Issue 6, 2016

Ultralight, compressible and multifunctional carbon aerogels based on natural tubular cellulose

Abstract

Ultralight, compressible and multifunctional carbon aerogels (UCM aerogels) have broad potential applications in various fields including thermal insulation, oil absorption and electronics. However, the preparation of UCM aerogels has been proven to be very challenging. Herein, we report a novel approach for the fabrication of UCM aerogels by pyrolysis of aerogels composed of kapok fibers (KFs), a kind of natural cellulose with a tubular structure. Different from the frequently used freeze-drying approach, the wet KF aerogels can be dried directly in an oven without any shrinkage. The fascinating UCM aerogels feature ultralow density (∼1.0 mg cm−3), high compressibility, high electrical conductivity (0.1 S cm−1), excellent fire-resistance and very high absorption capacity (147–292 g g−1) for organic liquids. Furthermore, the UCM aerogels can be easily endowed with various other functions, e.g., magnetic responsivity and superhydrophobicity. The successful creation of the UCM aerogels may provide new insights into the design of UCM aerogels for various applications, as the UCM aerogels can be prepared via a very simple procedure.

Graphical abstract: Ultralight, compressible and multifunctional carbon aerogels based on natural tubular cellulose

Supplementary files

Article information

Article type
Communication
Submitted
08 Dec 2015
Accepted
14 Jan 2016
First published
14 Jan 2016

J. Mater. Chem. A, 2016,4, 2069-2074

Author version available

Ultralight, compressible and multifunctional carbon aerogels based on natural tubular cellulose

J. Zhang, B. Li, L. Li and A. Wang, J. Mater. Chem. A, 2016, 4, 2069 DOI: 10.1039/C5TA10001A

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