TiO₂-RGO (TG) nanocomposite applied as photocatalysts have been synthesized via a facile low-temperature wet chemistry process, during which the reduction of graphene oxide (RGO) and the growth of titanium dioxide (TiO₂) nanoparticles on the RGO nanosheets are achieved simultaneously. RGO role in TG nanocomposites as photocatalysts were analyzed in methylene blue photocatalytic degradation under UV and solar irradiation. The TG nanocomposites were characterized by X-ray photoelectron spectroscopy, X-ray diffraction, Raman spectroscopy and transmission electron microscopy. The photocatalytic efficiency of the TG-30 sample under UV and TG-45 solar irradiation was ∼7 and ∼5 times that of pristine TiO₂, respectively. The enhancement of the photocatalytic activity with UV irradiation in TG was attributed to the high separation efficiency of photoinduced electron–hole pairs, while the enhancement of photocatalytic activity with solar irradiation in the TG was attributed to RGO role, acted as a photosensitizer and a charges separator, simultaneously.

TiO ₂ -RGO（TG）纳米复合材料用作光催化剂是通过一种简便的低温湿化学工艺合成的，在该过程中，氧化石墨烯（RGO）的还原和二氧化钛（TiO ₂）纳米颗粒在RGO纳米片上的生长是可行的。同时实现。分析了RGO在TG纳米复合材料中作为光催化剂的作用，分析了其在紫外线和太阳光下的亚甲基蓝光催化降解。TG纳米复合材料的特征在于X射线光电子能谱，X射线衍射，拉曼光谱和透射电子显微镜。TG-30样品在紫外线和TG-45日光照射下的光催化效率分别为原始TiO _2的约7倍和约5倍， 分别。TG中紫外线辐射增强光催化活性归因于光致电子-空穴对的高分离效率，而TG中太阳辐射增强光催化活性归因于RGO的作用，起着光敏剂和电荷的作用。分隔符，同时。