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Investigation of size and morphology effects of MgO nanostructures on the properties of MgO/transformer oil-based nanofluids

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Abstract

MgO nanoparticles and nanoflakes were prepared using sol–gel and hydrothermal methods, and the effect of size and morphology of MgO nanostructures on the thermal conductivity and stability of the transformer oil-based nanofluid containing these nanostructures was investigated. The structural properties of the samples were examined using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The results showed that the nanostructure’s shape depends on the fabrication method, pH, temperature, and synthesis time. Also, the measurements showed that the thermal conductivity of nanofluids containing MgO nanoflakes with different wt% has higher values than that of nanofluids containing MgO nanoparticles. It was found that by increasing the concentration of nano additives up to 1 wt%, the thermal conductivity increased and then decreased for higher concentrations. The maximum increase of 11.3% was measured for nanofluid containing 1 wt% of nanoflakes. Likewise, the stability of nanoflake’s nanofluid was observed to be higher.

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Funding

The authors would like to acknowledge the Shahid Chamran University of Ahvaz for the financial support of this work.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran

    Mansoor Farbod, Narges Saki & Ameneh Ahangarpour

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  1. Mansoor Farbod
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  2. Narges Saki
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  3. Ameneh Ahangarpour
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Contributions

Author 1 planned the scheme, initiated the project, and suggested the experiments; Author 2 conducted the experiments and analyzed the empirical results; Author 3 was the advisor of project and held to analysis and/or interpretation of data. The manuscript was written through the contribution of all authors. All authors discussed the results and reviewed and approved the final version of the manuscript.

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Correspondence to Mansoor Farbod.

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Highlights

• Transformer oil-based nanofluid containing MgO NFs and NPs were prepared.

• Effect of size and morphology of NP and NFs on thermal conductivity was measured.

• Thermal conductivity of nanofluids containing MgO NFs was higher than NPs.

• The maximum increase of 11.3% was measured for nanofluid containing 1 wt% NFs.

• Nanofluids containing NFs were more stable and remained stable for several weeks.

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Farbod, M., Saki, N. & Ahangarpour, A. Investigation of size and morphology effects of MgO nanostructures on the properties of MgO/transformer oil-based nanofluids. Colloid Polym Sci 301, 1305–1311 (2023). https://doi.org/10.1007/s00396-023-05156-4

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  • DOI: https://doi.org/10.1007/s00396-023-05156-4

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