Synthesis of Co3O4/graphene nanocomposite using paraffin wax for adsorption of methyl violet in water.
IET Nanobiotechnol
; 12(6): 787-794, 2018 Sep.
Article
en En
| MEDLINE
| ID: mdl-30104453
ABSTRACT
This study discusses the use of Co3O4 impregnated graphene (CoOIG) as an efficient adsorbent for the removal of methyl violet (MV) dye from wastewater. CoOIG nanocomposites have been prepared by pyrolyzing paraffin wax with cobalt acetate. The synthesised nanocomposite was characterised by X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscope, Raman spectroscopy, and Brunauer-Emmett-Teller isotherm studies. The above studies indicate that the composites have cobalt oxide nanoparticles of size 51-58â
nm embedded in the graphene nanoparticles. The adsorption studies were conducted with various parameters, pH, temperature and initial dye concentration, adsorbent dosage and contact time by the batch method. The adsorption of MV dye by the adsorbent CoOIG was about 90% initially at 15â
min and 98% dye removal at pH 5. The data were fitted in Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich and Sips isotherm models. Various thermodynamic parameters like Gibbs free energy, enthalpy, and entropy of the on-going adsorption process have also been calculated.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óxidos
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Parafina
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Nanocompuestos
/
Violeta de Genciana
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Grafito
Idioma:
En
Revista:
IET Nanobiotechnol
Asunto de la revista:
BIOTECNOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
India