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http://dx.doi.org/10.5764/TCF.2010.22.2.123

Fabrication of Size- and Shape- Controlled Gold Particles using Wet Chemical Process  

Hong, So-Ya (Department of Organic Materials and Fiber Engineering, Soongsil University)
Lee, Chang-Hwan (Department of Organic Materials and Fiber Engineering, Soongsil University)
Kim, Joo-Yong (Department of Organic Materials and Fiber Engineering, Soongsil University)
Publication Information
Textile Coloration and Finishing / v.22, no.2, 2010 , pp. 123-131 More about this Journal
Abstract
Shape and size controlled synthesis of gold particles has been studied by using wet-chemical method. When ${AuCl_4}^-$ in aqueous $HAuCl_4$ precursor was reduced using $Na_2SO_3$ as a reducing agent, mixtures of spherical, triangular and hexagonal particles were prepared in a few minutes. It was found that the shape selective oxidative etching by ${AuCl_4}^-\;+\;Cl^-$ anions and crystal growth took place simultaneously. As the ${AuCl_4}^-$ and $Cl^-$ concentration increased, yields of large triangular and hexagonal plate type particles increased, while the spherical particles decreased in most cases. Possible etching and growth mechanisms are discussed.
Keywords
gold particles; wet-chemical reduction; $HAuCl_4$ solution; $Na_2SO_3$; reducing agent; electrospinning;
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Times Cited By KSCI : 1  (Citation Analysis)
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