TiO2-V2O5 nanocomposites as alternative energy storage substances for photocatalysts

J Nanosci Nanotechnol. 2012 Jan;12(1):828-33. doi: 10.1166/jnn.2012.5381.

Abstract

TiO2-V2O5 was prepared and evaluated as an energy storage material for photocatalysts with high capacity and initial charging rate. The compound was successfully obtained by sol-gel technique and effects of compound composition and calcination temperature on the energy storage ability were investigated. The synthesized compounds were characterized by means of X-ray powder diffraction (XRD), scanning electron microscopy equipped with energy-dispersive X-ray analysis (SEM-EDX) and transmission electron microscopy (TEM). The results reveals that the compound of Ti:V molar ratio equal to 1:0.11 calcined at 550 degrees C exhibited superior energy storage ability than parent substances and 1.7-times higher capacity and 2.3-times higher initial charging rate compared to WO3, indicating that the compound is a remarkable alternative to conventional energy storage substances.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Energy Transfer
  • Materials Testing
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Photochemistry / methods*
  • Titanium / chemistry*
  • Vanadium Compounds / chemistry*

Substances

  • Vanadium Compounds
  • titanium dioxide
  • vanadium pentoxide
  • Titanium