氧化锌/硅藻土复合材料光催化性能研究

Research on the Photocatalytic Activity of ZnO/Diatomite Composite

通过直接沉淀法制备氧化锌(ZnO)及氧化锌/硅藻土复合材料。通过扫描电镜看出,制备了形貌良好的纳米氧化锌;通过红外光谱看出,出现了氧化锌的吸收峰.硅藻土含量为60%,烧结温度为300℃时,氧化锌/硅藻土复合材料对亚甲基蓝的光催化降解效果最好。经过改性后的氧化锌/硅藻土复合材料光催化效果更好,稳定性得到了提高,重复使用不影响光催化效率。

Preparation of ZnO/diatomite composite material,testing its photocatalytic properties.Prepared by direct precipitation ZnO and ZnO/diatomite composite material,Characterization of the composite material,to analysis photocatalytic activity of the composite material that degrades of methylene blue solution.Demonstrated by scanning electron microscopy(SEM),zinc oxide with good morphology were prepared;demonstrated by FTIR,appeared the absorption peak of ZnO.When diatomite with content of 60% and the sintering temperature of 300 ℃,ZnO/diatomite composite material have the best absorption effecting on UV.By direct precipitation method for preparing good morphology ZnO and ZnO/diatomite composite material.The photodegradation efficiency of Composite photocatalyst that modified by diatomite is improved.