Abstract
Abstract The metal oxide V 2 O 5 (band gap 2.0 eV) is potentially active in solar light for photocatalysis reactions. However, the rapid electron–hole pair recombination makes it inactive. The doping of V 2 O 5 into MgF 2 (band gap 6.2 eV) matrix reduces the recombination rate of electron–hole pairs and makes VO x /MgF 2 have high photon quantum efficiency (3.2% at 578 nm over 9.1%VO x /MgF 2 for acetone oxidation). The Pt doped 9.1%VO x /MgF 2 catalysts had even higher photon quantum efficiency (34.6% at 578 nm) for acetone oxidation. The VO x /MgF 2 and Pt doped VO x /MgF 2 catalysts were also proved to be active for methanol, ethanol, and benzene photodegradation.
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