Abstract
In this paprer, ZnO was loaded on SiO2 by sol-gel method. The prepared photocatalysts were characterized by BET, XRD, UV-Vis diffuse reflectance spectroscopy and surface photovoltage spectroscopy (SPS). The paper reveals that the photocatalytic activity of ZnO towards the decomposition of methyl orange can be greatly improved by loading ZnO on the surface of SiO2. 80% SiO2 possesses the best photocatalytic activity among the experimented compositions.
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