Adsorption removal of crystal violet from aqueous solution using a metal‐organic frameworks material, copper coordination polymer with dithiooxamide. Issue 5 (6th February 2013)

• Record Type: Journal Article
• Authors: Li, Xiaojuan; Zheng, Lingyan; Huang, Lianzhu; Zheng, Ou; Lin, Zhenyu; Guo, Longhua; Qiu, Bin; Chen, Guonan
• Is Part Of: Journal of applied polymer science. Volume 129:Issue 5(2013:Sep. 05)
• Page Start: 2857
• Page End: 2864
• Publication Date: 2013-02-06
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.39009
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The potential application of copper coordination polymer with dithiooxamide (H₂<italic>dtoa</italic>Cu), 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 H₂<italic>dtoa</italic>Cu can be best described by the Langmuir isotherm model (<italic>R</italic>² &gt; 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 (<italic>R</italic>² &gt; 0.9984) and the chemisorption was proved to be rate‐limiting step. Thermodynamic parameters, the change of free energy (Δ<italic>G</italic>°), entropy (Δ<italic>S</italic>°) and enthalpy (Δ<italic>H</italic>°), showed that the adsorption of CV on H₂<italic>dtoa</italic>Cu was feasible, spontaneous and endothermic process. Here we concluded that H₂<italic>dtoa</italic>Cu is a promising adsorbent for the removal of harmful dyes from aqueous solution. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013</p> </abstract>