Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 43, Issue 12, Pages 2418-2427Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.202000168
Keywords
Carbonaceous aerogel; Graphene oxide; Kapok fiber; Oil absorption; Oil-water separation
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Funding
- Hubei Provincial Natural Science Foundation of China [2018CFB523]
- Open Project of Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education (Hubei University) [KLSAOFM1712]
- Open Project of Hubei Key Laboratory of the Forensic Science (Hubei University of Police) [2018KFKT06]
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A carbonized composite aerogel was fabricated based on kapok fibers (KFs) and graphene oxide (GO) through hydrothermal and carbonizing reactions. The as-prepared carbonized kapok fiber/reduced graphene oxide (CKF/RGO) aerogel exhibited special features including light weight, fire resistance, stable structure, hydrophobicity, and oleophilicity. The wettability of the KF/GO aerogel was transformed to hydrophobicity after carbonization, which provided the CKF/RGO aerogel with a distinct ability for oil-water separation. The CKF/RGO aerogel was able to adsorb oil liquids up to 110 times of its own weight. The sorption capacity of the CKF/RGO aerogel was still higher than 90 % of the initial sorption capacity after eleven sorption-combustion cycles ofn-hexane solvent.
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