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采用两步模板法,通过制备二氧化硅胶体晶体模板,以钛酸异丙酯为钛源和三嵌段共聚物P123为介孔导向合成介孔钛硅氧化物光子晶体微球光催化剂。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)对制得的薄膜材料的结构进行表征。结果表明,介孔复合薄膜中锐钛矿型TiO2纳米粒子均匀排列。以罗丹明B为模型物,考察其在紫外光区的光催化活性。结果表明,钛硅氧化物光催化剂降解效果比普通TiO2薄膜有所提高。
A two-step template method was used to prepare the mesoporous titanosilicate photonic crystal microsphere photocatalyst by preparing a silica colloidal crystal template with isopropyl titanate as titanium source and triblock copolymer P123 as mesopore. The structure of the prepared thin film material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The results show that anatase TiO2 nanoparticles are uniformly arranged in the mesoporous composite film. Rhodamine B was used as a model to investigate its photocatalytic activity in the ultraviolet region. The results show that titanium dioxide photocatalyst degradation effect than ordinary TiO2 film has increased.