UV-induced synthesis, characterization and formation mechanism of silver nanoparticles in alkalic carboxymethylated chitosan solution

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2004-2010年

	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
刊名	JOURNAL OF NANOPARTICLE RESEARCH
	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
内容类型	期刊论文
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.