文献类型：期刊文献

英文题名：Synthesis of gold nanoparticles by reduction of HAuCl₄ under UV irradiation

作者：Shang, Yazhuo;Min, Chengzhi;Hu, Jun;Wang, Tianmiao;Liu, Honglai[1];Hu, Ying

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2013

卷号：15

起止页码：17

外文期刊名：SOLID STATE SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000315070700003)】；

基金：This work is supported by the National Natural Science Foundation of China (Projects No. 20990224, 21173079), the Fundamental Research Funds for the Central Universities and the 111 Project of Ministry of Education of China (no. B08021).

语种：英文

外文关键词：Gold nanoparticles; Reduction; UV irradiation; Surfactants

摘要：Gold nanoparticles were prepared in surfactant solutions by reduction of HAuCl4 under UV irradiation without adding extra reductants or other organic substances. The effect of the structure and the property of surfactant on the size and the optical properties of prepared gold nanoparticles were studied. It was found that the longer the alkyl chain of the surfactant, the larger gold particles are obtained. On the other hand, lengthen the geminis spacer benefits the formation of smaller gold particles. The formation of adduct micelles composed of the charged surface active portion of the surfactant molecule and the ((AuCl4)-Cl-III)(-) ion in cationic surfactant solution serves as the gold source and favors the formation of gold particles with larger sizes. While the repulsion between the ((AuCl4)-Cl-III)(-) ion and the negative charged surface of anionic surfactant micelle is in favor of the formation of gold nanoparticles with smaller sizes. The nonionic surfactants can also assist the formation of dispersed gold nanoparticles. (C) 2012 Elsevier Masson SAS. All rights reserved.