Chin. Phys. Lett.  1992, Vol. 9 Issue (2): 73-76    DOI:
Original Articles |
Preparation and Properties of Silver Colloids Produced by Laser-Induced Reduction of Silver Nitrate
LIANG Erjun;WANG Yuntao;WANG Yujin;HAO Qingxiu ZHANG Pengxiang*
Center of Analysis and Test, Zhengzhou University, Zhengzhou 450052 *Institute of Physics, Academia Sinica, Beijing 100080
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LIANG Erjun, WANG Yuntao, WANG Yujin et al  1992 Chin. Phys. Lett. 9 73-76
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Abstract Silver colloids have been prapared by laser-induced reduction of silver nitrate. The properties of the colloids were studied with transmission electron microscopy, visible-ultraviolet absorption and Raman spectroscopy. We find that the growth of the silver grains is dependent on the laser illumination time. Two characteristic absorption bands of the colloids are located near 390 and 560nm, respectively. Not only are the silver colloids much cleaner than those prepared by chemical reduction methods, but also surface enhanced Raman scattering active. The method may be of interests for ultrafine particle studies as well.

Keywords: 33.20.Fb      78.30.-j      81.10.Dn     
Published: 01 February 1992
PACS:  33.20.Fb (Raman and Rayleigh spectra (including optical scattering) ?)  
  78.30.-j (Infrared and Raman spectra)  
  81.10.Dn (Growth from solutions)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1992/V9/I2/073
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LIANG Erjun
WANG Yuntao
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