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Journal of Nanomaterials
Volume 2010, Article ID 969030, 9 pages
Research Article

Synthesis of High-Yield Gold Nanoplates: Fast Growth Assistant with Binary Surfactants

1College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
3Department of Applied Physics, Nanjing University of Technology, Nanjing 210009, China

Received 4 September 2009; Revised 24 February 2010; Accepted 14 April 2010

Academic Editor: Yong Wang

Copyright © 2010 Changshun Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel and simple chemical method was developed to fastly synthesize Au nanoplates with size of micrometers and tens of nanometers in thickness. The synthesis was carried out within 30 minutes by thermal reduction of precursors (HAuCl4) in the presence of binary surfactants Poly(vinylpyrrolidone) (PVP) and cetyltrimethylammonium bromide (CTAB) in ethylene glycol (EG) solution. The presence and concentration of PVP and CTAB in the growth solution play important roles in the fast formation of Au nanoplates. The obtained Au nanoplates exhibit strong surface plasmon absorption in the near-infrared region (NIR), displaying a considerable dependence on the shape and size. Characterizations by Transmission electron microscope and X-ray diffraction indicated that the nanoplates are single crystals with (111) planes as two basal surfaces. Explanations for the nuclei formation and crystal growth behind anisotropic Au nanoplates were proposed.