Photocatalysis is an extraordinary and vastly researched topic; there is a need to find new ways to support producing composite materials that are cost-effective, efficient and have a low environmental impact. The investigation was undertaken on syn TiO 2 by depositing it on silica. The results elucidate the positive effect on photocatalysis activity and the macroscopic structure on which the TiO 2 is formed. For the analysis of photocatalyst, various characterisation measurements were undertaken, such as XRD, FTIR, DRS, FESEM, TEM, RS, and BET. The accumulated TiO 2 onto the surface of SiO 2 stabilised its transformation of the phase from anatase to rutile, resulting in decreased particle size and enhancing its photocatalytic activity under UV irradiation. The concentration of OH• radicals was determined using terephthalic acid as a probe molecule to determine its role in the photocatalytic degradation of antihistamine. The results of BET analysis showed that the syn TiO 2 -SiO 2 sample has a large specific surface area of 192.6 m 2 g −1 . Maximum degradation of cetirizine (about 97%) was achieved with 80% TiO 2 -20% SiO 2 (TS-4). Recyclability test confirmed that 80% TiO 2 -20% SiO 2 sample was stable up to six cycles.

中文翻译：

---

紫外光下TiO2-SiO2光催化剂高效光降解西替利嗪抗组胺药

光催化是一个非凡且广泛研究的课题。需要找到新的方法来支持生产具有成本效益、高效且对环境影响小的复合材料。通过将 syn TiO 2 沉积在二氧化硅上进行研究。结果阐明了对光催化活性和形成TiO 2 的宏观结构的积极影响。对于光催化剂的分析，进行了各种表征测量，例如 XRD、FTIR、DRS、FESEM、TEM、RS 和 BET。在SiO 2 表面上积累的TiO 2 稳定了其从锐钛矿到金红石的相转变，导致粒径减小并增强其在UV照射下的光催化活性。使用对苯二甲酸作为探针分子测定 OH• 自由基的浓度，以确定其在抗组胺光催化降解中的作用。BET分析结果表明，syn TiO 2 -SiO 2 样品具有192.6 m 2 g -1 的大比表面积。使用 80% TiO 2 -20% SiO 2 (TS-4) 可实现最大程度的西替利嗪降解（约 97%）。可回收性测试证实，80% TiO 2 -20% SiO 2 样品在最多六个循环中是稳定的。