Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution | |
| Huang, L; Zhai, ML; Long, DW; Peng, J; Xu, L; Wu, GZ(吴国忠）; Li, JQ; Wei, GS; Zhai, ML (reprint author), Peking Univ, Beijing Natl Lab Mol Sci, Dept Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China | |
| 2008 | |
| Source Publication | JOURNAL OF NANOPARTICLE RESEARCH
 |
| ISSN | 1388-0764 |
| Volume | 10Issue:7Pages:1193 |
| Abstract | 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). |
| Subject Area | Physics |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000258446800012 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/7872 |
| Collection | 中科院上海应用物理研究所2004-2010年 |
| Corresponding Author | Zhai, ML (reprint author), Peking Univ, Beijing Natl Lab Mol Sci, Dept Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| Recommended Citation 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.,...&Zhai, ML .(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. |
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