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- Title
Adsorption removal of crystal violet from aqueous solution using a metal-organic frameworks material, copper coordination polymer with dithiooxamide.
- Authors
Li, Xiaojuan; ZhENg, Lingyan; Huang, Lianzhu; ZhENg, Ou; Lin, ZhENyu; Guo, Longhua; Qiu, Bin; ChEN, Guonan
- Abstract
The potential application of copper coordination polymer with dithiooxamide (H2 dtoaCu), 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 dtoaCu 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 (Δ G°), entropy (Δ S°) and enthalpy (Δ H°), showed that the adsorption of CV on H2 dtoaCu was feasible, spontaneous and endothermic process. Here we concluded that H2 dtoaCu is a promising adsorbent for the removal of harmful dyes from aqueous solution. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
- Subjects
METAL-organic frameworks; COPPER; COPPER compounds; POLYMERS; AQUEOUS solutions; GENTIAN violet
- Publication
Journal of Applied Polymer Science, 2013, Vol 129, Issue 5, p2857
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.39009