Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/37695 |
Resumo: | In the present study, ternary rGO-Fe3O4-TiO2 nanocomposites was produced using a straightforward sol-gel technique. The nanofluids are synthesized using rGO-Fe3O4-TiO2 hybrid nanoparticles suspended in ethylene glycol (EG). Ternary rGO-Fe3O4-TiO2 nanocomposite (0.01–0.25 mass. %) were dispersed in EG acquiring stable nanofluids. The ternary rGO-Fe3O4-TiO2 nanocomposite present in the colloidal phase has been categorized by FTIR, SEM, EDX, XRD, and Zeta potential. At varying temperatures between 25 and 60 °C, the thermal conductivity was explored. Experimental results show that the stability of all the studied rGO-Fe3O4-TiO2 /EG nanofluid samples was above 52.04 mV. Enhancement in thermal conductivity for rGO-Fe3O4-TiO2/EG nanofluids significantly increases with mass concentration and temperature, with an enhancement of 13.3% at 60 °C for 0.25 wt%. The best R2 coefficient of determination estimated at 25 °C, 30 °C, 40 °C, 50 °C, and 60 °C was 95.6%, 98.2%, 95.4%, 97.6%, and 99.0%. Therefore, the investigated ternary hybrid nanofluid can be utilized for both heating and cooling applications with long term stability. |
id |
RCAP_7d82f28aeb57dccb2c2a48a9a617b406 |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/37695 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental studyHybrid nanofluidThermal conductivityStabilityReduced graphene oxideZeta potentialIn the present study, ternary rGO-Fe3O4-TiO2 nanocomposites was produced using a straightforward sol-gel technique. The nanofluids are synthesized using rGO-Fe3O4-TiO2 hybrid nanoparticles suspended in ethylene glycol (EG). Ternary rGO-Fe3O4-TiO2 nanocomposite (0.01–0.25 mass. %) were dispersed in EG acquiring stable nanofluids. The ternary rGO-Fe3O4-TiO2 nanocomposite present in the colloidal phase has been categorized by FTIR, SEM, EDX, XRD, and Zeta potential. At varying temperatures between 25 and 60 °C, the thermal conductivity was explored. Experimental results show that the stability of all the studied rGO-Fe3O4-TiO2 /EG nanofluid samples was above 52.04 mV. Enhancement in thermal conductivity for rGO-Fe3O4-TiO2/EG nanofluids significantly increases with mass concentration and temperature, with an enhancement of 13.3% at 60 °C for 0.25 wt%. The best R2 coefficient of determination estimated at 25 °C, 30 °C, 40 °C, 50 °C, and 60 °C was 95.6%, 98.2%, 95.4%, 97.6%, and 99.0%. Therefore, the investigated ternary hybrid nanofluid can be utilized for both heating and cooling applications with long term stability.Elsevier2023-05-11T15:13:45Z2020-07-15T00:00:00Z2020-07-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37695eng0032-591010.1016/j.powtec.2020.06.012Cakmak, Nese KeklikciogluSaid, ZafarSundar, L. SyamAli, Ziad M.Tiwari, Arun Kumarinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:13:38Zoai:ria.ua.pt:10773/37695Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:08:17.991586Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
title |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
spellingShingle |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study Cakmak, Nese Keklikcioglu Hybrid nanofluid Thermal conductivity Stability Reduced graphene oxide Zeta potential |
title_short |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
title_full |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
title_fullStr |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
title_full_unstemmed |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
title_sort |
Preparation, characterization, stability, and thermal conductivity of rGO-Fe3O4-TiO2 hybrid nanofluid: an experimental study |
author |
Cakmak, Nese Keklikcioglu |
author_facet |
Cakmak, Nese Keklikcioglu Said, Zafar Sundar, L. Syam Ali, Ziad M. Tiwari, Arun Kumar |
author_role |
author |
author2 |
Said, Zafar Sundar, L. Syam Ali, Ziad M. Tiwari, Arun Kumar |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cakmak, Nese Keklikcioglu Said, Zafar Sundar, L. Syam Ali, Ziad M. Tiwari, Arun Kumar |
dc.subject.por.fl_str_mv |
Hybrid nanofluid Thermal conductivity Stability Reduced graphene oxide Zeta potential |
topic |
Hybrid nanofluid Thermal conductivity Stability Reduced graphene oxide Zeta potential |
description |
In the present study, ternary rGO-Fe3O4-TiO2 nanocomposites was produced using a straightforward sol-gel technique. The nanofluids are synthesized using rGO-Fe3O4-TiO2 hybrid nanoparticles suspended in ethylene glycol (EG). Ternary rGO-Fe3O4-TiO2 nanocomposite (0.01–0.25 mass. %) were dispersed in EG acquiring stable nanofluids. The ternary rGO-Fe3O4-TiO2 nanocomposite present in the colloidal phase has been categorized by FTIR, SEM, EDX, XRD, and Zeta potential. At varying temperatures between 25 and 60 °C, the thermal conductivity was explored. Experimental results show that the stability of all the studied rGO-Fe3O4-TiO2 /EG nanofluid samples was above 52.04 mV. Enhancement in thermal conductivity for rGO-Fe3O4-TiO2/EG nanofluids significantly increases with mass concentration and temperature, with an enhancement of 13.3% at 60 °C for 0.25 wt%. The best R2 coefficient of determination estimated at 25 °C, 30 °C, 40 °C, 50 °C, and 60 °C was 95.6%, 98.2%, 95.4%, 97.6%, and 99.0%. Therefore, the investigated ternary hybrid nanofluid can be utilized for both heating and cooling applications with long term stability. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-07-15T00:00:00Z 2020-07-15 2023-05-11T15:13:45Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/37695 |
url |
http://hdl.handle.net/10773/37695 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0032-5910 10.1016/j.powtec.2020.06.012 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137735886241792 |