Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications
Metal-based aerogels have attracted numerous studies due to their unique physical, structural, thermal, and chemical properties. Utilizing aluminum waste, a novel, facile, environmentally friendly approach to aluminum-based aerogels is proposed. In this work, the aluminum-based aerogels produced do...
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MDPI AG
2023-03-01
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Series: | Molecules |
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author | Xue Yang Goh Ren Hong Ong Phuc T. T. Nguyen Tianliang Bai Dave Aw Tian Li Luon Tan Nguyen Hai M. Duong |
author_facet | Xue Yang Goh Ren Hong Ong Phuc T. T. Nguyen Tianliang Bai Dave Aw Tian Li Luon Tan Nguyen Hai M. Duong |
author_sort | Xue Yang Goh |
collection | DOAJ |
description | Metal-based aerogels have attracted numerous studies due to their unique physical, structural, thermal, and chemical properties. Utilizing aluminum waste, a novel, facile, environmentally friendly approach to aluminum-based aerogels is proposed. In this work, the aluminum-based aerogels produced do not use toxic chemicals unlike conventional aerogel production. Aluminum powder, with poly(acrylic acid) and carboxymethyl cellulose as binders, is converted into aluminum-based aerogels using the freeze-drying method. The aluminum-based aerogels have low density (0.08–0.12 g/cm<sup>3</sup>) and high porosity (93.83–95.68%). The thermal conductivity of the aerogels obtained is very low (0.038–0.045 W/m·K), comparable to other types of aerogels and commercial heat insulation materials. Additionally, the aerogels can withstand temperatures up to 1000 °C with less than 40% decomposition. The aerogels exhibited promising oil absorption properties with their absorption capacity of 9.8 g/g and 0.784 g/cm<sup>3</sup>. The Young’s modulus of the aerogels ranged from 70.6 kPa to 330.2 kPa. This study suggests that aluminum-based aerogels have potential in thermal insulation and oil absorption applications. |
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format | Article |
id | doaj.art-c882481846b04c3587dbcd6ca22addec |
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issn | 1420-3049 |
language | English |
last_indexed | 2024-03-11T06:07:45Z |
publishDate | 2023-03-01 |
publisher | MDPI AG |
record_format | Article |
series | Molecules |
spelling | doaj.art-c882481846b04c3587dbcd6ca22addec2023-11-17T12:54:19ZengMDPI AGMolecules1420-30492023-03-01286272710.3390/molecules28062727Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption ApplicationsXue Yang Goh0Ren Hong Ong1Phuc T. T. Nguyen2Tianliang Bai3Dave Aw4Tian Li5Luon Tan Nguyen6Hai M. Duong7Department of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeDepartment of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeMetal-based aerogels have attracted numerous studies due to their unique physical, structural, thermal, and chemical properties. Utilizing aluminum waste, a novel, facile, environmentally friendly approach to aluminum-based aerogels is proposed. In this work, the aluminum-based aerogels produced do not use toxic chemicals unlike conventional aerogel production. Aluminum powder, with poly(acrylic acid) and carboxymethyl cellulose as binders, is converted into aluminum-based aerogels using the freeze-drying method. The aluminum-based aerogels have low density (0.08–0.12 g/cm<sup>3</sup>) and high porosity (93.83–95.68%). The thermal conductivity of the aerogels obtained is very low (0.038–0.045 W/m·K), comparable to other types of aerogels and commercial heat insulation materials. Additionally, the aerogels can withstand temperatures up to 1000 °C with less than 40% decomposition. The aerogels exhibited promising oil absorption properties with their absorption capacity of 9.8 g/g and 0.784 g/cm<sup>3</sup>. The Young’s modulus of the aerogels ranged from 70.6 kPa to 330.2 kPa. This study suggests that aluminum-based aerogels have potential in thermal insulation and oil absorption applications.https://www.mdpi.com/1420-3049/28/6/2727aluminum-based aerogelaluminum foilthermal insulationthermal stabilityoil absorption |
spellingShingle | Xue Yang Goh Ren Hong Ong Phuc T. T. Nguyen Tianliang Bai Dave Aw Tian Li Luon Tan Nguyen Hai M. Duong Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications Molecules aluminum-based aerogel aluminum foil thermal insulation thermal stability oil absorption |
title | Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications |
title_full | Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications |
title_fullStr | Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications |
title_full_unstemmed | Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications |
title_short | Advanced Fabrication and Multi-Properties of Aluminum-Based Aerogels from Aluminum Waste for Thermal Insulation and Oil Absorption Applications |
title_sort | advanced fabrication and multi properties of aluminum based aerogels from aluminum waste for thermal insulation and oil absorption applications |
topic | aluminum-based aerogel aluminum foil thermal insulation thermal stability oil absorption |
url | https://www.mdpi.com/1420-3049/28/6/2727 |
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