Journal
CARBOHYDRATE POLYMERS
Volume 134, Issue -, Pages 144-150Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.07.083
Keywords
Cellulose aerogels; COFe2O4; Magnetic properties; Template synthesis; Nanocomposites
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Funding
- National Natural Science Foundation of China [31270590, 31470584]
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With the increasing emphasis on green chemistry, it is becoming more important to develop environmentally friendly matrix materials for the synthesis of nanocomposites. Cellulose aerogels with hierarchical micro/nano-scale three-dimensional network beneficial to control and guide the growth of nanoparticles, are suitable as a class of ideal green nanoparticles hosts to fabricate multifunctional nanocomposites. Herein, a facile oxidative co-precipitation method was carried out to disperse CoFe2O4 nanoparticles in the cellulose aerogels matrixes, and the cellulose aerogels were prepared from the native wheat straw based on a green NaOH/polyethylene glycol solution. The mean diameter of the well-dispersed CoFe2O4 nanoparticles in the hybrid aerogels is 98.5 nm. Besides, the hybrid aerogels exhibit strong magnetic responsiveness, which could be flexibly actuated by a small magnet. And this feature also makes this class of magnetic aerogels possibly useful as recyclable adsorbents and some magnetic devices. Meanwhile, the mild green preparation method could also be extended to fabricate other miscellaneous cellulose-based nanocomposites. (C) 2015 Elsevier Ltd. All rights reserved.
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