화학공학소재연구정보센터
International Journal of Hydrogen Energy, Vol.44, No.50, 27363-27378, 2019
CdS@3DOM TiO2-ZrO2 composites with high efficiency photocatalytic properties prepared by template method combined with in-situ self-assembly technology
The three-dimensional ordered macroporous composites CdS@3DOM TiO2-ZrO2 were prepared by the template method combined with in-situ self-assembly technique. The composition, structure, morphology and surface physicochemical properties of composites were characterized by XRD, XPS, UV-vis/DRS, SEM, TEM, HR-TEM, PL, N-2 adsorption-desorption and EIS tests. The results show that CdS@3DOM TiO2-ZrO2 composites have strong light absorption in the visible region. And the in-situ self-assembled CdS particles in the composite do not destroy the excellent open pore structure, and the introduction of CdS further improves the charge separation efficiency. The results of multi-mode photocatalytic degradation of CdS@3DOM TiO2-ZrO2 show that the photocatalytic properties of CdS@3DOM TiO2-ZrO2 composites are obviously enhanced. In addition, the hydrogen production of CdS@3DOM TiO2-ZrO2 can reach 1323 mu mol/g (8 h) in the photolysis of water experiment, which is 94.5 times than that of the commercially available P25, showing excellent photocatalytic performance. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.