In the present work, we report the development of a WSe₂–Graphene–TiO₂ ternary nanocomposite via ultrasonic techniques and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The band-gap of the WSe₂–Graphene–TiO₂ was estimated to be about 1.62 eV which is suitable for photodegradation process under under ultraviolet UV/ Visible light irradiation. The photocatalytic potential of nanocomposites is investigated for CO₂ reduction to CH₃OH. WSe₂–G–TiO₂ with an optimum loading of graphene of 8 wt% showed the high photoactivity, gaining a total CH₃OH yield of 6.3262 µmol g^-1h^-1 after 48 h. This excellent photoreduction activity is owing to the progressive synergistic relation between WSe₂/TiO₂ and graphene components in our heterogeneous system.

在目前的工作中，我们通过超声波技术报告了WSe _2-石墨烯-TiO ₂三元纳米复合材料的开发，并通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），X-射线光电子能谱（XPS）和拉曼光谱。据估计，WSe _2-石墨烯-TiO ₂的带隙约为1.62 eV，适用于紫外线/可见光下的光降解过程。研究了纳米复合材料对CO ₂还原成CH ₃ OH的光催化潜力。WSe ₂ –G–TiO ₂最佳负载量为8 wt％的石墨烯显示出较高的光活性，在48 h后获得的总CH ₃ OH产量为6.3262μmolg ^-1 h ^-1。这种优异的光还原活性是由于我们的异质体系中WSe ₂ / TiO ₂与石墨烯组分之间的逐步协同关系。