Thermodynamic and kinetic study of synthesised graphene oxide-CuO nanocomposites: a way forward to fuel additive and photocatalytic potentials

Sehar, S., Sher, F. ORCID: 0000-0003-2890-5912, Zhang, S., Khalid, U., Sulejmanović, J. and Lima, E.C., 2020. Thermodynamic and kinetic study of synthesised graphene oxide-CuO nanocomposites: a way forward to fuel additive and photocatalytic potentials. Journal of Molecular Liquids, 313: 113494. ISSN 0167-7322

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Abstract

Rectangular shaped GO-CuO nanocomposites have gained special attention because of spectacular applications in wastewater treatment. However, due to a lack of research, the fuel additive properties of GO-CuO are still unreported. A proper synthesis and characterisation methods are necessary to investigate the fuel additive properties of GO-CuO. The present research demonstrates the synthesis of graphene oxide (GO) sheets via modified Hummers' method. Further, GO-CuO nanohybrid was prepared by fast, cost-effective, and easy to handle solvothermal approach. The crystal data such as crystal structure, unit cell parameters, space groups, crystal system, and coordinates were explained via XRD analysis. Physical and combustion properties of fuel were analysed at different concentrations (0, 20, 40, 60, and 80 ppm) of diesel-GO-CuO blend for fuel quality parameters. The flash point and fire point of pure diesel oil were observed as 78 and 80 °C which were decreased to 50 and 58 °C, respectively, at 80 ppm concentration. With GO-CuO nanocomposites, the cloud point and pour point decrease until a temperature of −8 °C and − 19 °C, respectively, with a pronounced decrease in the viscosity up to 1.83 mm2/s. Further, the photocatalytic degradation of Methylene Red (MR) dye is studied with the effect of changing H2O2, photocatalyst, and dye concentrations with time. Remarkably, the reaction kinetics and MR degradation of about 94% with sixth-time recyclability were observed. The results of this study showed improved MR degradation when using GO-CuO with H2O2. GO-CuO applications can be utilised to remove other dyes in future and to improve fuel quality parameters.

Item Type: Journal article
Publication Title: Journal of Molecular Liquids
Creators: Sehar, S., Sher, F., Zhang, S., Khalid, U., Sulejmanović, J. and Lima, E.C.
Publisher: Elsevier BV
Date: 1 September 2020
Volume: 313
ISSN: 0167-7322
Identifiers:
NumberType
10.1016/j.molliq.2020.113494DOI
1568057Other
Divisions: Schools > School of Science and Technology
Record created by: Laura Ward
Date Added: 26 Jul 2022 13:59
Last Modified: 26 Jul 2022 13:59
URI: http://irep.ntu.ac.uk/id/eprint/46730

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