The pure phase of BiFeO3 powder was synthesized by a microwave-hydrothermal method with FeCl3·6H2O and Bi(NO3)3·5H2O powder as raw materials,KOH as mineralizer and Tween 80 as a surfactant.The effects of the amount of Tween 80 on morphology,phase composition and photocatalytic property of BiFeO3 powder were investigated.The results indicate that the single phase of BiFeO3 powder could be prepared via the microwave-hydrothermal method at 200 ℃ for 1 h with KOH of 1.5 mol/L,the volume fraction of Tween 80 of ...