Adsorption removal of crystal violet from aqueous solution using a metal-organic frameworks material, copper coordination polymer with dithiooxamide

Authors

  • Xiaojuan Li,

    Corresponding author
    1. Department of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, China
    • Department of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, China
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  • Lingyan Zheng,

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Lianzhu Huang,

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Ou Zheng,

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Zhenyu Lin,

    Corresponding author
    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
    • MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Longhua Guo,

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Bin Qiu,

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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  • Guonan Chen

    1. MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China
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Abstract

The potential application of copper coordination polymer with dithiooxamide (H2dtoaCu), one of the metal-organic frameworks (MOFs) in the adsorption removal of crystal violet (CV) from aqueous solution was studied. Batch adsorption experiments were carried out as a function of initial pH, adsorbent concentration, contact time, initial dye concentration and temperature. The adsorption of CV on H2dtoaCu can be best described by the Langmuir isotherm model (R2 > 0.9983) with maximum monolayer adsorption capacity of 165.83, 185.87, and 204.50 mg g−1 at 298, 308, and 318 K, respectively. The kinetics of CV adsorption followed pseudo-second-order model (R2 > 0.9984) and the chemisorption was proved to be rate-limiting step. Thermodynamic parameters, the change of free energy (ΔG°), entropy (ΔS°) and enthalpy (ΔH°), showed that the adsorption of CV on H2dtoaCu was feasible, spontaneous and endothermic process. Here we concluded that H2dtoaCu is a promising adsorbent for the removal of harmful dyes from aqueous solution. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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