Supercritical alcohols as slovents and reducing agents for the synthesis of reduced graphene oxide
- Supercritical alcohols as slovents and reducing agents for the synthesis of reduced graphene oxide
- 서명도; 윤도연; 황교선; 강정원; 김재훈
- Reduced graphene oxide
- Issue Date
- VOL 64, 207-218
- We report on a facile, simple, and green graphene oxide (GO) reduction method based on a
supercritical alcohol approach. The influence over the chemical, thermal, morphological,
and textural properties of reduced graphene oxides (RGOs) of five different alcohols in their
supercritical conditions – methanol, ethanol, 1-propanol, 2-propanol, and 1-butanol – was
investigated in detail. Although the thermal stabilities and Fourier-transform infrared spectra
of RGOs produced using the different alcohols are very similar, a substantial difference
in the carbon-to-oxygen ratios measured by X-ray photoelectron spectroscopy and Brunauer–
Emmett–Teller surface areas are observed. The RGO produced using supercritical
ethanol exhibited a much higher carbon-to-oxygen ratio of 14.4 and a much larger surface
area of 203 ㎡/g compared with that produced using the other supercritical alcohols.
Raman spectra showed that the RGOs produced using supercritical ethanol and supercritical
2-propanol retained more of the graphitic structure. X-ray diffraction analysis revealed
that RGOs produced using supercritical 1-propanol and supercritical 1-butanol retained at
least two different interlayer spacings. The deoxygenation mechanism of GO in supercritical
ethanol is proposed based on gas and liquid product analysis.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.