镱镧共掺杂二氧化钛光催化降解染料废水

采用溶胶-凝胶法制备镱镧共掺杂光催化剂Yb-La/TiO2,在紫外灯照射下,对罗丹明B模拟染料废水进行光催化降解研究,优化了光催化的反应条件。结果表明,催化剂用量2 g/L,溶液pH值为6,光照时间2.5 h,染料废水的起始浓度为10 mg/L时,染料废水的降解率可达96.71%;在上述体系中加入0.2 g/L的双氧水,在pH值为3⁴时,光照时间2 h,染料废水的降解率可达97.02%,可提高光催化效率。

Photocatalytic degrading dye wastewater by Yb-La Co-doped nano TiO2

A photoeatalyst, ytterbium and lanthanum Co-doped TiO2 （ Yb-La/TiO2 ） was prepared by a sol gel method. The photocatalysis reaction conditions were optimized through the investigation that under the radiation of UV lamp, the photocatalytic degradation of using Rhodamine B as dye wastewater. Results showed that when the amount of catalyst was 2 g/L;the pH value was 6, the illumination time was 2, 5 h, and the starting concentration of wastewater was l0 rag/L, the degradation rate of dye wastewater can reach 96.71% ; in the system above adding 0.2 g/L of hydrogen peroxide, at pH of 3 - 4, the illumination time was 2 h,the degradation rate of dye wastewater can reach 97.02% and photocatalytic efficiency can be improved.