Preparation of magnetic activated carbon fibers@Fe3O4 by electrostatic self-assembly method and adsorption properties for methylene blue
Jia-yi Ye, Man-qing Ye, Ling Zhang, Wen Li, Yan-shan Li, Zhi-wei Fu
TL;DR
This paper describes a method to create magnetic activated carbon fibers that efficiently adsorb methylene blue and can be easily separated using a magnetic field.
Contribution
A novel electrostatic self-assembly method to prepare magnetic activated carbon fibers with high adsorption capacity and easy separation.
Findings
The ideal loading conditions for MACF@Fe3O4 were a mass ratio of 1:1, 20 min, pH 9.36, and 22.5°C.
MACF@Fe3O4 achieved a 97.29% adsorption rate and a maximum capacity of 12.1616 mg·g−1 for methylene blue.
The adsorption process followed pseudo-first-order and pseudo-second-order kinetics at different time intervals.
Abstract
Nano-Fe3O4 was loaded onto coconut-based activated carbon fibres (CACF) using an electrostatic self-assembly method. The effects of the mass ratio of CACF to nano-Fe3O4, loading time, pH and temperature on the loading effect were investigated and ideal loading conditions were determined. To study the adsorption performance of MACF@Fe3O4 for methylene blue, the effects of the initial concentration, pH and time on the adsorption were investigated and the working conditions of adsorption were established. MACF@Fe3O4 was systematically characterized. Adsorption kinetics were investigated under ideal conditions. The ideal loading conditions for MACF@Fe3O4 were as follows: mass ratio of 1:1, 20 min, pH 9.36, 22.5°C. The saturation magnetization of MACF@Fe3O4 was 48.2263 emu·g−1, which could be quickly separated under an external magnetic field. When the dosage was 0.010 g, the adsorption rate…
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Taxonomy
TopicsAdsorption and biosorption for pollutant removal · Pickering emulsions and particle stabilization · Nanomaterials for catalytic reactions