Modification of Graphene Oxide/V2O5 center dot nH(2)O Nanocomposite Films via Direct Laser Irradiation

摘要

Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V2O5 center dot nH(2)O) nanoribbons wrapped with graphene oxide (GO) flakes was performed via 405 nm direct laser irradiation. The combination of X-ray diffraction, X-ray photoelectron spectroscopy, Raman scattering, transmission electron microscopy, and scanning electron microscopy allowed comprehensive characterization of physical and chemical changes of GO/V2O5 center dot nH(2)O nanocomposite films upon photothermal modification. The modified nanocomposite films exhibited porous surface morphology (17.27 m(2) g(-1)) consisting of randomly distributed pillarlike protrusions. The photothermal modification process of GO/V(2)O5 center dot nH(2)O enhanced the electrical conductivity of nanocomposite from 1.6 to 6.8 S/m. It was also determined that the direct laser irradiation of GO/ V2O5 center dot nH(2)O resulted in considerable decrease of C-O bounds as well as O-H functional groups with an increase of the laser power density.