Mesoporous SBA-15 and x% WO₃-SBA-15 (X = 2.7 %, 5.5 %, 8.3 % and 11.1 %) catalysts were synthesized by hydrothermal in-situ method. All the synthesized catalysts were subjected to different analytical techniques such as XRD, FT-IR, BET, XPS, FE-SEM, EDX, HR-TEM, DRS-UV and PL. The HR-TEM images showed that WO₃ species were highly dispersed in the uniform pore channels of SBA-15. Photo decolorization activity of the bare and composite catalysts measured in the degradation of harmful dyes such as rhodamine B (RhB), methylene blue (MB) and crystal violet (CV) under UV, visible and solar light irradiations. Among the catalysts, 5.5 % WO₃-SBA-15 exhibited the highest photocatalytic activity (81 %, 90 %, and 77 %) towards the degradation of RhB, MB and CV dyes under visible light irradiation. TOC and COD studies indicated that the three dyes chosen for the present study were all degraded to large extent. The trapping experiment confirmed that the major species responsible for the photocatalytic degradation of different dyes over 5.5 % WO₃-SBA-15 catalysts were found to be h⁺ and O₂⁻. The stability of the most active catalysts 5.5 % WO₃-SBA-15, was determined by the recyclability test. A suitable mechanism was proposed based on experimental evidence.

通过水热原位法合成了介孔SBA-15和x％WO ₃ -SBA-15（X = 2.7％，5.5％，8.3％和11.1％）催化剂。所有合成的催化剂都经过不同的分析技术，如XRD，FT-IR，BET，XPS，FE-SEM，EDX，HR-TEM，DRS-UV和PL。HR-TEM图像显示WO ₃物种高度分散在SBA-15的均匀孔道中。在紫外线，可见光和太阳光照射下，裸露和复合催化剂的光脱色活性可通过有害染料如若丹明B（RhB），亚甲基蓝（MB）和结晶紫（CV）的降解来测量。在催化剂中，5.5％WO ₃-SBA-15在可见光照射下对RhB，MB和CV染料的降解表现出最高的光催化活性（81％，90％和77％）。TOC和COD研究表明，为本研究选择的三种染料都在很大程度上降解。捕集实验证实，负责在5.5％WO不同的染料的光催化降解的主要种类₃ -SBA-15的催化剂被发现为h ⁺和O ₂ ^- 。5.5％WO ₃ -SBA-15活性最高的催化剂的稳定性通过可回收性测试确定。根据实验证据提出了一种合适的机理。