Actually I am working on Graphene oxide base metal oxides nanocomposites. When I annealed the sample under 450°C for 1 h in muffle furnace in air. The sample had changed its colour and the GO was oxidized. Please suggest me the suitable temperature and time for annealing the GO based materials. Which gas is suitable under which the annealing process should be carried?
Alvena Shahid
Ajaz Ul Haq Lower temperatures are ideal for partial GO reduction, while higher temperatures lead to complete reduction. Annealing between 150-200°C for partial reduction and 450°C for complete reduction is recommended. Consider annealing GO-based nanocomposites under vacuum or in an inert atmosphere, such as nitrogen, to avoid oxidation.
- Qu, H. J., Huang, L. J., Han, Z. Y., Wang, Y. X., Zhang, Z. J., Wang, Y., ... & Tang, J. G. (2021). A review of graphene-oxide/metal–organic framework composites materials: characteristics, preparation and applications. Journal of Porous Materials, 28, 1837-1865.
- Sengupta, I., Kumar, S. S. S., Pal, S. K., & Chakraborty, S. (2020). Characterization of structural transformation of graphene oxide to reduced graphene oxide during thermal annealing. Journal of Materials Research, 35(9), 1197-1204.
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