Stabilising Agent Specific Synthesis of Multi-Branched and Spherical Au Nanoparticles by Reduction of AuCl4 by Fe2+ Ions

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Abstract:

Herein we report a new method of synthesis of Au nanoparticles (NPs) of multi-branched and spherical shapes. HAuCl4 when reduced by Fe2+ ions in aqueous solution, in the presence of sodium dodecyl sulfate (SDS), produced multi-branched Au NPs including a shape that could be termed as a "nanofan." On the other hand spherical particles were produced in the presence of Na2S and SDS or starch (instead of SDS). UV-vis, X-ray diffraction, transmission electron microscopic (TEM) studies revealed the difference in optical properties and shapes under various conditions. The essential conclusion of this report is that stabilizing agent and other reagents do have special role in controlling the shape of the NPs produced.

Keywords: COLLOIDS; NANOPARTICLES; REDOX REACTIONS; SPECTROSCOPY; SURFACTANTS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.707

Publication date: June 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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