The polymer adsorbents in the sponge form have the porous structure and high elasticity that endow them with good adsorption capacity and recyclability. The immobilization of nano-materials in the sponges can improve their adsorption properties evidently. The nano-MIL-101(Fe)@chitosan(CS) hybrid sponge was prepared by freeze-drying method. Characterization results indicated that rhombic nano-MIL-101(Fe) particles were uniformly dispersed throughout the hybrid sponge. The hybrid sponge showed higher efficiency for the adsorption of anionic dyes compared with the pristine CS sponge. The maximum adsorption capacity of MIL-101(Fe)@CS sponge for Acid Red 94 reached 4518 mg/g and the rapid suction experiments on different dyes showed that the hybrid sponge could be used as a filter for the quick removal of anionic dyes in low concentration solution.
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| http://dx.doi.org/10.1016/j.ijbiomac.2020.10.073 | DOI Listing |
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