Growth of PbSO4 Single-Crystal Nanorods and Optical Properties by a Microemulsion Approach

Jun-Hua Xiang, Shu-Hong Yu,* Xin Geng, Bian-Hua Liu, and Yang Xu
Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Materials Science and Engineering, Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China
Crystal Growth & Design, 2005, 5 (3), pp 1157–1161
DOI: 10.1021/cg049630t
Publication Date (Web): January 28, 2005
Copyright © 2005 American Chemical Society
*

 To whom correspondence should be addressed. E-mail: shyu@ustc.edu.cn. Fax:  0086 551 3603040.

Abstract

Abstract Image

Single-crystal PbSO4 (anglesite) nanorods with different diameter and aspect ratios have been synthesized by a microemulsion technique in a SDS/hexane/hexanol/water microemulsion. The effect of concentration of reactants, concentration of surfactants, and temperature on the crystallization of PbSO4 nanorods was investigated. Room-temperature photoluminescence spectra of well-defined uniform PbSO4 nanorods give two strong emission bands at 410 and 435 nm, and the weak emission at 340 nm almost cannot be detected at an excitation energy of 4.6−5.17 eV. As the excitation energy decreases, the 380 nm emission becomes intensified. When the excitation energy is larger than 5 eV in the range of 5.39−5.90 eV, only the blue band at 380 nm was observed.

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History

  • Published In Issue May 04, 2005
  • Received October 31, 2004
    Revised Manuscript Received December 11, 2004

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