SnO_2/钛酸钠纳米管对染料废水的光催化降解

Photodegradation of Dye Wastewater by SnO_2/Sodium Titanate Nanotubes

采用SnO2/钛酸钠纳米管为催化剂,罗丹明B水溶液模拟染料废水,利用分光光度法研究罗丹明B溶液初始浓度、光源及光照距离对其降解率的影响。结果表明,初始浓度为5 mg/L时的降解速度大于7.5 mg/L时的降解速度;紫外光是降解罗丹明B的最佳光源;光照距离越小罗丹明B的降解速度越快。

The effects of initial concentration of rhodamine B solution, light source and illumination distance on the degradation rate are studied by spectrophotometry, using SnO2/sodium titanate nanotubes as catalyst, rhodamine B solution simulating dye wastewater. The results indicate that the rate of rhodamine B degradation is higher when the initial concentration is 5mg/L than 7.5mg/L. Ultraviolet light is the best light source for degradation of rhodamine B. The rate of rhodamine B degradation is high when the illumination distance is small.