Abstract Herein, efficient ZnWO4/g-C3N4 hybrid photocatalysts with effective interfaces were designed by controlling the surface charges of the two individual materials via facile hydrothermal method. The photocatalysts were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), Energy dispersive X-ray (EDX) analysis, Raman, N2 adsorption-desorption, Photoluminescence spectroscopy (PL) and UV–Vis diffuse reflectance spectra analysis. XRD and TEM results indicate the reasonable existence of g-C3N4 (001)-ZnWO4 (010) interfaces. The incorporated g-C3N4 layer has shown a great impact on the structure and properties, including lattice expansion, band-gap narrowing, luminescence enhancement, as well as photocatalytic activity. Visible light induced photocatalytic degradation test was carried out for all the synthesized catalysts towards rhodamine B (RhB) and 4-chlorophenol (4-CP) dyes. The results reveal that the hybrid catalyst show outstanding degradation efficiency of 99%, high apparent constant (0.0931 min−1) and long term stability towards RhB dye under visible light irradiation. The degradation efficiency is only ~41 and 47% for the pure g-C3N4 and ZnWO4 catalysts, respectively. The synergic effect between these hybrid materials photocatalytic mechanism was also discussed in brief.

中文翻译：

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石墨氮化碳（g-C3N4）修饰的ZnWO4异质结结构合成、表征和光催化活性评价

摘要 在此，通过简单的水热法控制两种单独材料的表面电荷，设计了具有有效界面的高效 ZnWO4/g-C3N4 杂化光催化剂。通过 X 射线衍射 (XRD)、透射电子显微镜 (TEM)、能量色散 X 射线 (EDX) 分析、拉曼、N2 吸附-解吸、光致发光光谱 (PL) 和紫外-可见漫反射光谱分析对光催化剂进行表征. XRD 和TEM 结果表明g-C3N4 (001)-ZnWO4 (010) 界面的合理存在。掺入的 g-C3N4 层对结构和性能有很大影响，包括晶格膨胀、带隙变窄、发光增强以及光催化活性。对所有合成的催化剂对罗丹明 B (RhB) 和 4-氯苯酚 (4-CP) 染料进行了可见光诱导光催化降解试验。结果表明，混合催化剂在可见光照射下表现出 99% 的出色降解效率、高表观常数 (0.0931 min-1) 和对 RhB 染料的长期稳定性。纯 g-C3N4 和 ZnWO4 催化剂的降解效率分别仅为~41% 和 47%。还简要讨论了这些杂化材料光催化机理之间的协同效应。纯 g-C3N4 和 ZnWO4 催化剂的降解效率分别仅为~41% 和 47%。还简要讨论了这些杂化材料光催化机理之间的协同效应。纯 g-C3N4 和 ZnWO4 催化剂的降解效率分别仅为~41% 和 47%。还简要讨论了这些杂化材料光催化机理之间的协同效应。