TiO₂ photocatalyst is one of the advanced oxidation process strategy which may be very potential to be implemented to deal with wastewater. The properties of the organic solvents and alkoxide precursors can impose significant effects on the final products’ microstructures and properties of TiO₂. In this case, two organic compounds, ethanol, and methanol were selected for sol-gel synthesis. Besides these two solvents, two precursors, tetra isopropyl orthotitanate and tetra-n-butyl orthotitanate were used. Attention was paid to the structure, bad-gap, morphology, and photocatalytic activity of the samples. XRD confirmed the anatase crystal structure for all samples. The formation of brookite phase was facilitated by the use of tetra isopropyl orthotitanate with ethanol as solvent. The photoluminescence spectra displayed a broad, intense emission in the upper UV region. A band-gap near the theoretical band-gap at 3.2 eV was observed; hence, the photoactivity will occur in the ultraviolet area. TNBm was observed to have a higher percentage (66.5%) and a higher rate (0.5/min) of methylene blue degradation to test the photoactivity of synthesized TiO₂ NPs.

TiO ₂光催化剂是先进的氧化工艺策略之一，对于处理废水可能具有很大的潜力。有机溶剂和醇盐前体的性质会对最终产品的TiO ₂的微观结构和性质产生重大影响。在这种情况下，选择两种有机化合物乙醇和甲醇进行溶胶-凝胶合成。除了这两种溶剂之外，还使用了两种前体：原钛酸四异丙酯和原钛酸四正丁酯。注意样品的结构，缺陷，形态和光催化活性。XRD证实了所有样品的锐钛矿晶体结构。通过使用原钛酸四异丙酯和乙醇作为溶剂来促进板钛矿相的形成。光致发光光谱在上部紫外线区域显示出宽广的强发射。在3.2 eV处观察到接近理论带隙的带隙；因此，光活性将发生在紫外线区域。观察到TNBm的百分比更高（66.5％），比率更高（0。_2个NP。