A series of silica based nano-composites has been synthesized by an impregnation and co-impregnation method namely Ti-SiO₂, Ce-SiO₂, 20Ti-Ce-SiO₂ and 40Ti-Ce-SiO₂. The prepared photo-catalysts have been characterized by XRD, S_BET, FT-IR, FE-SEM, XPS and optical techniques. The activity of the prepared photo-catalysts was evaluated using Fuchsine acid dye under UV and visible exposure. The degradation percentage and apparent first order kinetics were calculated. The scavengers test analysis was carried out to know the key role of reactive species which takes part in the photo-catalytic degradation. The Ce-SiO₂ exhibited an excellent photo-catalytic activity of Fuchsine acid (FA) dye degradation under visible light. The photo-degradation rate (k) of the synthesized samples was 1.1x10^-2 min^-1 with R² of 0.98 for Ce-SiO₂ photo-catalyst. As observed in the scavengers experimental results, the (h⁺) and (O₂^•−) principally participate in the dye degradation over Ce-SiO₂ nano-compoiste, whereas (^•OH) participates in minor extent.

一系列基于二氧化硅纳米复合材料已通过浸渍和共浸渍方法合成即钛的SiO ₂，CE-的SiO ₂，20Ti-Ce的的SiO ₂和40Ti-Ce的的SiO ₂。通过XRD，S _BET，FT-IR，FE-SEM，XPS和光学技术对制备的光催化剂进行了表征。使用品红酸性染料在紫外线和可见光下评估制备的光催化剂的活性。计算了降解百分比和表观一级动力学。进行了清除剂测试分析，以了解参与光催化降解的反应性物质的关键作用。铈-SiO ₂在可见光下显示出出色的品红酸（FA）染料降解光催化活性。Ce-SiO ₂光催化剂的合成样品的光降解速率（k）为1.1x10 ^-2 min ^-1，R ²为0.98 。如清除剂实验结果所示，（h ⁺）和（O ₂ ^•-）主要参与染料在Ce-SiO ₂纳米复合材料上的降解，而（^• OH）参与程度较小。