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Modification of Graphene Oxide/V2O5·nH2O Nanocomposite Films via Direct Laser Irradiation.

ABSTRACT: Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V2O5·nH2O) 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·nH2O nanocomposite films upon photothermal modification. The modified nanocomposite films exhibited porous surface morphology (17.27 m2 g-1) consisting of randomly distributed pillarlike protrusions. The photothermal modification process of GO/V2O5·nH2O 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·nH2O resulted in considerable decrease of C-O bounds as well as O-H functional groups with an increase of the laser power density.

SUBMITTER: Lazauskas A 

PROVIDER: S-EPMC7467550 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Modification of Graphene Oxide/V<sub>2</sub>O<sub>5</sub>·<i>n</i>H<sub>2</sub>O Nanocomposite Films via Direct Laser Irradiation.

Lazauskas Algirdas A   Marcinauskas Liutauras L   Andrulevicius Mindaugas M  

ACS applied materials & interfaces 20200413 16

Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>·<i>n</i>H<sub>2</sub>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<sub>2</su  ...[more]

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