Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Nanostructure of Aerogels and Their Applications in Thermal Energy Insulation

(2019) Nanostructure of Aerogels and Their Applications in Thermal Energy Insulation. Acs Applied Energy Materials. pp. 5319-5349. ISSN 2574-0962

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The recent global energy context has been recognized as evidence for the need to reduce our energy consumption, to prolong fossil fuel supplies and minimize shortage, and to decelerate greenhouse gas transpiration. Over the past few years, using an insulator and decreasing its thermal conductivity have been recognized as the most effective way to reduce energy consumption. Aerogels as superinsulating materials permit reduction of the heat exchange between two environments while producing facile sol-gel and diverse drying routes. Aerogels have intrigued scientists and engineers due to their unique nanocharacteristics, such as low density, fine internal void spaces, and open-pore geometry, which originate from sol particles in a 3D random network. Noteworthy are aerogel-based materials that have a supreme potential as thermal insulation owing to their very low thermal conductivity based on trapped air in the meso-/nanoporous structure. Indeed, aerogels have great appeal in terms of their thermal efficiency, producing simplicity and performance reliability as compared with a traditional insulator. In this work, we will review the main milestones along with the concept of aerogels and then discuss some new trends, strategies, and opportunities in employing various morphological and nanostructural control methods to improve the performance of aerogels, especially enhancing insulation efficiency or decreasing thermal conductivity. The focus will be on (I) tailoring the porous structure of a carbon-based aerogel such as graphene oxide and reduced graphene oxide to accommodate high thermal behavior and (II) designing strategies to achieve intrinsically superinsulating materials in synthesized polymer and bio-based materials, with/without embedding an additional component.

Item Type: Article
Keywords: organic aerogels carbon-based aerogels thermal insulation porous structure preparation strategy thermal conductivity sol-gel polymerization resorcinol-formaldehyde xerogels polyimide composite aerogels carbon aerogels graphene oxide mechanical-properties facile fabrication cellulose aerogels hybrid aerogel heat-transfer Chemistry Energy & Fuels Materials Science
Page Range: pp. 5319-5349
Journal or Publication Title: Acs Applied Energy Materials
Journal Index: ISI
Volume: 2
Number: 8
Identification Number:
ISSN: 2574-0962
Depositing User: مهندس مهدی شریفی

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