Y_2O_3/WO_3光催化降解酸性红B

Photocatalytic degradation of acid red B by Y_2O_3/WO_3 as heterogeneous photocatalyst

用光催化剂Y2O3/WO3对含酸性红B染料的废水处理进行了研究.探讨了光催化剂作用机理,讨论了光催化剂组成、光催化剂用量、试液pH值、双氧水用量、光照时间与酸性红B溶液脱色率的关系.实验结果表明:w(Y2O3)=3.0%,50mL试液起始质量浓度为20mg.L-1,催化剂用量为0.4g,pH=6.0,双氧水用量为7.35mmol.L-1,光照6h,酸性红B溶液的脱色率可达99.3%.

Waste water containing acid red B （ARB） was treated with Y2O3/WO3. The reaction mechanism of photocatalysis was studied. The relations of the composition and amount of heterogeneous photocatalyst, pH value of solution, H2O2 amount and illumination time with the decolorizing rate of ARE were discussed, The results showed that the decolorizing rate of ARB could reach 99.3% by using Y2O3/WO3 as heterogeneous photocatalyst with the Y2O3 mass fraction of 3.0% in Y2O3/WO3, 50mL of 20mg·L^-1 ARB （initial concentration）, the catalyst mass of 0.4 g, pH 6.0, the H2O2 amount of 7.35 mmol·L^-1, and the illumination time of 6 h.