Specifics of the preparation of anisotropically shaped gold nanoparticles in triton X-100 reverse micelles |
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| Authors: | M G Spirin S B Brichkin V F Razumov |
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| Institution: | (1) Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA;(2) Department of Physics, University of Texas at San Antonio, San Antonio, TX 78249-1644, USA;(3) Present address: Phelps Dodge-Safford, Safford, AZ 85548, USA; |
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| Abstract: | The influence of the form of micelles and reactant concentrations on the formation and growth of gold nanoparticles in reverse
micelles based on Triton X-100 (polyoxyethylene octyl phenyl ether) was studied. It was shown that spherical nanoparticles
of 3–4 nm in size are formed in the presence of sodium sulfite and ascorbic acid and particles of an extended shape are formed
in the presence of ascorbic acid alone. It was found that the ultimate shape and size of the nanoparticles depend not only
upon the form of micelles but also on the acid concentration, since the products of its oxidation can be selectively sorbed
on the surface of the particles and act as additional shape modifiers. |
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