Study on photocatalytic activity of MoS₂/ZnO composite in visible light

【摘要】 A series of MoS₂/ZnO compound photocatalysts with different mass ratios were successfully prepared by hydrothermal method. The X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, scanning electron microscope（SEM） and UV-vis absorption were used to characterize the prepared MoS₂/ZnO photocatalysts. It was proved that the combination of Mo S2 and Zn O can increase the content of oxygen vacancies on surface of Zn O, thus improving the light absorption capacity in visible light region and reducing the band gap of Zn O. And the photocatalytic performance of Zn O was improved. Experimental results show that the MoS₂/ZnO（3 wt%） compound has the highest degradation rate for methylene blue（MB） under visible light, which means that it has the best photocatalytic activity among all the prepared samples.更多还原

【Abstract】 A series of MoS₂/ZnO compound photocatalysts with different mass ratios were successfully prepared by hydrothermal method. The X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, scanning electron microscope（SEM） and UV-vis absorption were used to characterize the prepared MoS₂/ZnO photocatalysts. It was proved that the combination of Mo S2 and Zn O can increase the content of oxygen vacancies on surface of Zn O, thus improving the light absorption capacity in visible light region and reducing the band gap of Zn O. And the photocatalytic performance of Zn O was improved. Experimental results show that the MoS₂/ZnO（3 wt%） compound has the highest degradation rate for methylene blue（MB） under visible light, which means that it has the best photocatalytic activity among all the prepared samples.更多还原