Strategy of fabricating enriched gold nanoparticles based on electrochemical methods

Fu Der Mai, Ting Chu Hsu, Yu Chuan Liu, Kuang Hsuan Yang

研究成果: 雜誌貢獻文章同行評審

6 引文 斯高帕斯(Scopus)

摘要

In this work, we report a new and clean electrochemical pathway to prepare enriched gold nanoparticles in aqueous solutions via the aid of chitosan without addition of any other stabilizer and reductant. First, an Au substrate was cycled in a deoxygenated aqueous solution containing 0.1 N NaCl and 1 g/L chitosan from - 0.28 to + 1.22 V vs Ag/AgCl at 500 mV/s with 500 scans. Then the Au working electrode was immediately replaced by a Pt electrode, and a cathodic overpotential of 0.6 V from the open circuit potential (OCP) of ca. 0.84 V vs Ag/AgCl was applied under sonification to synthesize Au nanoparticles. Experimental results indicate the concentration and the particle sizes of prepared Au nanoparticles are ca. 50 ppm and 10 nm in diameter, respectively. No aggregation of Au nanoparticles is observed in an ambient atmosphere for at least 3 months.

原文英語
頁(從 - 到)1788-1790
頁數3
期刊Materials Letters
65
發行號12
DOIs
出版狀態已發佈 - 六月 30 2011

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學
  • 機械工業

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