Sonochemical Synthesis of Well-Dispersed Gold Nanoparticles at the Ice Temperature

Chia Hao Su, Pei Lin Wu, Chen Sheng Yeh

研究成果: Article同行評審

81 引文 斯高帕斯(Scopus)

摘要

A newly modified sonochemical approach was demonstrated to synthesize stable Au suspensions. The formation of Au nanoparticles with diameters of ∼20 nm was accomplished through the ultrasonic irradiation of aqueous HAuCl4 solutions containing trisodium citrate at 4 °C. The efficient generation in gold particles only occurred when the sufficient citrate concentrations (1.9, 2.9, and 3.9 mM) were reached. At low citrate concentrations ranging from 0.49 to 1.5 mM, large aggregates of coalesced Au particles were observed as sonication time increased. It is proposed that citrate could transform as the reducing radicals, 1,2,3-tricarboxy-2-propyl radicals, for the AuCl4- reduction and might also act as the stabilizer during particles formation.

原文English
頁(從 - 到)14240-14243
頁數4
期刊Journal of Physical Chemistry B
107
發行號51
DOIs
出版狀態Published - 2003 十二月 25

All Science Journal Classification (ASJC) codes

  • 物理與理論化學
  • 表面、塗料和薄膜
  • 材料化學

指紋

深入研究「Sonochemical Synthesis of Well-Dispersed Gold Nanoparticles at the Ice Temperature」主題。共同形成了獨特的指紋。

引用此