中南大学学报（英文版）
中南大學學報（英文版）
중남대학학보（영문판）
Journal of Central South University
2015年
11期
4105-4111
,共7页
meso-macroporous Fe-doped CuO%adsorption%photocatalytic activity
The meso-macroporous Fe-doped CuO was prepared by a simple hydrothermal method combined with post-annealing. The samples were characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), Brunauer?Emmett?Teller N2 adsorption?desorption analyses and UV-vis diffuses reflectance spectroscopy. The Fe-doped CuO sample shows higher adsorption capacity and photocatalytic activity for xanthate degradation than pure CuO under visible light irradiation. In addition, the adsorption process is found to fit Langmuir isotherms and pseudo-second-order kinetics. The the first order kinetic Langmuir Hinshelwood model was used to study the reaction kinetics of photocatalytic degradation, and the apparent rate constant (k ) was calculated. The value ofk for Fe-doped CuO is 1.5 times that of pure CuO. The higher photocatalytic activity of Fe-doped CuO is attributed to higher specific surface area together with stronger visible light absorption.
