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Journal of Colloid and Interface Science

Journal of Colloid and Interface Science

IF: 9.4
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A degradable polyimide aerogel with highly efficient solar-thermal-electric effect for oil absorption, deicing, and power generation

Published:7 December 2024 DOI: 10.1016/j.jcis.2024.12.024 PMID: 39657411
Shiwei Chen,?Dongfang Gao,?Lixia Long,?Wenxuan Cui,?Chaofeng Zhu,?Xue Wang,?Bing Li,?Yu Chen,?Yuanyue Li,?Chuanxing Jiang

Abstract

Photothermal materials are considered as promising materials because they can convert clean solar energy into thermal and electrical energy. However, developing degradable photothermal materials with highly efficient solar-thermal-electric energy conversion performance remains a huge challenge. Here, a superhydrophobic bio-polyimide/carbon quantum dots aerogel (S-BioPI/CQDs) is synthesized. S-BioPI/CQDs exhibits superhydrophobicity (WCA?=?155°) and super lipophilicity (OCA?=?0°). Remarkably, S-BioPI/CQDs shows good solar-thermal-electric energy conversion properties. The surface temperature of S-BioPI/CQDs can be up to 80?°C within 68?s under the solar light irradiation of 1?kW?m-2. S-BioPI/CQDs has large crude oil adsorption capacity (up to 68.8 times as much as its own weight) and deicing under sunlight irradiation. Meanwhile, the output voltage can be up to 706?mV under the solar light irradiation of 5?kW?m-2. S-BioPI/CQDs can resist the impact of harsh environments, such as high temperatures, dynamic ocean environments, and strong acid environment. More importantly, S-BioPI/CQDs can be degraded completely within only 8?min. This is the first time to achieve the degradation of PI aerogel. This study provides a new and effective method to prepare advanced photothermal materials with degradable performances for the efficient use of solar energy to solve the fossil fuel crisis and protect the environment.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Citric acid 77-92-9 C6H8O7 2073 suppliers $5.00-$2290.00
N,N-Dimethylformamide 68-12-2 C3H7NO 1313 suppliers $11.20-$12200.00
Pyridine 110-86-1 C5H5N 976 suppliers $9.00-$25600.00
Ethanol 64-17-5 C2H6O 955 suppliers $10.00-$28350.00

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