PVA stabilized gold nanoparticles by use of unexplored albeit conventional reducing agent

被引：98

作者：

Khanna, PK ^{[1
]}

Gokhale, R

Subbarao, VVVS

Vishwanath, AK

Das, BK

Satyanarayana, CVV

机构：

[1] C MET, Nanomat Lab, Pune 411008, Maharashtra, India

[2] Natl Chem Lab, Pune 41108, Maharashtra, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2005年 / 92卷 / 01期

关键词：

chemical synthesis; electronic materials; polymer; nanostructures;

D O I：

10.1016/j.matchemphys.2005.01.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Poly(vinyl alcohol) (PVA) stabilized gold nanoparticles have been prepared in aqueous medium using two different reducing viz.; hydrazine hydrate, a stronger reducing agent and sodium formaldehydesulfoxylate (SFS), a slightly weaker reducing agent. SFS is used for first ever time for reduction of gold metal salt. The PVA stabilized gold nanoparticles solutions are wine red to blood red coloured and are stable over a long period of time with no indication of aggregation. The solution shows strong visible light absorptions in the range of 520-540 nm, characteristics of gold nanoparticles. Powder X-ray diffraction patterns of freshly prepared films containing gold nanoparticles indicated particles size to be about 15 nm. Transmission electron microscopy (TEM) of a more than two-week-old sample revealed well-defined non-agglomerated spherical particles of about 50 nm diameter in solutions. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：229 / 233

页数：5

共 26 条

[1] ''Coulomb staircase'' at room temperature in a self-assembled molecular nanostructure [J].