A high bandgap of titanium dioxide (TiO₂) and a very high electron–hole recombination rate hindered its photocatalytic activity under a wide range of irradiation. Therefore, using nanoconjugate boosted the lifetime of the photogenerated charge carriers by donating an electron-accepting structure. The optimized weight of graphene oxide (GO) can enhance photocatalytic capabilities. Herein, composites of GO/TiO₂ (GO 4 and 8wt. %) were produced by hydrothermal technique followed by calcination at 400 °C. As a function of the graphene oxide (GO) concentration, these composites demonstrate photocatalytic solid decomposition of methylene blue (MB) dye under solar irradiation. The samples were analyzed using XRD, SEM, TEM, UV–Vis spectra, FTIR, and XPS. Operating TiO₂/GO(8wt.%) treated at 400 °C as a photocatalyst significantly enhanced the photocatalytic degradation of dyes compared to pure TiO₂ and/or other prepared samples, resulting in complete degradation of MB 97.8% within 11 min. The GO flakes' higher adsorption/photodegradation capacity and electron transfer capability are attributed to their higher specific surface area (62 m²/g) for this significant improvement in photocatalytic degradation.

二氧化钛（TiO ₂）的高带隙和非常高的电子-空穴复合率阻碍了其在大范围辐照下的光催化活性。因此，使用纳米共轭通过提供电子接受结构来提高光生电荷载流子的寿命。氧化石墨烯（GO）的优化重量可以增强光催化能力。在此，GO/TiO ₂复合材料（GO 4 和 8wt.%）通过水热技术制备，然后在 400 ℃下煅烧。作为氧化石墨烯 (GO) 浓度的函数，这些复合材料表现出在太阳辐射下亚甲基蓝 (MB) 染料的光催化固体分解。使用 XRD、SEM、TEM、UV-Vis 光谱、FTIR 和 XPS 对样品进行分析。操作 TiO _{2与纯 TiO 2}和/或其他制备样品相比，在 400 °C 下作为光催化剂处理的 /GO(8wt.%) 显着增强了染料的光催化降解，导致 MB 97.8% 在 11 分钟内完全降解。GO薄片较高的吸附/光降解能力和电子转移能力归因于其较高的比表面积（62 m ² /g），从而显着改善了光催化降解。