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A novel porous nanocomposite of aminated silica MCM‐41 and nylon‐6: Isotherm, kinetic, and thermodynamic studies on adsorption of Cu(II) and Cd(II)
Author(s) -
Mohammadnezhad Gholamhossein,
Soltani Roozbeh,
Abad Saeed,
Dinari Mohammad
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45383
Subject(s) - adsorption , aqueous solution , thermogravimetric analysis , freundlich equation , endothermic process , nanocomposite , materials science , metal ions in aqueous solution , chemical engineering , chemistry , nuclear chemistry , metal , organic chemistry , composite material , metallurgy , engineering
Porous amine‐modified MCM‐41/Nylon‐6 nanocomposite (NH 2 ‐MCM‐41/NY6 NC) was synthesized by a facile solution casting protocol, which was used as an effective adsorbent for the removal of Cu(II) and Cd(II) from aqueous media. The physicochemical properties of NH 2 ‐MCM‐41/NY6 NC were studied by scanning and transmission electron microscopies, thermogravimetric analysis, etc. The influence of pH, adsorbent dose, contact time and initial concentration on adsorption performance were investigated in detail. Kinetic and isotherm parameters were evaluated and the data fitted well to the pseudo‐second order and Freundlich isotherm model, respectively. The maximum adsorption capacities of Cu(II) and Cd(II) were about 35.84 and 27.5 mg·g −1 , respectively. The K d of NH 2 ‐MCM‐41/NY6 NC for Cu(II) (>10 5m L g − 1) and Cd(II) (>10 3m L g − 1) ions uptake in aqueous solution, showed very good values. Thermodynamic parameters suggest that the adsorption is a spontaneous process with an endothermic nature. According to the results obtained, we conclude that this novel porous NH 2 ‐MCM‐41/NY6 NC could be used for the removal of heavy metal ions from an aqueous solution. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45383.