Bi_2WO_6 Nanoparticles Prepared by Combustion Synthesis with Different Fuels and their Photocatalytic Activity

摘要

The influence of glycine, glycerine, ethylene glycol and citric acid fuel and their ratio to NO_3~ on formation and dispersity of Bi_2WO_6 nanoparticles prepared by combustion synthesis has been studied. The pure crystalline Bi_2WO_6 with specific surface area 24.8 m~2/g and crystallite size of 28 nm was obtained by using glycerine as fuel at its ratio to NO_3~- of 0.67. The photocatalytic activity of the prepared Bi_2WO_6 in degradation of methylene blue depended on its specific surface area of samples and solution pH.