Tailoring the oxygen content of graphene oxide by IR laser irradiation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00492091" target="_blank" >RIV/61389005:_____/18:00492091 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00339-018-1956-z" target="_blank" >http://dx.doi.org/10.1007/s00339-018-1956-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00339-018-1956-z" target="_blank" >10.1007/s00339-018-1956-z</a>

Result language

angličtina

Original language name

Tailoring the oxygen content of graphene oxide by IR laser irradiation

Original language description

Graphene oxide (GO) foils, synthesized with the Hummers' method, were IR laser treated in air and under vacuum at some laser fluences (300 and 600 mJ/cm(2) in air and 200 mJ/cm(2) under vacuum). Depending on the laser fluence and the used environment, it was possible to control the oxidation or reduction degree of GO foils. The evolution of the structural and compositional characteristics of the as-prepared GO films was examined through different physical characterization techniques. In particular, scanning electron microscopy (SEM), surface profilometry, energy-dispersive X-ray spectroscopy (EDX), Rutherford backscattering spectrometry (RBS) and X-ray photoelectron spectroscopy (XPS) were used. A preliminary Raman analysis was also carried out on some GO foils. The results suggest the gradual restoration of sp (2) clusters within the sp (3) matrix under vacuum or in air at high laser fluences. In these conditions, the partial reestablishment of planarity and an increase in the D/G intensity ratio are also observed. In air, at low laser fluences, the IR laser irradiation causes GO films oxidation, increase in roughness and greater exfoliation availability. The useful deduced information about morphology and composition make the IR laser treatment a simple method for controlling the physical properties of GO film by tailoring the oxygen functional groups, and consequently, for the production of tailor-made highly conductive and defect-free graphene-like materials or GO composites with metals and organic molecules or GO doped with heteroatoms.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Physics A - Materials Science & Processing

ISSN

0947-8396

e-ISSN

—

Volume of the periodical

124

Issue of the periodical within the volume

8

Country of publishing house

DE - GERMANY

Number of pages

12

Pages from-to

—

UT code for WoS article

000439391800002

EID of the result in the Scopus database

2-s2.0-85050303752