Abstract
Nano-sized Nb 2O 5/carbon cluster/Cr 2O 3 composite material was prepared by the calcination of NbCl 5/chromium acetylacetonate/epoxy resin complex under an argon atmosphere. The Pt-loaded Nb 2O 5/carbon cluster/Cr 2O 3 composite material shows the photocatalytic activity under visible light irradiation. The composite material successfully decomposed the water into H 2 and O 2 in the [H 2]/[O 2] ratio of 2. Electron spin resonance spectral examination suggests a two-step electron transfer in the process of Nb 2O 5 → carbon cluster → Cr 2O 3 → Pt.
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