Abstract
Novel In2O3/g-C3N4 composite photocatalysts were prepared by a simple thermal polymerization process. The samples were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy with energy dispersive X-ray spectrometer, UV–vis diffuse reflection spectroscopy, Brunauer–Emmett–Teller surface area and thermogravimetric analysis. The prepared photocatalysts exhibited significantly enhanced photocatalytic performance towards the degradation of rhodamine B and 4-nitrophenol under visible light. The enhanced photocatalytic activity was generated from the matching energy levels of g-C3N4 and In2O3. It was found that holes (h+) and superoxide (•O2−) were the main reactive species in the photocatalytic degradation of rhodamine B.
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