State Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry, Jilin University, Changchun 130023, China.
ACS Appl Mater Interfaces. 2011 Aug;3(8):3167-71. doi: 10.1021/am200664y. Epub 2011 Jul 20.
Bi(2)WO(6)/ZnWO(4) composite photocatalysts have been successfully synthesized by a facile hydrothermal process. The catalysts were characterized by powder X-ray diffraction (XRD), transmission electron microcopy (TEM), and UV-vis diffuse reflectance spectrum (DRS). The results show that Bi(2)WO(6) nanoparticles grow on the primary ZnWO(4) nanorods. The Bi(2)WO(6)/ZnWO(4) composites have better UV light photocatalytic activities compared to single ZnWO(4) nanorods. Furthermore, the photoinduced charge transfer properties of Bi(2)WO(6)/ZnWO(4) composites were investigated by means of transient photovoltage (TPV) technique in detail. The interconnected interface of Bi(2)WO(6)/ZnWO(4) composites led to the low recombination ratios of photoinduced electron-hole pairs and enhanced photocatalytic activities.
采用简便的水热法成功合成了 Bi(2)WO(6)/ZnWO(4) 复合光催化剂。通过粉末 X 射线衍射 (XRD)、透射电子显微镜 (TEM) 和紫外-可见漫反射光谱 (DRS) 对催化剂进行了表征。结果表明，Bi(2)WO(6) 纳米颗粒生长在初级 ZnWO(4)纳米棒上。与单一 ZnWO(4)纳米棒相比，Bi(2)WO(6)/ZnWO(4) 复合材料具有更好的紫外光光催化活性。此外，还通过瞬态光电压 (TPV) 技术详细研究了 Bi(2)WO(6)/ZnWO(4) 复合材料的光生电荷转移特性。Bi(2)WO(6)/ZnWO(4) 复合材料的互连界面导致光生电子-空穴对的复合率降低，从而增强了光催化活性。
