In this study, highly active titanium dioxide modified by niobium oxide (Nb₂O₅), polymer (PANI) and reduced graphene oxide (RGO) were successfully prepared. The morphology, structure, surface area and light absorption properties of the present nanocomposites for removal of methylene blue (MB) and methyl orange (MO) were investigated and compared with those of TiO₂/Nb₂O₅ and TiO₂ nanoparticles. The characterization techniques such as XRD, FT-IR, UV-Vis, SEM, EDX, BET and TEM were employed in order to identify the nanocomposites. Also, photocatalytic properties of TiO₂/Nb₂O₅/PANI and TiO₂/Nb₂O₅/RGO nanocomposites under visible light irradiation were studied. In this way, the obtained results were compared to each other and also compared to TiO₂/Nb₂O₅ and TiO₂ nanoparticles. In this context, the chemical oxygen demand (COD) removal follows the photodegradation in observed performance. The results indicate that reduced TiO₂/Nb₂O₅ nanocomposite is effectively modified by graphene oxide to give TiO₂/Nb₂O₅/RGO composite. The TiO₂/Nb₂O₅/RGO exhibits significantly higher photocatalytic activity in degradation of organic dyes under visible light rather than that of TiO₂/Nb₂O₅/PANI, TiO₂/Nb₂O₅ and pure TiO₂.

在这项研究中，成功制备了由氧化铌（Nb ₂ O ₅），聚合物（PANI）和还原型氧化石墨烯（RGO）改性的高活性二氧化钛。研究了用于去除亚甲基蓝（MB）和甲基橙（MO）的本纳米复合材料的形态，结构，表面积和光吸收性质，并将其与TiO ₂ / Nb ₂ O ₅和TiO ₂纳米粒子的形态，结构，表面积和光吸收性质进行了比较。为了鉴定纳米复合材料，采用了XRD，FT-IR，UV-Vis，SEM，EDX，BET和TEM等表征技术。此外，TiO ₂ / Nb ₂ O ₅ / PANI和TiO _2的光催化性能研究了可见光下的/ Nb ₂ O ₅ / RGO纳米复合材料。以这种方式，将获得的结果彼此进行比较，并且还与TiO ₂ / Nb ₂ O ₅和TiO ₂纳米颗粒进行比较。在这种情况下，化学需氧量（COD）的去除遵循观察到的性能中的光降解。结果表明，氧化石墨烯可以有效地还原还原的TiO ₂ / Nb ₂ O ₅纳米复合材料，得到TiO ₂ / Nb ₂ O ₅ / RGO复合材料。TiO ₂ / Nb ₂ O ₅/ RGO在可见光下对有机染料的降解表现出比TiO ₂ / Nb ₂ O ₅ / PANI，TiO ₂ / Nb ₂ O ₅和纯TiO ₂更高的光催化活性。