Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 115, Issue 2-3, Pages 502-506Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.01.012
Keywords
Semiconductors; Chemical synthesis; Electron microscopy; Optical properties
Categories
Funding
- National Natural Science Foundation of China [50504017]
- Hunan Provincial Key Science and Technology Project of China [2007FJ3008]
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An effective biomolecule-assisted synthetic route has been successfully developed to prepare gamma-manganese sulfide (MnS) microtubes under hydrothermal conditions. In the synthetic system, soluble hydrated manganese chloride was employed to supply Mn source and L-cysteine was used as precipitator and complexing reagent. Sea urchin-like gamma-MnS and octahedron-like alpha-MnS microcrystals could also be selectively obtained by adjusting the process parameters such as hydrothermal temperature and reaction time. The phase structures, morphologies and properties of the as-prepared products were investigated in detail by X-ray diffraction (XRD). scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), and photoluminescence spectra (PL). The photoluminescence studies exhibited the correlations between the morphology, size, and shape structure of MnS microcrystals and its optical properties. The formation mechanisms of manganese sulfide microcrystals were discussed based on the experimental results. (C) 2009 Elsevier B.V. All rights reserved.
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