TiO2/Fe3O4复合光催化剂的制备、表征及光催化性能研究

摘要

采用化学共沉淀法制备磁性纳米Fe3O4作为磁载体,以溶胶-凝胶法制备TiO2/Fe3O4复合光催化剂,采用XRD、红外光谱分析等手段对其表征.以亚甲基蓝水溶液为模拟污染物,测试TiO2/Fe3O4复合光催化剂的光催化性能,光照30分钟后,亚甲基蓝的脱色率可达到96.5％.汞灯照射下催化剂的重复循环三次的效率也可以达到95％,通过多次循环利用催化剂测试亚甲基蓝的降解率,TiO2具有较高的光稳定性和反应活性,是一个能高效光催化降解有机污染物的催化剂.%By chemical prepare magnetic Fe3O4 as the magnetic of TiO2 composite sol-gel chemical method prepare magnetic Fe3O4 as the magnetic carrier and preparation of TiO2/Fe3O4 composite by sol-gel method, performance test of TiO2/Fe3O4 composite, light after 30 minutes, blue rate can reach the catalyst 96.5 percent. light beam the catalyst cycle repeats 3 times the efficiency can also be reached 95 percent, and the many recycling catalyst test Blue degradation rate, TiO2 has a high optical stability and response reactive, and is an efficient light-catalyzed organic pollutants as a catalyst.