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Preparation of Carbonized Kapok Fiber/Reduced Graphene Oxide Aerogel for Oil‐Water Separation
Author(s) -
Zhou Ji,
Du Enhui,
He Yu,
Fan Yunde,
Ye Yong,
Tang Bin
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000168
Subject(s) - aerogel , carbonization , graphene , sorption , oxide , materials science , chemical engineering , hexadecane , adsorption , wetting , composite number , composite material , chemistry , organic chemistry , nanotechnology , metallurgy , engineering
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 of n ‐hexane solvent.