Pure tungsten oxide (WO₃) nanoparticles (NPs) and WO₃/copper tungstate (CuWO₄) nanocomposites (NCs) were prepared by varying copper content from (5–20 wt%) via the co-precipitation process. XRD results reveal that the structural parameters of WO₃/CuWO₄ NCs have been strongly affected via Cu doping. Morphology of synthesized WO₃ was noticed to be distinct and particle size was significantly reduced through Cu doping confirmed by employing HRTEM studies. Elemental purity of as synthesized products, elucidated from EDX and XPS analyses, reveals that WO₃/CuWO₄ nanocomposites contain W, O and Cu elements only. Also, FT-IR spectra and its corresponding assignments indicate the existence of WO₃/CuWO₄. UV-Visible study shows that WO₃/CuWO₄ composites have narrow bandgap compared to pure WO₃. Photoluminescence spectral peaks intensity of NCs displays a decreasing trend, which supports the enhanced photocatalytic activity. The results clearly show that 20 wt% Cu incorporated WO₃ sample exhibits better photocatalytic nature than that of pure WO₃ and will be more applicable in purify the water.

通过共沉淀过程改变铜含量（5-20​​ wt％）来制备纯氧化钨（WO ₃）纳米颗粒（NPs）和WO ₃ /钨酸铜（CuWO ₄）纳米复合材料（NCs）。XRD结果表明，WO ₃ / CuWO ₄ NCs的结构参数受到Cu掺杂的强烈影响。注意到合成的WO _3的形态是不同的，并且通过采用HRTEM研究证实通过Cu掺杂显着减小了粒径。通过EDX和XPS分析阐明的合成产物的元素纯度表明，WO ₃ / CuWO ₄纳米复合材料仅包含W，O和Cu元素。同样，FT-IR光谱及其相应的赋值表明存在WO ₃ / CuWO ₄。紫外可见研究表明，与纯WO ₃相比，WO ₃ / CuWO ₄复合材料的带隙较窄。NC的光致发光光谱峰强度显示出下降的趋势，这支持增强的光催化活性。结果清楚地表明，掺入20 wt％Cu的WO ₃样品比纯WO ₃表现出更好的光催化特性，并且更适用于净化水。