期刊
HELIYON
卷 7, 期 1, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.heliyon.2021.e06070
关键词
Evans blue dye; Adsorption kinetics; XRD; SEM
Fe3O4@CFR@GO and Fe3O4@CFR@TiO2 nanocomposites were successfully fabricated by hydrothermal method and showed high efficiency in adsorptive degradation of Evans blue dye, with maximum adsorption capacities of 0.1435 mg/g and 9.345 mg/g respectively. Kinetic studies revealed that the adsorption of Evans blue dye followed a pseudo-first-order kinetic model.
Fe3O4@catechol formaldehyde resin coated @Graphene Oxide nanocomposite (Fe3O4@CFR@GO) and Fe3O4@-catechol formaldehyde resin coated @TiO2 (Fe3O4@CFR@TiO2) nanocomposite were fabricated by hydrothermal method. Particularly, catechol bunches on the highest layer of nanospheres to play a mussel-inspired chemistry to assist combined with graphene oxide (GO) to wrap the Fe3O4@ coated nanosphere. The prepared catalyst was proven to be very efficient with less than a minute and vey less dosage (15 -17 mg) in the adsorptive degradation of Evans blue dye. The adsorptive degradation of Evans blue dye with Fe3O4@CFR@GO and Fe3O4@CFR@TiO2 nanocomposites are studied by several variables like the dye concentration, dosage, pH, contact time and temperature. It shows maximum adsorption capacity of 0.1435 mg/g (Fe3O4@CFR@GO) and 9.345 mg/g (Fe3O4@CFR@TiO2) nanocomposites. The equilibrium concentration and the adsorption capacity were evaluated using three different isothermal models. The kinetic study determined that Evans blue dye adsorption was in good analogy with the pseudo-first-order kinetic model.
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