三氧化钨光催化体系降解亚甲基蓝及反应级数的探讨

摘要

三氧化钨是一种半导体光催化剂，可用于降解水中污染物。在用三氧化钨作为光催化剂处理亚甲基蓝模拟废水的反应中，通过单因素和正交实验，确定最佳处理条件为三氧化钨用量50mg、反应时间40min、H2O2用量4mL。并通过动力学研究，确定在不同三氧化钨光催化反应体系中的降解反应级数。%Tungsten trioxide was a semiconductor photocatalyst which could be used for degradation of pollutants in water. In the treatment of methylene blue simulation wastewater, tungsten oxide was applied as a photocatalyst, and through the single factor and orthogonal experiments, the optimal processing conditions were obtained:tungsten trioxide content 50mg, reaction time 40min, the dosage of H2O2 4mL. By the kinetics study, the degradation reaction order was determined in different tungsten oxide photocatalysis reaction system.