 | JOURNAL OF NANOPARTICLE RESEARCH
 |
| 出版日期 | 2008 |
| 卷号 | 10期号:7页码:1193 |
| ISSN号 | 1388-0764 |
| 通讯作者 | Zhai, ML (reprint author), Peking Univ, Beijing Natl Lab Mol Sci, Dept Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 英文摘要 | The silver nanoparticles (AgNPs) were synthesized in an alkalic aqueous solution of silver nitrate (AgNO(3))/carboxymethylated chitosan (CMCTS) with ultraviolet (UV) light irradiation. CMCTS, a water-soluble and biocompatible chitosan derivative, served simultaneously as a reducing agent for silver cation and a stabilizing agent for AgNPs in this method. UV-vis spectra and transmission electron microscopy (TEM) images analyses showed that the pH of AgNO(3)/CMCTS aqueous solutions, the concentrations of AgNO(3) and CMCTS can affect on the size, amount of synthesized AgNPs. Further by polarized optical microscopy it was found that the CMCTS with a high molecular weight leads to a branch-like AgNPs/CMCTS composite morphology. The diameter range of the AgNPs was 2-8 nm and they can be dispersed stably in the alkalic CMCTS solution for more than 6 months. XRD pattern indicated that the AgNPs has cubic crystal structure. The spectra of laser photolysis of AgNO(3)/CMCTS aqueous solutions identified the early reduction processes of silver cations ( Ag(+)) by hydrated electron (e(aq)(-)) formed by photoionization of CMCTS. The rate constant of corresponding reduction reaction was 5.0 x 10(9) M(-1) s(-1). |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000258446800012 |
| 公开日期 | 2012-04-18 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/7872]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2004-2010年 |
| 推荐引用方式 GB/T 7714 | Huang, L,Zhai, ML,Long, DW,et al. UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution[J]. JOURNAL OF NANOPARTICLE RESEARCH,2008,10(7):1193. |
| APA | Huang, L.,Zhai, ML.,Long, DW.,Peng, J.,Xu, L.,...&Wei, GS.(2008).UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution.JOURNAL OF NANOPARTICLE RESEARCH,10(7),1193. |
| MLA | Huang, L,et al."UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution".JOURNAL OF NANOPARTICLE RESEARCH 10.7(2008):1193. |
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。