In this study, tungsten trioxide/titanium dioxide (WO₃–TiO₂) nanohybrid structures were prepared using a facile hydrothermal method. The nanosheets-like morphology was achieved for the prepared WO₃–TiO₂ nanohybrid that were confirmed by scanning electron microscopy. Provided X-ray photoelectron spectroscopy results also confirm the element existence and surface composition of the nanohybrid structure. The optical properties of the WO₃–TiO₂ nanohybrid were verified using UV–Visible diffuse reflectance spectroscopy (UV–Vis DRS) and photoluminescence spectroscopy. The UV–Vis DRS results indicated that the absorption edge for the WO₃–TiO₂ nanohybrid found a red shift towards the visible region due to the reduced bandgap (2.83 eV). The photocatalytic activity of the as-prepared WO₃–TiO₂ nanohybrid was evaluated by the photocatalytic degradation of Orange G dye in wastewaters under visible light. 94% Orange G dye was degraded in 210 min at neutral pH in the presence of WO₃–TiO₂ nanohybrid, which indicates the enhanced photocatalytic activity. The photo-luminescence technique has also confirmed the formation of –OH radicals during photodegradation by utilizing terephthalic acid as a probe molecule. These results indicate that the prepared nanohybrid material is a simple, low-cost, and efficient photocatalyst for the degradation of pollutants in wastewater treatment applications.

在这项研究中，使用简便的水热法制备了三氧化钨/二氧化钛（WO ₃ -TiO ₂）纳米杂化结构。制备的WO ₃ -TiO ₂纳米杂化物达到了纳米片状形态，这通过扫描电子显微镜得到了证实。提供的X射线光电子能谱结果还证实了纳米杂化结构的元素存在和表面组成。WO ₃ -TiO ₂纳米杂化物的光学性质通过紫外可见漫反射光谱法（UV-Vis DRS）和光致发光光谱法进行了验证。UV-Vis DRS结果表明，WO ₃ -TiO ₂的吸收边缘由于降低了带隙（2.83 eV），nanohybrid发现了一个向可见区域的红移。通过在可见光下对废水中的橙G染料进行光催化降解，评估了所制备的WO ₃ -TiO ₂纳米杂化物的光催化活性。在WO ₃ –TiO ₂存在下，在中性pH条件下，210分钟内94％的橙色G染料被降解纳米杂化物，表明光催化活性增强。通过使用对苯二甲酸作为探针分子，光致发光技术还证实了光降解过程中-OH自由基的形成。这些结果表明，所制备的纳米杂化材料是用于废水处理应用中的污染物降解的简单，低成本且有效的光催化剂。