采用模板法以钛酸丁酯为钛源,SiO2为模板球,制备出了TiO2包覆SiO2微球。利用SEM、TEM、XRD、EDS对样品形貌、结构和成分进行了表征分析,并测试了样品的光催化性能。结果表明TiO2@SiO2微球的光催化性能优于用相同方法制得的TiO2的光催化性能,当使用TiO2@SiO2微球为光催化剂时,在光照180min后甲基橙的降解率达到82%,而相同方法制得的TiO2为56%,较后者提高了26%,具有良好的光催化活性。
In this article,TBOT was used as titanium source and SiO2 spheres as template to prepare core/shell TiO2@SiO2 microspheres.The products were characterized by SEM,XRD,EDS and their photocatalytic property was measured.It was found that the photocatalytic activity of TiO2@SiO2 was better than pure TiO2 nanoparticles which prepared by the same method without SiO2 template.When using TiO2 @ SiO2 as photocatalyst,the degradation rate of methyl orange can reach 82%,but pure TiO2 only reach 56% after 180min photocatalysis efficiency increased by 26%,it indicate the products have good photocatalytic performance.
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