Abstract Highly photosensitive ZnO/WO3 photocatalysts were fabricated by wet impregnation of zinc oxide (ZnO) in different contents. Tungsten trioxide (WO3) was synthesized by hydrothermal route. The presence of ZnO inhibited the crystallization of WO3 and caused agglomeration of WO3 nanoparticles surface. The formation of Zn-O-W linkage was studied by X-ray photoelectron emission (XPS) and Fourier transforms Infra-red spectra (FTIR). These linkages were responsible for red shift of absorption peak of composites as compared to individual ZnO and WO3. The band gap was decreased due to incorporation of ZnO in WO3 which promoted the separation of photo-generated carriers. As a result, ZnO/WO3 composite showed extremely high efficiency for MO degradation in comparison with Degussa P25, pure ZnO and WO3. 2.0% ZnO/WO3 composite displayed the highest activity in photocatalytic decomposition of methyl orange (MO) dye.

中文翻译：

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ZnO/WO 3 纳米结构作为高效可见光催化剂

摘要 通过湿法浸渍不同含量的氧化锌(ZnO)制备了高光敏ZnO/WO3光催化剂。三氧化钨（WO3）是通过水热法合成的。ZnO 的存在抑制了 WO3 的结晶并导致了 WO3 纳米颗粒表面的团聚。通过 X 射线光电子发射 (XPS) 和傅立叶变换红外光谱 (FTIR) 研究了 Zn-OW 键的形成。与单独的 ZnO 和 WO3 相比，这些键是复合材料吸收峰红移的原因。由于在 WO3 中加入了 ZnO，促进了光生载流子的分离，因此带隙减小。因此，与 Degussa P25、纯 ZnO 和 WO3 相比，ZnO/WO3 复合材料显示出极高的 MO 降解效率。2.