Abstract Vanadium sensitized silver titanium mixed metal (V–Ag/TiO2) oxides photocatalyst nanocomposite was prepared by a sol-gel, hydrothermal route. Lattice fringes for both anatase and rutile in its crystalline phase was depicted by X-Ray Diffraction (XRD) structural analysis. Surface areas (SBET) analysis shows that synthesized V–Ag/TiO2 has a huge surface area of 74.58 m2g-1, compare to TiO2 94.77 m2g-1, Ag–TiO2 89.32 m2g-1 and V–TiO2 82.59 m2g-1. Optical absorption results demonstrated by UV–Visible Spectroscopy (UV–Vis) shows a reduced bandgap energy of 2.3 eV and a shift in spectrum to the visible light region, enhancing the visible light absorption capacity of the synthesized photocatalyst. Binding energies of species were presented by X-ray photoelectron spectroscopy (XPS). Scanning electron microscope (SEM) image shows the formation of a closely stacked cluster composed of rod-like aggregated particles of non-uniform diameter while Transition Electron Microscope (TEM) shows particle size distribution range between 15 and 25 nm. Synthesized V–Ag/TiO2 showed tremendous photocatalytic abilities under visible light irradiation as gas chromatography–mass spectrometry (GC–MS) analysis of surface water from Lepelle River Limpopo province of South Africa demonstrate the selective removal of organic pollutant.

中文翻译：

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钒敏化银钛氧化物（V-Ag/TiO2）光催化剂纳米复合材料的简便制备，用于去除河水中的污染物

摘要 通过溶胶-凝胶、水热法制备了钒敏化银钛混合金属（V-Ag/TiO2）氧化物光催化剂纳米复合材料。X 射线衍射 (XRD) 结构分析描绘了晶相中锐钛矿和金红石的晶格条纹。表面积 (SBET) 分析表明，与 TiO2 94.77 m2g-1、Ag-TiO2 89.32 m2g-1 和 V-TiO2 82.59 m2g-1 相比，合成的 V-Ag/TiO2 具有 74.58 m2g-1 的巨大表面积。紫外-可见光谱 (UV-Vis) 显示的光吸收结果显示带隙能量降低了 2.3 eV，光谱向可见光区域移动，增强了合成光催化剂的可见光吸收能力。物种的结合能通过 X 射线光电子能谱 (XPS) 呈现。扫描电子显微镜 (SEM) 图像显示了由直径不均匀的棒状聚集颗粒组成的紧密堆积簇的形成，而过渡电子显微镜 (TEM) 显示的粒度分布范围在 15 到 25 nm 之间。合成的 V-Ag/TiO2 在可见光照射下显示出巨大的光催化能力，因为对南非莱佩勒河林波波省地表水的气相色谱-质谱 (GC-MS) 分析证明了有机污染物的选择性去除。