Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A simple and efficient method to prepare exfoliated and reduced graphene nanosheets by vacuum oven
AU - Alzahrany, A.
AU - Rehman, I.U.
PY - 2021/7/28
Y1 - 2021/7/28
N2 - We report fabrication of reduced graphene oxides (RGO) papers using thermal reduction by vacuum-assisted for thermal exfoliation and in situ reduction of graphene oxide (GO) at temperatures as low as 180 °C. The conjugated sp2-carbon structure of GO was restored throughout the reduction process, and the thermal stability of the RGO papers was substantially better than that of the GO paper, according to Raman analysis and thermogravimetry analysis (TGA). The RGO paper that was reduced for 24 h exhibited the highest electrical conductivity of (29.3 ± 0.4) × 103 S m−1 at 180 °C. As the reduction degree of the RGO paper deepens, the thickness of the sample gradually decreases, indicating that the conduction type of RGO paper can be controlled by regulating the reduction degree. Thus, we demonstrate a simplified fabrication way for flexible conducting RGO paper of significant application potential as electrodes in a variety of devices.
AB - We report fabrication of reduced graphene oxides (RGO) papers using thermal reduction by vacuum-assisted for thermal exfoliation and in situ reduction of graphene oxide (GO) at temperatures as low as 180 °C. The conjugated sp2-carbon structure of GO was restored throughout the reduction process, and the thermal stability of the RGO papers was substantially better than that of the GO paper, according to Raman analysis and thermogravimetry analysis (TGA). The RGO paper that was reduced for 24 h exhibited the highest electrical conductivity of (29.3 ± 0.4) × 103 S m−1 at 180 °C. As the reduction degree of the RGO paper deepens, the thickness of the sample gradually decreases, indicating that the conduction type of RGO paper can be controlled by regulating the reduction degree. Thus, we demonstrate a simplified fabrication way for flexible conducting RGO paper of significant application potential as electrodes in a variety of devices.
KW - Graphene oxide (GO)
KW - Oxygen-containing functional groups (OCFGs)
KW - Vacuum reduced graphene oxide (RGO)
KW - Graphene
KW - Thermodynamic stability
KW - Thermogravimetric analysis
KW - Carbon structures
KW - Electrical conductivity
KW - Graphene nanosheets
KW - Reduced graphene oxides (RGO)
KW - Reduction degree
KW - Reduction process
KW - Thermal reduction
KW - Thermogravimetry analysis
KW - Paper
U2 - 10.1557/s43578-021-00294-3
DO - 10.1557/s43578-021-00294-3
M3 - Journal article
VL - 36
SP - 3031
EP - 3040
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 14
ER -