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Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage

Solar-thermal technology based on phase change materials (PCMs) has received a lot of attention as a cost-effective and practical way to overcome solar energy intermittency. However, weak photothermal conversion ability and complex preparation processes have hindered the practical application of PCM...

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Main Authors: Akhiani, Amir Reza, Metselaar, Hendrik Simon Cornelis, Ang, Bee Chin, Mehrali, Mehdi, Mehrali, Mohammad
Format: Article
Published: Elsevier Sci Ltd 2022
Subjects:
QC Physics
QD Chemistry
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/41197/
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spelling my.um.eprints.411972023-09-13T04:21:32Z http://eprints.um.edu.my/41197/ Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage Akhiani, Amir Reza Metselaar, Hendrik Simon Cornelis Ang, Bee Chin Mehrali, Mehdi Mehrali, Mohammad QC Physics QD Chemistry TJ Mechanical engineering and machinery Solar-thermal technology based on phase change materials (PCMs) has received a lot of attention as a cost-effective and practical way to overcome solar energy intermittency. However, weak photothermal conversion ability and complex preparation processes have hindered the practical application of PCMs. In this work, a new approach for facile, uniform, and firm assembly of graphene nanoplatelet (GNP) through the reaction of graphene oxide (GO) with the silanized melamine foam (MF) is introduced. Here, the deposited amino siloxane layer not only promotes the adhesion and integrity of embedded GNP/GO nanosheets but also facilitates the synthetic route compared to the previous studies. Following the reduction of GO with oleylamine (OA), the hybrid GNP/rGO foams with an integrated network were obtained. The composite PCMs were prepared through the incorporation of paraffin wax (PW) into the hybrid structure. The high hydrophobicity and porosity of the GNP/rGO foams resulted in a high loading of paraffin wax (nearly 97 wt%) and thus large transition enthalpy of 182 J g-1. The GNP/rGO framework provided excellent solar-thermal storage efficiency of up to 92.2%. The PCM composite containing the highest content of GNP (6 wt%) revealed an enhanced thermal conductivity by 87% compared to the unmodified MF/PW composite.(c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Elsevier Sci Ltd 2022-08 Article PeerReviewed Akhiani, Amir Reza and Metselaar, Hendrik Simon Cornelis and Ang, Bee Chin and Mehrali, Mehdi and Mehrali, Mohammad (2022) Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage. Materials Today Energy, 28. ISSN 2468-6069, DOI https://doi.org/10.1016/j.mtener.2022.101077 <https://doi.org/10.1016/j.mtener.2022.101077>. 10.1016/j.mtener.2022.101077
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
QD Chemistry
TJ Mechanical engineering and machinery
spellingShingle QC Physics
QD Chemistry
TJ Mechanical engineering and machinery
Akhiani, Amir Reza
Metselaar, Hendrik Simon Cornelis
Ang, Bee Chin
Mehrali, Mehdi
Mehrali, Mohammad
Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
description Solar-thermal technology based on phase change materials (PCMs) has received a lot of attention as a cost-effective and practical way to overcome solar energy intermittency. However, weak photothermal conversion ability and complex preparation processes have hindered the practical application of PCMs. In this work, a new approach for facile, uniform, and firm assembly of graphene nanoplatelet (GNP) through the reaction of graphene oxide (GO) with the silanized melamine foam (MF) is introduced. Here, the deposited amino siloxane layer not only promotes the adhesion and integrity of embedded GNP/GO nanosheets but also facilitates the synthetic route compared to the previous studies. Following the reduction of GO with oleylamine (OA), the hybrid GNP/rGO foams with an integrated network were obtained. The composite PCMs were prepared through the incorporation of paraffin wax (PW) into the hybrid structure. The high hydrophobicity and porosity of the GNP/rGO foams resulted in a high loading of paraffin wax (nearly 97 wt%) and thus large transition enthalpy of 182 J g-1. The GNP/rGO framework provided excellent solar-thermal storage efficiency of up to 92.2%. The PCM composite containing the highest content of GNP (6 wt%) revealed an enhanced thermal conductivity by 87% compared to the unmodified MF/PW composite.(c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
format Article
author Akhiani, Amir Reza
Metselaar, Hendrik Simon Cornelis
Ang, Bee Chin
Mehrali, Mehdi
Mehrali, Mohammad
author_facet Akhiani, Amir Reza
Metselaar, Hendrik Simon Cornelis
Ang, Bee Chin
Mehrali, Mehdi
Mehrali, Mohammad
author_sort Akhiani, Amir Reza
title Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
title_short Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
title_full Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
title_fullStr Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
title_full_unstemmed Highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
title_sort highly hydrophobic silanized melamine foam for facile and uniform assembly of graphene nanoplatelet towards efficient light-to-thermal energy storage
publisher Elsevier Sci Ltd
publishDate 2022
url http://eprints.um.edu.my/41197/
_version_ 1778161639990755328
score 13.211869

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