J Mater Sci Technol ›› 2003, Vol. 19 ›› Issue (03): 278-280.

• Research Articles • Previous Articles     Next Articles

Nanostructured Cadmium Sulfide: Sonochemical Synthesis, Optical Properties and Formation Process

Guozhong WANG, Yewu WANG, Yuchuan ZHANG, Yucheng WU3), Guanghai LI1), Lide ZHANG1)   

  1. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China...
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-05-28 Published:2009-10-10
  • Contact: Guozhong WANG

Abstract: Semiconductor CdS nanoparticles were synthesized by the sonochemical reduction of a mixed aqueous solution of CdCl2, Na2S2O3 and (CH3)2CHOH in Ar atmosphere at room temperature. The results of a detailed investigation with X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectrum and optical absorption spectroscopy are reported. A clearly red shift of the absorption edge and a broad absorption band related to the surface states of nanoparticles have been observed in the optical absorption spectra with the increasing of CdS particle size. The mechanisms of the CdS nanoparticle formation and size growth during sonochemical irradiation were discussed. This convenient method is found to be an efficient way to produce other chalcogenides as well.

Key words: CdS, Nanoparticles, Sonochemical reduction, Chemical mechanism