Architectural Control Syntheses of CdS and CdSe Nanoflowers, Branched Nanowires, and Nanotrees via a Solvothermal Approach in a Mixed Solution and Their Photocatalytic Property

Wei-Tang Yao, Shu-Hong Yu,* Shu-Juan Liu, Jun-Peng Chen, Xian-Ming Liu, and Fan-Qing Li
Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, School of Chemistry & Materials, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
J. Phys. Chem. B, 2006, 110 (24), pp 11704–11710
DOI: 10.1021/jp060164n
Publication Date (Web): May 27, 2006
Copyright © 2006 American Chemical Society
*

 Address correspondence to this author. Fax:  + 86 551 3603040. E-mail:  shyu@ustc.edu.cn.

Abstract

Wurtzite CdS and CdSe nanostructures with complex morphologies such as urchin-like CdS nanoflowers, branched nanowires, and fractal nanotrees can be produced via a facile solvothermal approach in a mixed solution made of diethylenetriamine (DETA) and deionized water (DIW). The morphologies of CdS and CdSe nanocrystals can be easily controlled via tuning the volume ratio of DETA and DIW. Urchin-like CdS nanoflowers made of CdS nanorods are in a form of highly ordered hierarchical structures, while the nanowires are branched nanowires, and the fractal CdS nanotrees are a buildup of branched nanopines. The results demonstrated that solvothermal reaction in a mixed amine/water can access a variety of complex morphologies of semiconductor materials. The photocatalytic activity of CdS particles with different morphologies has been tested by the degradation of acid fuchsine under both UV and visible light, showing that the as-prepared branched CdS nanowires exhibit high photocatalytic activity for degradation of acid fuchsine.

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History

  • Published In Issue June 22, 2006
  • Received January 9, 2006
    Revised April 21, 2006

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