期刊
MATERIALS EXPRESS
卷 4, 期 3, 页码 258-262出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/mex.2014.1167
关键词
Nanocrystalline Materials; Mn3O4; Self-Assembly; Raman Spectroscopy; Photoluminescence
资金
- National Natural Science Foundation of China [61373072]
- Fundamental Research Funds for the Central Universities [FRF-AS-13-004A, FRF-TF-13-021A, FRF-BR-09-007A]
- National Key Scientific Instruments and Equipment Development Special Fund [2011YQ14014506, 2011YQ14014507]
- Oriented Award Foundation for Science and Technological Innovation, Inner Mongolia Autonomous Region, China
- University of Science and technology Beijing
We report the hydrothermal-growth of 3D coins-like nanostructures self-assembled with single-crystalline tetragonal Mn3O4 nanoparticles using MnCl2 center dot 4H(2)O and KOH as raw materials. The morphology, composition and structure were characterized by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) with selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and Raman spectroscopy (RS). FESEM results show that the average diameter of coin-like nanostructures is 95 nm and the thickness is measured to be about 35 nm. TEM investigations reveal that the as-prepared Mn3O4 nanostructures are self-assembled with randomly distributed nanoparticles having a diameter of about 3 nm on the average. The photoluminescence (PL) studies for the as-prepared Mn3O4 nanostructures exhibit multiple PL emission bands located in the yellow-ultraviolet spectral region at room temperature without any surface modification.
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