Preparation and characterization of bismuth silicate nanopowders |
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Authors: | Zhaohui Bai Xuewei Ba Ru Jia Bo Liu Zhiyi Xiao Xiyan Zhang |
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Institution: | (1) School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China;(2) Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, 161006, China |
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Abstract: | Bismuth silicate (Bi4Si3O12) nanopowders were prepared by the sol-gel method. Tetraethyl orthosilicate (TEOS) and Bi2O3 were used as the starting materials. The precursors were heat-treated at 750°C for 2 h. The size distribution of Bi4Si3O12 nanopowders is 40–100 nm. The thermogravimetry and differential thermal analysis (TG-DTA) curves, the X-ray diffraction (XRD)
patterns and the transmission electron microscopy (TEM) microphotograph of Bi4Si3O12 were discussed. Compared with crystal materials, the excitation and emission spectra of Bi4Si3O12 nanopowders indicated a blue shift.
Translated from Chinese Journal of Inorganic Chemistry, 2006, 22(7): 1327–1329 (in Chinese) |
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Keywords: | bismuth silicate nanopowders spectrum analysis |
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