Ion-crosslinked carboxymethyl cellulose/polyaniline bio-conducting interpenetrated polymer network: preparation, characterization and application for an efficient removal of Cr(VI) from aqueous solution
| Autor: | Ali Olad, Soheil Aber, Maryam Bastanian, Hamid Zebhi |
|---|---|
| Přispěvatelé: | Olad, Ali, Bastanian, Maryam, Aber, Soheil, Zebhi, Hamid |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Materials science Polymers and Plastics General Chemical Engineering 02 engineering and technology 010402 general chemistry 01 natural sciences polyaniline symbols.namesake chemistry.chemical_compound Adsorption Polyaniline Materials Chemistry medicine Fourier transform infrared spectroscopy hexavalent chromium carboxymethyl cellulose Aqueous solution nanocomposite Langmuir adsorption model 021001 nanoscience & nanotechnology 0104 chemical sciences Carboxymethyl cellulose chemistry Chemical engineering adsorption symbols Polymer blend 0210 nano-technology medicine.drug |
| Popis: | A simple, cheap, and environmentally friendly bio-conducting interpenetrated polymer blend network was prepared and introduced as a highly efcient system with suitable physical and mechanical properties for industrial removal of toxic Cr(VI) ionsfrom aqueous solution. Carboxymethyl cellulose/polyaniline (CMC/PANI) interpenetrated network (IPN) blend was preparedby simple simultaneous ion-cross-linking of CMC and PANI chains using Al³+ cations. The CMC/PANI bio-conductingnanocomposite was characterized using X-ray difraction (XRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and scanning electron microscopy equipped with an "energy dispersive X-ray spectroscopy"(SEM–EDX) technique. The CMC/PANI blend, ion-cross-linked by Al³+ cations, showed good stability and high surfacearea, proper for the removal of toxic Cr(VI) ions of the aqueous solution. Batch removal experiments were accomplished andthe impression of efective variables including solution pH, initial concentration of Cr(VI) ions, contact time, and adsorbentdosage were checked and optimized. The outcome of our fndings revealed that the removal of Cr(VI) ions by CMC/PANInanocomposite IPN strongly depends on solution pH. The removal information was matched with the Langmuir adsorptionisotherm model and the utmost monolayer adsorption capacity at pH 2 was 136.98 mg/g at 25 °C. The pseudo-second-orderkinetics were operated and the thermodynamic parameters suggested spontaneous and exothermic nature of the adsorptionprocess. Consequences indicated that CMC/PANI nanocomposite IPN could be an afective eco/environmentally friendlyadsorbent for the removal of Cr(VI) ions from aqueous solutions. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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