%A BAI Zhaohui, JIA Ru, LIU Bo, XIAO Zhiyi, ZHANG Xiyan, BA Xuewei %T Preparation and characterization of bismuth silicate nanopowders %0 Journal Article %D 2007 %J Front. Chem. China %J Frontiers of Chemistry in China %@ 1673-3495 %R 10.1007/s11458-007-0027-3 %P 131-134 %V 2 %N 2 %U {https://journal.hep.com.cn/fcc/EN/10.1007/s11458-007-0027-3 %8 2007-06-05 %X 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.