Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method

Chemical stability; Encapsulation; Heat storage; Nanocapsules; Sol-gel process; Sol-gels; Stearic acid; Thermal conductivity; Titanium; Titanium dioxide; Chemical interactions; Controlled synthesis; Encapsulation efficiency; Nano-encapsulation; Phase change property; Stability and reliabilities; The...

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Main Authors: Tahan Latibari S., Mehrali M., Afifi A.B.M., Mahlia T.M.I., Akhiani A.R., Metselaar H.S.C.
Other Authors: 55872422100
Format: Article
Published: Elsevier Ltd 2023
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spelling my.uniten.dspace-223312023-05-29T14:00:16Z Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method Tahan Latibari S. Mehrali M. Mehrali M. Afifi A.B.M. Mahlia T.M.I. Akhiani A.R. Metselaar H.S.C. 55872422100 55639087200 57190658824 56608828400 56997615100 55865059900 57218580099 Chemical stability; Encapsulation; Heat storage; Nanocapsules; Sol-gel process; Sol-gels; Stearic acid; Thermal conductivity; Titanium; Titanium dioxide; Chemical interactions; Controlled synthesis; Encapsulation efficiency; Nano-encapsulation; Phase change property; Stability and reliabilities; Thermal Performance; Titanium tetraisopropoxide; Phase change materials; encapsulation; experimental study; fatty acid; gel; oxide; performance assessment; pH; stabilization; temperature effect; thermal conductivity; weight In order to improve the thermal properties of PCMs (phase change materials), in this study, a new series of NEPCMs (nanoencapsulated phase change materials) were synthesized using a sol-gel method with SA (stearic acid) as the core and TiO2 (titania) as the shell material. The effects of the weight ratios of the SA/titania precursor TTIP (titanium tetraisopropoxide) on the morphology, thermal performance and thermal conductivity of the prepared nanocapsules are discussed. The experimental results indicate that the SA was encapsulated in spheres with minimum and maximum diameters of 583.4 and 946.4 nm, at encapsulation ratios between 30.36% and 64.76%. The results indicated that there was no chemical interaction between the core and shell materials, SA and TiO2, which were compatible with each other under controlled synthesis conditions of pH 10. The NEPCMs with high mass ratios of SA/TTIP exhibited enhanced phase change properties and higher encapsulation efficiencies but lower thermal conductivities than NEPCMs with low mass ratios. Good thermal reliability and chemical stability of the NEPCMs were obtained by cycling the material through 2500 melting/solidifying cycles. In conclusion, the outstanding thermal stability and reliability of the prepared nanocapsules make these materials appropriate phase change materials for thermal energy storage applications. � 2015 Elsevier Ltd. Final 2023-05-29T06:00:16Z 2023-05-29T06:00:16Z 2015 Article 10.1016/j.energy.2015.04.008 2-s2.0-84929509078 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929509078&doi=10.1016%2fj.energy.2015.04.008&partnerID=40&md5=a4ac5d23fdece95941622be66252a6d6 https://irepository.uniten.edu.my/handle/123456789/22331 85 635 644 Elsevier Ltd Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Chemical stability; Encapsulation; Heat storage; Nanocapsules; Sol-gel process; Sol-gels; Stearic acid; Thermal conductivity; Titanium; Titanium dioxide; Chemical interactions; Controlled synthesis; Encapsulation efficiency; Nano-encapsulation; Phase change property; Stability and reliabilities; Thermal Performance; Titanium tetraisopropoxide; Phase change materials; encapsulation; experimental study; fatty acid; gel; oxide; performance assessment; pH; stabilization; temperature effect; thermal conductivity; weight
author2 55872422100
author_facet 55872422100
Tahan Latibari S.
Mehrali M.
Mehrali M.
Afifi A.B.M.
Mahlia T.M.I.
Akhiani A.R.
Metselaar H.S.C.
format Article
author Tahan Latibari S.
Mehrali M.
Mehrali M.
Afifi A.B.M.
Mahlia T.M.I.
Akhiani A.R.
Metselaar H.S.C.
spellingShingle Tahan Latibari S.
Mehrali M.
Mehrali M.
Afifi A.B.M.
Mahlia T.M.I.
Akhiani A.R.
Metselaar H.S.C.
Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
author_sort Tahan Latibari S.
title Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
title_short Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
title_full Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
title_fullStr Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
title_full_unstemmed Facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
title_sort facile synthesis and thermal performances of stearic acid/titania core/shell nanocapsules by sol-gel method
publisher Elsevier Ltd
publishDate 2023
_version_ 1806424391850917888
score 13.222552