Study on Degradation Activity of Organic Compound in Bashang Area Sewage Over ZnO-TiO2 Composite Photocatalyst
ZnO-TiO2 composite photocatalyst was prepared by sol-gel method with the reagent of Zn(NO3)2 and C16H36O4Ti,and it was used to degrade organic matters in wastewater from Bashang area of Zhangbei,and its performance was investigated.XRD and UV-Vis were used to characterize the crystal structure and photo absorption of the catalysis.The results showed that ZnO-TiO2 composite photocatalyst mainly existed anatase phase TiO2 and cubic Zn2TiO4 crystalline phase,which strengthened the ultraviolet absorption ability than nano-TiO2,and with a bandwidth-absorption and red-shift.At the dosage of 5%,when the compound photocatalyst with n(Zn)∶n(Ti)ratio of 3∶15 was absorbed in dark for 30 min and irradiated by 20 W ultraviolet lamp for 5 h,the degradation rate of organic matters in sewage was 89.2%.
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