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Experimental Investigation of Green Nanofluids: Assessment of Wettability, Viscosity and Thermal Conductivity

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dc.contributor.authorNobrega, Glauco
dc.contributor.authorCardoso, Beatriz D.
dc.contributor.authorBarbosa, Filipe
dc.contributor.authorPinho, Diana
dc.contributor.authorAbreu, Cristiano
dc.contributor.authorSouza, Reinaldo Rodrigues de
dc.contributor.authorMoita, Ana S.
dc.contributor.authorRibeiro, J.E.
dc.contributor.authorLima, Rui A.
dc.date.accessioned2025-02-12T16:51:30Z
dc.date.available2025-02-12T16:51:30Z
dc.date.issued2024
dc.description.abstractMetallic nanoparticles are a type of nanomaterial synthesized from metallic precursors. Due to their unique physiochemical, electrical, and optical properties, metallic nanoparticles are widely studied and applied in various areas such as medicine, electronics, and heat transfer systems. However, conventional synthesis methods to produce metallic nanoparticles face challenges such as instability and environmental concerns, prompting the exploration of greener synthesis methods. Green synthesis uses natural resources like plants and algae as reducing agents, offering a more environmentally friendly approach for the synthesis of metallic nanoparticles. These green-synthesized metallic nanoparticles can enhance heat transfer by becoming part of nanofluids (NFs), which are colloidal mixtures of NPs in a fluid base. NFs, employed for heat transfer. As a result, it is essential to characterize the NFs regarding wettability, viscosity, and thermal conductivity. The results of the spectrophotometer confirmed the green synthesis of NPs, and it was observed that the increase in NP concentration impacted the contact angle, improving the ability to wet. The thermal conductivity is also modified, with an improvement of 11.3% compared to distilled water, without a significant increase in fluid viscosity.pt_PT
dc.description.sponsorshipThis work was supported by the projects, 2022.02085.PTDC (https://doi.org/10.54499/2022.02085.PTDC) and 2022.06207.PTDC (https://doi.org/10.54499/2022.06207.PTDC), through national funds (OE), within the scope of the Scientific Research and Technological Development Projects (IC&DT) program in all scientific domains (PTDC), through the FCT, I.P. The authors also acknowledge the partial financial support within the R&D Units Project Scope UIDB/04436/2020, UIDP/04436/2020, UIDB/04077/2020, UIDP/04077/2020, UIDB/00532/2020, UIDB/00690/2020 and LA/P/0045/2020 (ALiCE). Diana Pinho thanks to FCT for the individual funding 2021.00027.CEECIND/CP1664/CT0007, (https://doi.org/10.54499/2021.00027.CEECIND/CP1664/CT0 007). The authors are also grateful for FCT funding through Project PTDC/EMETED/ 7801/2020 and UIPD/50009/2020- FCT and UIDB/50009 – FCT. A.S. Moita and Reinaldo Souza also acknowledge FCT for partially financing their contracts through CEECINST/00043/2021/CP2797/CT0005, doi: 10.54499/CEECINST/00043/2021/CP2797/CT0005 and 2022.03151.PTD (https://doi.org/10.54499/2022.03151.PTDC) and LA/P/0083/2020 IN +-IST-ID. The authors are grateful to Professor Margarida Gonçalves and Professor Andrea Zille for providing materials and equipment, as well as for their technical support. Nobrega was supported by the doctoral PRT/BD/153088/2021, financed by the Portuguese Foundation for Science and Technology (FCT), and with funds from MCTES/República Portuguesa, under MIT Portugal Program. and for financial support through national funds FCT/MCTES (PIDDAC) to CIMO (UIDB/00690/2020 and UIDP/00690/2020) and SusTEC (LA/P/0007/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNobrega, Glauco; Cardoso, Beatriz; Barbosa, Filipe; Pinho, Diana; Abreu, Cristiano; Souza, Reinaldo; Moita, Ana; Ribeiro, João; Lima, Rui A. (2024). Experimental Investigation of Green Nanofluids: Assessment of Wettability, Viscosity and Thermal Conductivity. In ASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer (MNHMT 2024). American Society of Mechanical Engineers, p. 1-5. ISBN 978-0-7918-8815-5.pt_PT
dc.identifier.doi10.1115/MNHMT2024-132927pt_PT
dc.identifier.isbn978-0-7918-8815-5
dc.identifier.urihttp://hdl.handle.net/10198/31179
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Society of Mechanical Engineerspt_PT
dc.relationPortable Microfluidic system for fast molecular diagnostics of Stroke
dc.relationFluidicOnChip: An advanced microfluidic organ-on-a-chip system to monitor and predict therapeutic effects of nanoparticles
dc.relationMicroelectromechanical Systems Research Unit
dc.relationMicroelectromechanical Systems Research Unit
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationTransport Phenomena Research Center
dc.relationMountain Research Center - UIDB/00690/2020
dc.relationALICE - Associate Laboratory in Chemical Engineering
dc.relationNEXTGENmOCp: Next generation of a microfluidic Organ-on-a-Chip platform (mOCp) to assess and diagnosis therapeutic effects of innovative nanomedicines
dc.relationInterfacial COOLing Strategies for high POwer dissipation conversion Technologies
dc.relationLaboratory of Robotics and Engineering Systems
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dc.relationContract of A.M.
dc.relationAn innovative and sustainable polydimethylsiloxane (PDMS) cooling system to enhance the heat transfer efficiency and lifetime of photovoltaic panels
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dc.relationSeaweed nanofluids for cooling photovoltaic solar panels used in space missions (PRT/BD/153088/2021)
dc.relationMountain Research Center - UIDP/00690/2020
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectGreen synthesispt_PT
dc.subjectMetallic nanoparticlespt_PT
dc.subjectNanofluidspt_PT
dc.subjectHeat transferpt_PT
dc.titleExperimental Investigation of Green Nanofluids: Assessment of Wettability, Viscosity and Thermal Conductivitypt_PT
dc.typeconference paper
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oaire.citation.titleASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer (MNHMT 2024)pt_PT
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