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Efficient and selective sequestration of perfluorinated compounds and hexavalent chromium ions using a multifunctional spinel matrix decorated carbon backbone N-rich polymer and their mechanistic investigations
- Source :
- Journal of Molecular Liquids. 326:115336
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The removal of emerging contaminants including heavy metals and perfluorinated compounds has been an increasing concern globally due to their harmful effects on human health and other creatures in the environment. Mixtures of perfluorinated chemicals with heavy metals are often found in polluted areas, which is a critical challenge in water remediation. This study proposes a multifunctional magnetic adsorbent, cerium-incorporated ferrite (CMF) decorated polyaniline (PANI) (CMFx%@PANI) hybrid composites by co-precipitation followed by calcination methods. FTIR, VSM, and zeta potential measurements confirmed the successful incorporation of CMF on PANI. The textural properties and surface morphologies of CMFx%@PANI were examined using BET, FE-SEM, HR-TEM, and EDX analysis. The conventional raw forms of CMF nanoparticles and PANI were inadequate for the removal of the mentioned contaminants. However, the synchronous role of PANI with CMF nanoparticles exhibited higher adsorption capacities toward the perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), and hexavalent chromium (Cr(VI)) ions than the individual forms. The sorption kinetics and isotherms indicated that adsorption behaviors of PFOA, PFOS, and Cr(VI) onto CMFx%@PANI followed a pseudo-second-order and Langmuir isotherm model, respectively. The feasible mechanisms of PFOA, PFOS, and Cr(VI) adsorption on CMFx%@PANI were investigated using XPS analysis.
- Subjects :
- Perfluorooctanesulfonic acid
02 engineering and technology
010402 general chemistry
01 natural sciences
law.invention
chemistry.chemical_compound
symbols.namesake
Adsorption
law
Polyaniline
Materials Chemistry
Zeta potential
Calcination
Physical and Theoretical Chemistry
Hexavalent chromium
Spectroscopy
Langmuir adsorption model
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Electronic, Optical and Magnetic Materials
chemistry
Chemical engineering
symbols
Perfluorooctanoic acid
0210 nano-technology
Subjects
Details
- ISSN :
- 01677322
- Volume :
- 326
- Database :
- OpenAIRE
- Journal :
- Journal of Molecular Liquids
- Accession number :
- edsair.doi...........3ff9d9d4c03d1eaba5bfa847df104e02