Preparation and photocatalytic activity of Fe-ZrO2 composites from UiO-66 precursor under visible light irritation
Ma Yali, Liu Ruxue, Meng Shuangyan, Niu Litong, Yang Zhiwang, Lei Ziqiang
College of Chemistry and Chemical Engineering, Northwest Normal University Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education Key Laboratory of Polymer Materials of Gansu Province Lanzhou, 730070
A new porous crystalline materials Zr-containing organic framework of UiO-66 has a large specific surface area, strong adsorption capacity, and the highly ordered arrangement of metal ions in its crystal structure. In this study, because UiO-66 has a good structural features, Fe-doped nano-ZrO2 photocatalyst of Fe-ZrO2 were successfully prepared by the adsorption of Fe3+ onto UiO-66, and calcination of the precursor of Fe3+/UiO-66, subsequently. The morphology and structure of the catalyst were characterized by scanning electron microscopy(SEM), X-ray diffractometry(XRD), X-ray photoelectron spectroscopy(XPS), N2 adsorption-desorption isotherm, Fourier transform infrared spectroscopy(FT-IR) and UV-Vis absorption spectroscopy(UV-Vis). The electrochemical performance of the catalyst was analyzed by fluorescence(PL) and electrochemical impedance spectroscopy. Finally, the photodegradation of rhodamine B solution by the catalysis of Fe-ZrO2 was studied. The results showed that the degradation rate of rhodamine B(RhB) under visible light irritation was 83% in 120 min with the catalyst of Fe-ZrO2 from the calcination of the precursor Fe3+/UiO-66. The catalyst had a promising stability. The degradation rate to RhB could still reach 78% after three cycles.