Modification of Graphene Oxide/V(2)O(5)·nH(2)O Nanocomposite Films via Direct Laser Irradiation

[Image: see text] Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V(2)O(5)·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/V(2)O(5)·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)O(5)·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/V(2)O(5)·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.