CuO/ZnO复合光催化剂的制备和性能

Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst

以十六烷基三甲基溴化铵为生长调节剂用一步水热法合成了纳米CuO/ZnO复合光催化剂。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱仪(XPS)、荧光光谱仪(FL)和紫外-可见光谱仪(UV-Vis)等手段对其表征,在紫外光照射下研究了不同CuO配比的复合光催化剂对目标降解物甲基橙的光催化效果和循环稳定性。结果表明,CuO/ZnO复合光催化剂主要由CuO纳米颗粒和ZnO纳米片组成;引入适量的CuO可调节ZnO的光吸收性能,提高紫外光催化效率;过量(?7%)的CuO抑制ZnO的紫外光催化效率;CuO/ZnO在光催化过程中具有良好的稳定性。

Nanocomposites of CuO/ZnO were synthesized with cetyltrimethylammonium bromide as a growth regulator by one-step hydrothermal method. The catalyst was characterized by X-ray diffractometry(XRD), scanning electron microscopy(SEM), X-ray photoelectron spectroscopy(XPS), fluorescence spectrometer(FL) and UV-Vis spectrometer(UV-Vis). The photocatalytic effect of the composite photocatalyst with different ratios of CuO to ZnO on the degradation efficiency of methyl orange under ultraviolet light irradiation, and the cyclic stability of the composite photocatalyst were investigated. The results show that CuO/ZnO photocatalysts are mainly composed of CuO nanoparticles and ZnO nanosheets.The proper amount of CuO can effectively adjust the light absorption performance of ZnO and enhance the efficiency of ultraviolet photocatalysis. Excess CuO(>7%) has inhibitory effect on ZnO ultraviolet catalytic efficiency. CuO/ZnO has good stability in the photocatalytic process.