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水热法制备了TiO2纳米管,并采用简单加热回流的方法制备了ZnS/TiO2纳米复合材料。采用TEM、XRD分析手段对产物进行表征,并对其光催化降解酸性玫瑰红B(AR)染料废水进行了研究。考察了反应物供给速率、硫化锌复合量、催化剂稳定性、光照对光催化降解效果的影响。研究表明控制反应物供给速率和硫化锌的负载量可使硫化锌在二氧化钛纳米管表面均匀分散。当染料废水初始浓度为10mg/L,ZnS:TiO2=8:1时,ZnS/TiO2复合材料光催化活性最高。且催化剂稳定性较好。
TiO2 nanotubes were prepared by hydrothermal method and ZnS / TiO2 nanocomposites were prepared by simple heating and refluxing method. The products were characterized by TEM and XRD, and their photocatalytic degradation of acid rose B (AR) dye wastewater was studied. The effects of the reactant supply rate, zinc sulfide content, catalyst stability and light irradiation on photocatalytic degradation were investigated. Studies have shown that the control of the rate of supply of reactants and the loading of zinc sulfide allows the zinc sulfide to be uniformly dispersed on the surface of titania nanotubes. When the initial concentration of dye wastewater is 10mg / L, ZnS: TiO2 = 8: 1, the photocatalytic activity of ZnS / TiO2 composites is the highest. And the catalyst stability is better.