WS_(2)-WO_(3)复合材料光催化降解亚甲基蓝的研究

Photocatalytic Degradation of Methylene Blue over WS_(2)-WO_(3) Composites

染料污染物进入水资源系统后,难以被自然降解,危害人体健康。光催化氧化技术由于可直接利用光能、无二次污染、减少能源消耗等特点成为治理废水的有效方法。通过调控合成温度和时间,对比研究不同WS_(2)-WO_(3)复合材料对亚甲基蓝溶液光催化降解的效率。结果显示,400℃煅烧1 h得到的复合材料在降解20 mg/L亚甲基蓝溶液时表现出最佳降解效果,降解速率分别是200℃、300℃、500℃和600℃煅烧1 h所得材料的1.73、1.93、1.79和2.39倍。

After dye pollutants enter the water resources system,they are difficult to degrade naturally and pose a threat to human health.Photocatalytic oxidation technology is an effective approach for wastewater treatment as it can directly utilize light energy,cause no secondary pollution,and reduce energy consumption.The photocatalytic degradation efficiency of different WS_(2)-WO_(3) composites for the methylene blue solution was investigated by adjusting the synthesis temperature and time.The results indicated that the degradation rate of the 20 mg/L methylene blue solution at 400℃for 1 h were 1.73,1.93,1.79,and 2.39 times that at 200℃,300℃,500℃,and 600℃for 1 h,respectively.