锌掺杂钨酸铋光催化剂的制备及处理废水的研究

The Preparation of Photocatalyst and Its Application in Dye Wastewater Treatment

采用水热合成法制备了锌掺杂钨酸铋纳米复合光催化剂,并利用SEM、EDS等方法对复合光催化剂进行表征。通过可见光催化荧光染料罗丹明B的实验,考察复合光催化剂的用量,染料浓度,光反应时间,p H值对处理效果的影响,在最佳实验条件下对于罗丹明B的去除率可达到98%。在酸性及中性介质中,去除率受p H值影响较小,有效扩大了其潜在应用范围。

In this work,the zinc doping bismuth tungstate nanocomposite photocatalyst was prepared by hydrothermal method. The morphology of composite photocatalyst were characterized by SEM and EDS. The photocatalytic degradation of rhodamine B was studied using the as-prepared nano composite material as catalyst. The concentration of dye wastewater,reaction time,p H value and dosage of photocatalyst were studied,and the optimal photocatalytic degradation conditions were obtained. Under the best experimental conditions,the effect of photocatalytic degradation to simulated wastewater was also studied,and the removal rate of rhodamine B（10^（-5） mol/L） was reached to 98%. The removal rate would be maintain high level in acidic and neutral medium,which would effectively expand the scope of its potential application.