Preparation of CuO-Decorated Core-Shell Montmorillonite-TiO_2 Colloids and Their Photocatalytic Activity for Hydrogen Evolution from Water

摘要

CuO-decorated core-shell montmorillonite-TiO_2 colloids were prepared and characterized with transmission electron microscope, powder X-ray diffraction analysis, Brunauer-Emmett-Teller analysis and UV-vis spectrua. Meanwhile, their photocatalytic activity for hydrogen evolution from water was explored under UV irradiation using methanol as a sacrificial reagent. The results indicate that they are an efficient photocatalyst with a rate of H_2 evolution of 219μmol·h~(-1)·g-~(-1) which is higher than that of anatase TiO_2 nanoparticles.