Preparation of hydrophobic nano-silver colloid and aqueous nano-silver colloid by phase transfer

被引：17

作者：

Wei, Shanshan ^{[1
]}

Xu, Xiangyang ^{[2
]}

Liu, Yuejun ^{[1
]}

Yang, Junming ^{[1
]}

机构：

[1] Hunan Univ Technol, Coll Packaging & Mat Engn, Zhuzhou 412008, Hunan, Peoples R China

[2] Changsha Res Inst Min & Met, Changsha 410012, Hunan, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 126卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Hydrophobic nano-silver colloid; Aqueous nano-silver colloid; Tributyl phosphate; Phase transfer; Silver nanoparticles; NANOWIRES; NANOPARTICLES; PARTICLES; FACILE; MICROEMULSION; GROWTH;

D O I：

10.1016/j.matchemphys.2010.11.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel and facile method to prepare hydrophobic nano-silver colloid and aqueous coordinate was proposed. Chemical reduction of silver nitrate in a tributyl phosphate (TBP) solution containing polyvinylpyrrolidone (PVP) was conducted and stable hydrophobic nano-silver/TBP/PVP colloids were obtained. Adopting a phase transfer process, the as-prepared colloids can be diverted into an aqueous system to obtain hydrophilic nano-silver colloids. The resultant materials were characterized by digital camera, TEM, XRD and UV-vis spectra. The results show that the reaction can be accomplished fast at room temperature and the synthesized colloids can remain stable for a long time, and the mean diameter of silver particles is around 10 nm for both nano-silver colloids. The nano-silver crystalline is face-centered cubic (fcc) structure, and the UV-vis absorbance peaks are at 412 and 420 nm for aqueous nano-silver and nano-silver/TBP/PVP colloids respectively. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：12 / 15

页数：4

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