Mesoporous-assembled V2O5 nanosheet synthesized via a surfactant-modified sol–gel technique and its photocatalytic H2 production activity under visible light irradiation
✍ Scribed by Tarawipa Puangpetch; Sumaeth Chavadej; Thammanoon Sreethawong
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 751 KB
- Volume
- 208
- Category
- Article
- ISSN
- 0032-5910
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✦ Synopsis
A modified sol-gel technique with the aid of a structure-directing surfactant was employed to synthesize highly crystalline mesoporous-assembled V 2 O 5 nanosheet under mild conditions. The synthesized V 2 O 5 nanosheet was systematically characterized by TG-DTA, XRD, N 2 adsorption-desorption, high resolution TEM, and UV-visible spectroscopy analyses. The characterization results revealed that the synthesized V 2 O 5 nanosheet exhibited not only high crystallinity but also narrow pore size distribution in the mesoporous range. The photocatalytic H 2 production activity of the synthesized mesoporous-assembled V 2 O 5 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 V 2 O 5 powder.