Startseite Eco-conscious nanofluids: exploring heat transfer performance with graphitic carbon nitride nanoparticles
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Eco-conscious nanofluids: exploring heat transfer performance with graphitic carbon nitride nanoparticles

  • Vijayakumar Gokul , Mohanachandran Nair Sindhu Swapna und Sankaranarayana Iyer Sankararaman ORCID logo EMAIL logo
Veröffentlicht/Copyright: 18. Oktober 2023

Abstract

The work explores the heat transfer capabilities of semiconducting graphitic carbon nitride (g-C3N4) nanofluids. Also, it presents a sustainable and eco-friendly method for synthesizing g-C3N4 nanoparticles using commercially available rice flour as a natural carbon precursor through hydrothermal treatment. The synthesized sample subjected to various characterizations, including analysis of their structure, morphology, thermal properties, and optical properties. The optical bandgap (2.66 eV) is deduced through Tauc plot analysis and reveals the semiconducting nature of the sample. The formation of g-C3N4 is confirmed by various spectroscopic techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and Raman spectroscopy. Thermogravimetric analysis (TGA) demonstrates the nanoparticles’ excellent thermal stability up to 550 °C, indicating potential applications in heat transfer fluids. The investigation of concentration-dependent thermal diffusivity variation using the sensitive mode mismatched dual beam thermal lens technique highlights the potential of g-C3N4 semiconductor nanofluid as an organic and metal-free additive in industry-demanding coolant applications.


Corresponding author: Sankaranarayana Iyer Sankararaman, Department of Optoelectronics, University of Kerala, Trivandrum 695581, India, E-mail:

Acknowledgments

Acknowledging Central Laboratory for Instrumentation and Facilitation (CLIF), University of Kerala, Trivandrum, 695581, India, for providing an instrumentation facility.

  1. Research ethics: Not applicable.

  2. Author contributions: Methodology, V. G.; Software, V. G.; Validation, M. N. S. S. and S. I. S.; Formal analysis, V. G., M. N. S. S. and S. I. S.; Writing-original draft, V. G.; Writing-review and editing, M. N. S. S., and S. I. S.; Supervision- S. I. S. All authors have read and agreed to the published version of the manuscript.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: None declared.

  5. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2023-07-18
Accepted: 2023-09-22
Published Online: 2023-10-18
Published in Print: 2023-12-27

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