Preparation and characterization of bismuth silicate nanopowders

doi:10.1007/s11458-007-0027-3

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Front. Chem. China ›› 2007, Vol. 2 ›› Issue (2) : 131-134. DOI: 10.1007/s11458-007-0027-3

Preparation and characterization of bismuth silicate nanopowders

BAI Zhaohui¹, JIA Ru¹, LIU Bo¹, XIAO Zhiyi¹, ZHANG Xiyan¹, BA Xuewei²

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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.

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BAI Zhaohui, JIA Ru, LIU Bo, XIAO Zhiyi, ZHANG Xiyan, BA Xuewei. Preparation and characterization of bismuth silicate nanopowders. Front. Chem. China, 2007, 2(2): 131‒134 https://doi.org/10.1007/s11458-007-0027-3