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Role of Temperature in the Growth of Silver Nanoparticles Through a Synergetic Reduction Approach

XC Jiang1*, WM Chen1, CY Chen12, SX Xiong1 and AB Yu1

Author affiliations

1 School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia

2 Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

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Citation and License

Nanoscale Res Lett 2011, 6:32  doi:10.1007/s11671-010-9780-1

Published: 23 September 2010

Abstract

This study presents the role of reaction temperature in the formation and growth of silver nanoparticles through a synergetic reduction approach using two or three reducing agents simultaneously. By this approach, the shape-/size-controlled silver nanoparticles (plates and spheres) can be generated under mild conditions. It was found that the reaction temperature could play a key role in particle growth and shape/size control, especially for silver nanoplates. These nanoplates could exhibit an intensive surface plasmon resonance in the wavelength range of 700–1,400 nm in the UV–vis spectrum depending upon their shapes and sizes, which make them useful for optical applications, such as optical probes, ionic sensing, and biochemical sensors. A detailed analysis conducted in this study clearly shows that the reaction temperature can greatly influence reaction rate, and hence the particle characteristics. The findings would be useful for optimization of experimental parameters for shape-controlled synthesis of other metallic nanoparticles (e.g., Au, Cu, Pt, and Pd) with desirable functional properties.

Keywords:
Silver nanoparticles; Nanoplates; Reaction temperature; Thermodynamics effect