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Min-min WANG, Li WANG. 2013: Synthesis and characterization of carboxymethyl cellulose/organic montmorillonite nanocomposites and  its adsorption behavior for Congo Red dye. Water Science and Engineering, 6(3): 272-282. doi: 10.3882/j.issn.1674-2370.2013.03.004
Citation: Min-min WANG, Li WANG. 2013: Synthesis and characterization of carboxymethyl cellulose/organic montmorillonite nanocomposites and  its adsorption behavior for Congo Red dye. Water Science and Engineering, 6(3): 272-282. doi: 10.3882/j.issn.1674-2370.2013.03.004
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Synthesis and characterization of carboxymethyl cellulose/organic montmorillonite nanocomposites and  its adsorption behavior for Congo Red dye

doi: 10.3882/j.issn.1674-2370.2013.03.004

  • College of Material Science and Art Design, Inner Mongolia Agricultural University, Huhhot 010018, P. R. China

Funds:  This work was supported by the Special Fund for National Forestry Industry Scientific Research in the Public Interest of China (Grant No. 201104004), the Natural Science Foundation of China (Grant No. 20867004), and the Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region.
More Information
  • Corresponding author: Li WANG
  • Received Date: 2012-04-13
    Abstract
  • A series of carboxymethyl cellulose/organic montmorillonite (CMC/OMMT) nanocomposites with different weight ratios of carboxymethyl cellulose (CMC) to organic montmorillonite (OMMT) were synthesized under different conditions. The nanocomposites were characterized by the Fourier transform infrared (FT-IR) spectrophotometer, X-ray diffraction (XRD) method, transmission electron microscope (TEM), scanning electron microscope (SEM), and thermal gravimetric (TG) analysis. The results showed that the introduction of CMC may have different influences on the physico-chemical properties of OMMT and intercalated-exfoliated nanostructures were formed in the nanocomposites. The effects of different reaction conditions on the adsorption capacity of samples for Congo Red (CR) dye were investigated by controlling the amount of hexadecyl trimethyl ammonium bromide (CTAB), the weight ratio of CMC to OMMT, the reaction time, and the reaction temperature. Results from the adsorption experiment showed that the adsorption capacity of the nanocomposites can reach 171.37 mg/g, with the amount of CTAB being 1.0 cation exchange capacity (CEC) of MMT, the weight ratio of CMC to OMMT being 1?1, the reaction time being 6 h, and the reaction temperature being 60℃. The CMC/OMMT nanocomposite can be used as a potential adsorbent to remove CR dye from an aqueous solution.

     

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