Critical temperatures in the synthesis of graphene-like materials by thermal exfoliation–reduction of graphite oxide

By C. Botas, P. Álvarez, C. Blanco, R. Santamaría, M. Granda, M. Gutiérrez, F. Rodríguez-Reinoso, R. Menéndez. 2013

274 citations recorded by the source corpus.

Abstract We prepared a series of graphene-like materials by thermal exfoliation/reduction of a graphite oxide (GO) at temperatures between 127 °C and 2400 °C. The extent of the exfoliation and reduction of the GO at different temperatures, as well as the impact on the resultant graphene-like materials (TRGs), were studied through their chemical/structural characterization. The main oxygen loss was observed at 127 °C during the blasting of the GO, which produced its exfoliation into monolayer functionalized TRG with hydroxyl groups and minor amounts of epoxy and carboxyl groups. Above 600 °C, the reduction continued smoothly, with oxygen and hydrogen loss and the conversion of hybridised carbon atoms from sp3 into sp2. 1000 °C appears to be a critical temperature for the efficiency of the reduction process, as the resulting TRG contained

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/ba609b6cd313e498424ffe0f988f48a88c10f813

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In Biomedical Engineering

1. R. Verdejo
2. M. López-Manchado
3. C. Botas
4. P. Álvarez
5. R. Menéndez
6. Laura J Romasanta

In Materials Chemistry

1. M. López-Manchado
2. R. Verdejo
3. C. Botas
4. P. Álvarez
5. M. Granda
6. R. Santamaría
7. R. Menéndez
8. C. Blanco

Citations in the corpus

• Graphene materials with different structures prepared from the same graphite by the Hummers and Brodie methods (2013, methodology): “TPD experiments were performed in both GOs (see S.I.).”