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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Main Authors: Xue Yang Goh, Ren Hong Ong, Phuc T. T. Nguyen, Tianliang Bai, Dave Aw, Tian Li, Luon Tan Nguyen, Hai M. Duong
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/6/2727
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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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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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