Abstract
Vanadium pentoxide (V2O5)/molybdenum trioxide (MoO3) composites with different molar ratios of vanadium (V) to molybdenum (Mo) were synthesized via a simple electrospinning technique. The photocatalytic activity of the composites were evaluated by their ability to photodegrade methylene blue and dimethyl phthalate (DMP) under visible-light irradiation. Compared with pure V2O5 and MoO3, the V2O5/MoO3 composites showed enhanced visible-light photocatalytic activity because of a V 3d impurity energy level and the formation of heterostructures at the interface between V2O5 and MoO3. The optimal molar ratio of V to Mo in the V2O5/MoO3 composites was found to be around 1/2. Furthermore, high-performance liquid chromatographic monitoring revealed that phthalic acid was the main intermediate in the photocatalytic degradation process of DMP.
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