期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 127, 期 1-2, 页码 114-119出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2011.01.043
关键词
Oxides; Crystal growth; Nanostructures; Optical properties
资金
- National Basic Research Program of China [2010CB732300]
- National Natural Science Foundation of China [20973058]
- Commission of Science and Technology of Shanghai Municipality [08JC1407900, 10XD1401400]
- East China University of Science and Technology, China
Three-dimensional nanoflowers consisting of uniform crystalline SnO2 nanorods were spontaneously grown by the gradual hydrolysis of SnS32- in an aqueous system at 180 degrees C. The resulting material was characterized by using SEM, TEM, EDX, SAED, XRD, and UV-vis techniques. The results clearly show that these uniform crystalline SnO2 nanorods grow in the [0 0 1] direction with the enclosing facets of {1 1 0}. It is believed that the controlled release of Sn(OH)(6)(2-) is achieved via the gradual hydrolysis of SnS32-, which is accounting for the oriented growth. The band gap energy (E-g) of the SnO2 nanoflowers deduced from the diffused UV-vis spectrum is 3.60 eV and the photoluminescence spectra of the nanoflowers shows three emission peaks centered at wavelengths of 355, 390 and 465 nm, respectively. Crown Copyright (C) 2011 Published by Elsevier By. All rights reserved.
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