title: Synthesis of well-dispersed magnetic CoFe2O4 nanoparticles in cellulose aerogels via a facile oxidative co-precipitation method.
abstract: 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.
authors.affiliation: Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China. Electronic address: wancaichaojy@163.com.
authors.forename: Caichao
authors.initials: C
authors.lastname: Wan
authors.affiliation: Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China. Electronic address: lijiangroup@163.com.
authors.forename: Jian
authors.initials: J
authors.lastname: Li
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D011232:Chemical Precipitation; D003035:Cobalt / Q000737:chemistry*; D005290:Ferric Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D055772:Green Chemistry Technology; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D010084:Oxidation-Reduction
chemical_list: D005290:Ferric Compounds; D005782:Gels; D058185:Magnetite Nanoparticles; C569492:cobalt ferrite; D003035:Cobalt; D002482:Cellulose
keywords: Cellulose aerogels; CoFe(2)O(4); Magnetic properties; Nanocomposites; Template synthesis