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31.19

Hoá học

Nanocomposite tái sử dụng của CoFe2O4/chitosan-ghép-poly(axit acrylic) để loại bỏ Ni (II) trong dung dịch nước

Reusable nanocomposite of CoFe2O4/chitosan-graft-poly(acrylic acid) for removal oJ Ni(II) from aqueous solution

Nanoscience and Nanotechnology

2014

2

1-7

2043-6262

In this paper, CoFe2O/chitosan-graft-poly(acrylic acid) (CoFe2O4/CS-graft-PAA) nanocomposites were prepared successfully by coprecipitation of the compounds in alkaline solution and were used for removal of nickel (II) ions from aqueous solution. The sorption rate was affected significantly by the initial concentration of the solution, sorbent amount, and pH value of the solution. Batch experiments were conducted to investigate the adsorption capacity under different initial concentration (ranging from 25 to 150 mg L -1), solution pH (4.1, 5.3,6.4 and 7.6), and contact time. These nanocomposites can be recycled conveniently from water with the assistance of an external magnet because of their exceptional properties. The prepared nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), x-ray powder diffraction (XRD), and thermogravimetric analysis (TGA).

TTKHCNQG, CLt 740