【摘要】 通过二步法(阳极氧化法和水热法)得到结构规则、有序核-壳结构的TiO2/ZnO纳米复合材料,并利用SEM、UV-vis、TEM等方法对所制备的纳米复合材料进行了表征。以甲基橙为目标降解物,自然光为光源,研究了TiO2/ZnO纳米光催化剂的光催化活性。结果表明,TiO2/ZnO复合光催化剂能提高对太阳光的利用率,发现在降解液pH值为3、太阳光催化降解5 h时,催化剂的降解效果最好,降解率达90%。更多还原

【Abstract】 Highly ordered TiO2/ZnO nanocomposites with core-shell structure were successfully fabricated by a two-step method(anodic oxidation and hydrothermal method).The nanocomposites were analyzed by means of a scanning electron microscope(SEM),double beam UV-vis spectrophotometer and transmission electron microscope(TEM).The photocatalytic activity of the prepared material was tested by taking methyl orange as a pollutant on the model and natural light as the light source.The results showed that,TiO2/ZnO composite photocatalyst could improve the utilization of sunlight,and could show the best catalytic activity under the condition of pH=3 solution and degraded under the sun for 5 hours,which reached to 90%.更多还原