Issue 85, 2015

Facile thermal annealing of graphite oxide in air for graphene with a higher C/O ratio

Abstract

Rapid thermal exfoliation/reduction of graphite oxide is a fast and easy method among the oxidation–reduction approaches for graphene synthesis. In this research, we firstly demonstrated that graphene can be obtained with a surface area of 550 to 700 m2 g−1 and a yield of approximately 50% through one-step rapid thermal treatment in air from 450 to 550 °C, without vacuum or protective gas through a self-protection process. Then, we further demonstrated the effective two-step thermal annealing to significantly improve the C/O ratio from ca. 7.3 to 25.9 in air at the relatively low temperature of 600 °C. The smart self-protecting and enhanced-oxygen-removal mechanisms were discussed.

Graphical abstract: Facile thermal annealing of graphite oxide in air for graphene with a higher C/O ratio

Supplementary files

Article information

Article type
Paper
Submitted
19 maí 2015
Accepted
31 júl. 2015
First published
31 júl. 2015

RSC Adv., 2015,5, 69854-69860

Author version available

Facile thermal annealing of graphite oxide in air for graphene with a higher C/O ratio

S. Tian, J. Sun, S. Yang, P. He, S. Ding, G. Ding and X. Xie, RSC Adv., 2015, 5, 69854 DOI: 10.1039/C5RA09388K

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