Mass spectrometry of graphene oxide thermal reduction in vacuum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00572928" target="_blank" >RIV/61389005:_____/23:00572928 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1080/10420150.2023.2186867" target="_blank" >https://doi.org/10.1080/10420150.2023.2186867</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10420150.2023.2186867" target="_blank" >10.1080/10420150.2023.2186867</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mass spectrometry of graphene oxide thermal reduction in vacuum

Popis výsledku v původním jazyce

Foils of graphene oxide (GO) prepared by micrometric graphene oxide platelets dispersed in water at low concentrations were physically investigated during their thermal reduction in a vacuum. The water, the carbon dioxide and the functional groups of oxygen, degassed during the thermal treatment, were monitored for the first time with a quadrupole mass spectrometer as a function of the foil temperature. Fourier transform infrared (FTIR) spectroscopy and energy dispersive X-rays (EDX) analyses were also presented to confirm the modality of reduction in vacuum. The thermal reduction process increases the C/O atomic ratio from the pristine value of about 2.0 to about 4.5 using a temperature of about 200 degrees C. The reduced graphene oxide (rGO), depleted of water and some functional oxygen groups, shows a more compact structure with an increment of the density from the pristine value of about 1.36 g/cm(3) to about 1.9 g/cm(3), which determines a decreasing of the distance between the graphene layers.

Název v anglickém jazyce

Mass spectrometry of graphene oxide thermal reduction in vacuum

Popis výsledku anglicky

Foils of graphene oxide (GO) prepared by micrometric graphene oxide platelets dispersed in water at low concentrations were physically investigated during their thermal reduction in a vacuum. The water, the carbon dioxide and the functional groups of oxygen, degassed during the thermal treatment, were monitored for the first time with a quadrupole mass spectrometer as a function of the foil temperature. Fourier transform infrared (FTIR) spectroscopy and energy dispersive X-rays (EDX) analyses were also presented to confirm the modality of reduction in vacuum. The thermal reduction process increases the C/O atomic ratio from the pristine value of about 2.0 to about 4.5 using a temperature of about 200 degrees C. The reduced graphene oxide (rGO), depleted of water and some functional oxygen groups, shows a more compact structure with an increment of the density from the pristine value of about 1.36 g/cm(3) to about 1.9 g/cm(3), which determines a decreasing of the distance between the graphene layers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Radiation Effects and Defects in Solids

ISSN

1042-0150

e-ISSN

1029-4953

Svazek periodika

178

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

28-39

Kód UT WoS článku

000983063100004

EID výsledku v databázi Scopus

2-s2.0-85159021625