Photocatalytic degradation of RhB with yeast-assisted ZnWO4 hollow microspheres

Yeast cells were utilized as templates to synthesize ZnWO₄ hollow microspheres photo-catalyst in this paper. Moreover, the main influencing factors in the photocatalytic degradation of low concentration RhB dye wastewater had been studied by using as-obtained hollow ZnWO₄ photo-catalyst. The results of experiments indicate that pH, concentration of RhB dye and dosage of catalyst had significant influence on the degradation efficiency of RhB dye wastewater. The degradation rate reached 87.5% under the condition when amount of ZnWO₄ is 2g/L, pH 6, and the concentration of RhB at 0.5×10^-5 mol/L.