Preparation of wool-bismuth salt composite powder and photocatalytic degradation of dyes
Bismuth ferrite and bismuth trioxide powder were prepared by the sol-gel method,and bis-muth oxycarbonate powder was prepared by the hydrothermal method.The washed and dried wool fibers were degreased by Soxhlet extraction,and then the wool powder was prepared by freezing and grinding.Then the wool powder was frozen ground with bismuth ferrite,bismuth trioxide and bismuth oxycarbonate powder to prepare bismuth ferrate-wool powder,bismuth trioxide wool powder and bismuth oxycarbonate wool powder.The crystal structure of the sample was analyzed by X-ray diffractometer,and the surface mor-phology was observed by scanning electron microscopy.The photocatalytic performance of methylene blue dye was evaluated by catalytic degradation under visible light.
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