Mesoporous-assembled V₂O₅ nanosheet synthesized via a surfactant-modified sol–gel technique and its photocatalytic H₂ production activity under visible light irradiation
2011
Puangpetch, Tarawipa | Chavadej, Sumaeth | Sreethawong, Thammanoon
A modified sol–gel technique with the aid of a structure-directing surfactant was employed to synthesize highly crystalline mesoporous-assembled V₂O₅ nanosheet under mild conditions. The synthesized V₂O₅ nanosheet was systematically characterized by TG-DTA, XRD, N₂ adsorption–desorption, high resolution TEM, and UV–visible spectroscopy analyses. The characterization results revealed that the synthesized V₂O₅ nanosheet exhibited not only high crystallinity but also narrow pore size distribution in the mesoporous range. The photocatalytic H₂ production activity of the synthesized mesoporous-assembled V₂O₅ nanosheet from both self photoexcitation and dye photosensitization systems under visible light irradiation was also found to be higher than that of a commercially available V₂O₅ powder.
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