Abstract
In recent years, many semiconductor materials have been applied to the photocatalysis technology. As a semiconductor with wide band gap (3.37 eV), ZnO has received extensive attention in the photocatalytic degradation of organic pollutants due to its rich morphology, low cost and other advantages. However, due to the wide band gap of ZnO, it can only absorb ultraviolet light (accounting for about 4% of the whole solar spectrum), which has greatly limited the application of ZnO semiconductor materials. BiOI/ZnO binary complexes were synthesized by simple hydrothermal and solvothermal methods. Their phenol degradation activities were tested under different light sources. The mechanism of photocatalytic degradation of phenol was reasonably explained by free radical trapping experiment, surface photovoltage, transient photovoltage, fluorescence and other tests.
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