期刊
NANOMATERIALS
卷 7, 期 12, 页码 -出版社
MDPI AG
DOI: 10.3390/nano7120447
关键词
few-layer graphene oxide; reduced graphene oxide; supercritical water; glycerol gasification; hydrogen production
类别
资金
- FEDER
- Spanish Economy and Competitiveness Ministry (MINECO) [ENE2011-28318-C03-01, ENE2014-52189-C02-01-R]
- MINECO [RYC-2013-12494]
A sustainable and effective method for de-oxygenation of few-layer graphene oxide (FLGO) by glycerol gasification in supercritical water (SCW) is described. In this manner, reduction of FLGO and valorization of glycerol, in turn catalyzed by FLGO, are achieved simultaneously. The addition of glycerol enhanced FLGO oxygen removal by up to 59% due to the in situ hydrogen generation as compared to the use of SCW only. Physicochemical characterization of the reduced FLGO (rFLGO) showed a high restoration of the sp(2)-conjugated carbon network. FLGO sheets with a starting C/O ratio of 2.5 are reduced by SCW gasification of glycerol to rFLGO with a C/O ratio of 28.2, above those reported for hydrazine-based methods. Additionally, simultaneous glycerol gasification resulted in the concurrent production of H-2, CO, CH4 and valuable hydrocarbons such as alkylated and non-alkylated long chain hydrocarbon (C12-C31), polycyclic aromatic hydrocarbons (PAH), and phthalate, phenol, cresol and furan based compounds.
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