Journal
JOURNAL OF POROUS MATERIALS
Volume 25, Issue 3, Pages 657-664Publisher
SPRINGER
DOI: 10.1007/s10934-017-0478-y
Keywords
Carboxymethyl cellulose; Sodium montmorillonite; Carbon aerogel; Magnetic properties; Absorption capacity
Funding
- Fundamental Research Funds for Central Universities [E2572017EB05]
- Heilongjiang Province outstanding youth science fund [JC201301]
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In this paper, we present a facile approach for the synthesis of polysaccharide-based carbon aerogel by sol-gel processing, freeze-drying, and pyrolysis of a sodium carboxymethyl cellulose/sodium montmorillonite composite aerogel. The as-prepared carbon aerogel was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometry, nitrogen adsorption measurements, and vibrating sample magnetometry. The carbon aerogel obtained in this study possessed low density (0.064 +/- 0.0029 g/cm(3)), a high surface area (185 m(2)/g), and flame retardance. Measurements of the magnetic properties indicated that the carbon aerogel exhibited typical ferromagnetic characteristic at room temperature. The absorption capacity of the carbon aerogel for oils and organic solvents is as much as 10-20 times its own weight. Moreover, a method of combustion could be employed to recycle the carbon aerogel. The results imply that the carbon aerogel is a potential cost-effective adsorbent for oil and organic pollutants from aqueous solutions in environmental pollution cleanup.
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