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Another possibility of carboxymethyl chitosan: a ‘sunshine’ reductant for the gold nanoparticles with high stability

YI LONG1,* , WUDE YANG2,* , XU YI1, DAOMIN LU1, SHUOSHI WANG1

Affiliation

  1. Central Laboratory for Second Affiliated Hospital Guiyang College of Traditional Chinese Medicine, 83 Feishan Street , Guiyang, Guizhou, P. R. China
  2. Lab. of Plant Chemistry, Medicine College, Guiyang College of Traditional Chinese Medicine, 50 Shidong Road, Guiyang, Guizhou, P. R. China

Abstract

In this research, carboxymethyl chitosan and s olar light were used to prepare gold nanoparticles. After being irradiated by solar light, a characteristic peak of gold nanoparticle can be found in UV visible absorption spectrum of the aqueous solution of carboxymethyl chitosan and HAuCl 4 . Most particle s prepared by this method were around 20 nm in size. It was proved that the resultants were polycrystalline nanoparticles rather than amorphous nanocomposites by X ray diffraction analyse and selected area electron diffraction experiment. The gold nanopart icles prepared by this method were stable even in high salinity solution. It was conjectured that the carboxyl group of carboxymethyl chitosan may be the reason of reducibility..

Keywords

Carboxymethyl chitosan, Gold nanoparticles, Solar light, Green synthesis.

Citation

YI LONG, WUDE YANG, XU YI, DAOMIN LU, SHUOSHI WANG, Another possibility of carboxymethyl chitosan: a ‘sunshine’ reductant for the gold nanoparticles with high stability, Optoelectronics and Advanced Materials - Rapid Communications, 10, 9-10, September-October 2016, pp.744-747 (2016).

Submitted at: May 19, 2015

Accepted at: Sept. 29, 2016