Abstract
In the paper, we have systematically studied compounds of Co/TiO 2 and Co/Pd/TiO 2 by sol–gel method. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results indicate that Co promotes the anatase to rutile phase transition, on the contrary, Pd inhibits the phase transition. In order to study the reason that Co/TiO 2 and Co/Pd/TiO 2 have the different phase transition temperature, ab initio calculations are used for the study of the Co/TiO 2 and Co/Pd/TiO 2 system. The calculation results show good agreement with the experiments.
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