2007 Volume 80 Issue 11 Pages 443-449
W6O19-epoxy resin complexes with different W : C molar ratios, I, II and III, were prepared by the reaction of tetrabutylammonium hexatungstate, dyglycidyl ether of bisphenol A and phthalic anhydride. The microwave treatment of complexes I, II and III gave nano-sized WO3, WO2, W2C, WC and/or W / carbon composite materials Ic-IIIc. The heating of Ic-IIIc under an oxygen atmosphere gave nano-sized WO3 / carbon composite materials Ic-O-IIIc-O. The ESR spectral examinations suggest the possibility of an electron transfer from WO3 particles to carbon. Visible light-responsive oxidation-reduction functions of the oxidized composite materials were examined.
