Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 493, Issue 1-2, Pages L25-L28Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.12.132
Keywords
Composite materials; Microstructure; Luminescence
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Funding
- National Natural Science Foundation of China [20701002]
- Science and Technological Fund of Anhui Province for Outstanding Youth [08040106834]
- Education Department of Anhui Province [2006KJ006TD]
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A facile solvothermal strategy has been developed to prepare PbSO4-sheathed PbS microstructures with butterfly-like shapes using Pb(NO3)(2) and thioacetamide as the starting materials. X-ray powder diffraction, scanning electron microscopy, selected area electron diffraction, and high resolution transmission electron microscopy characterization results indicate that the as-prepared product is composed of PbS/PbSO4 core/shell microstructures. Interior PbS microcrystal, with a layer of polycrystalline PbSO4 shell on its surface, grow along eight {1 1 1} crystalline directions. A possible reaction and growth mechanism of the butterfly-like PbSO4/PbS microstructures has been discussed. Optical property investigation shows that the PbSO4-sheathed PbS microstructures have an intense luminescence in cyan region. (C) 2009 Elsevier B.V. All rights reserved.
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