Tailoring the performance of graphene aerogels for oil/organic solvent separation by 1-step solvothermal approach

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Abstract

Ultra-light eco-friendly graphene oxide (GO)-based aerogels are reported by simple one-step solvothermal self-assembly. The effect of varying parameters such as C/O ratio of GO; reducing agent amount; temperature; and duration on the properties of the aerogels was studied. The structural and vibrational features and hydrophobic surface properties of the obtained aerogels were obtained by XRD; FTIR; XPS; Raman; SEM; and contact angle measurements. The effect of synthesis conditions on the engine oil and organic solvent absorption properties was assessed. The results indicated that the lower the C/O ratio of GO, the better the absorption properties, with the best performance for oil uptake reaching 86 g g−1 . The obtained results indicate the approach based on ice-templating and the tailoring of oxygen content in GO make the resulting aerogels potential candidates for use in oil spill and organic solvent treatments.

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Pruna, A., Cárcel, A. C., Barjola, A., Benedito, A., & Giménez, E. (2019). Tailoring the performance of graphene aerogels for oil/organic solvent separation by 1-step solvothermal approach. Nanomaterials, 9(8). https://doi.org/10.3390/nano9081077

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