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    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/61838


    Title: Adsorption of cationic dyes onto mesoporous silica
    Authors: Huang CH;Chang KP;Ou HD;Chiang YC;Wang CF
    教師: 王竹方
    Date: 2011
    Publisher: Elsevier
    Relation: MICROPOROUS AND MESOPOROUS MATERIALS, Volume: 141, Issue: 1-3, Pages: 102-109
    Keywords: Dye
    Adsorption
    Mesoporous
    SBA-15
    Abstract: Highly-ordered mesoporous SBA-15 molecular sieves were successfully synthesized through direct-synthesis using non-ionic surfactants as structure directing agent under strong acidic conditions. The textual and structural properties of the prepared materials were characterized by powder X-ray diffraction patterns (XRD), nitrogen physisorption isotherms, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). In terms of adsorption properties, the performance was examined by adsorption of dyes on prepared materials. It was observed that SBA-15 exhibited an excellent adsorptive capability of catiorfic molecules but almost no adsorption to anionic and neutral molecules. The isotherm models, kinetic models, and thermodynamic properties were analyzed to describe the adsorption behavior of prepared materials. Langmuir model, Freundlich model, and pseudo-second-order kinetics were well-fitted in the simulation of the adsorption behavior of dyes on prepared materials. The synthesized mesoporous SBA-15 materials were found to be effective adsorbents for MB and JGB from aqueous solutions.
    URI: http://www.elsevier.com/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/61838
    Appears in Collections:[生醫工程與環境科學系] 期刊論文

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