Synthesis of magnetic functionalized MWCNT nanocomposite through surface RAFT co-polymerization of acrylic acid and N-isopropyl acrylamide for removal of cationic dyes from aqueous solutions
| Autor: | Soleyman Hosseinzadeh, Hossein Hosseinzadeh, Zahra Khodaparast, Shahryar Pashaei |
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| Rok vydání: | 2018 |
| Předmět: |
Polymers
Health Toxicology and Mutagenesis 02 engineering and technology Wastewater 010402 general chemistry 01 natural sciences Nanocomposites Polymerization Magnetics chemistry.chemical_compound Adsorption Cations Coloring Agents Acrylic acid Acrylamides Aqueous solution Nanocomposite Public Health Environmental and Occupational Health Cationic polymerization Water Chain transfer General Medicine Raft 021001 nanoscience & nanotechnology Pollution 0104 chemical sciences Kinetics Acrylates chemistry Chemical engineering Thermodynamics 0210 nano-technology Water Pollutants Chemical |
| Zdroj: | Ecotoxicology and Environmental Safety. 161:34-44 |
| ISSN: | 0147-6513 |
| Popis: | In this study, magnetic multi-walled carbon nanotube (MMWCNT) composites were prepared via surface reversible addition fragmentation chain transfer (RAFT) co-polymerization of acrylic acid (AA) and N-isopropyl acrylamide (NIPAM) in the presence of Fe3O4 nanoparticles. First, a novel RAFT agent (RA) was prepared and then immobilized onto the surface of MWCNT to fabricate RA-g-MWCNT. Then, Fe3O4 nanoparticles were attached onto the surface of RA-g-MWCNT. Finally, RAFT co-polymerization of AA and NIPAM monomers was carried out via Fe3O4-g-RA-g-MWCNT RAFT agent. The structure and morphology of the prepared polymer-coated MWCNT was examined by FTIR, SEM, TEM, XRD, VSM, and TGA. The adsorption behaviours of the cationic dyes were studied. The equilibrium isotherm and kinetics of cationic dyes were investigated. Thermodynamics investigations also depicted that the adsorptions of cationic dyes were spontaneous and endothermic in nature. The synthesized dye adsorbent with high adsorption capacities, reusability, and easy recovery makes it as a good candidate for wastewater treatment. |
| Databáze: | OpenAIRE |
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