Facile green synthesis of gold nanoparticles with gum arabic as a stabilizing agent and reducing agent

Chien Chen Wu, Dong Hwang Chen

研究成果: Article同行評審

95 引文 斯高帕斯(Scopus)

摘要

A facile, completely green, and cheap route for the synthesis of Au nanoparticles at 25-75°C has been developed by using only hydrogen tetrachloroaurate as the precursor and gum arabic (GA) simultaneously as a reducing agent and a stabilizing agent. No extra reagents are needed. From the analyses of UV/VIS absorption spectra, TEM, HRTEM, SAED, and XRD patterns, the formation of Au nanoparticles with a fcc structure was recognized. The synthesis reaction was usually finished in 2-4 h. Increasing the reaction temperature increased the formation rate but had no significant effect on the optical property and size of Au nanoparticles. With increasing Au(III) ion concentration or GA concentration, the mean diameter of Au nanoparticles slightly increased. Also, the particle size distribution became broader at higher Au(III) ion concentration or lower GA concentration due to the insufficient protection. Although raising the GA concentration was helpful to reduce Au(III) ions completely and stabilize the Au nanoparticles, too high GA concentration was not suitable for the stabilization of Au nanoparticles because the increased intermolecular force of GA might hinder the dispersion of Au nanoparticles. Furthermore, the resultant Au nanoparticles were found to remain highly stable in the NaCl solution.

原文English
頁(從 - 到)234-240
頁數7
期刊Gold Bulletin
43
發行號4
DOIs
出版狀態Published - 2010

All Science Journal Classification (ASJC) codes

  • 一般材料科學
  • 無機化學

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