首页|Enhancing adsorption efficiencies of organic molecules through covalently bonded structures of magnetic carbon nanoparticles

Enhancing adsorption efficiencies of organic molecules through covalently bonded structures of magnetic carbon nanoparticles

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  • NSTL
  • Elsevier
This study introduces a facile method for synthesizing covalently bonded magnetic carbon nanoparticles (MCNs) in which carboxylic acid-functionalized activated carbon nanospheres (ACN-COOH) are connected with amine-terminated iron oxide nanoparticles (NPs) (Fe3O4-NH2) via a carbodiimide crosslinking reaction. The adsorption characteristics of the developed magnetic nanoparticles (ACN-Fe3O4) were investigated using a standard cationic dye (methylene blue, MB). Two additional MCNs (multi-core and core@shell structures) were also prepared, and their adsorption performances were extensively compared. The developed ACN-Fe3O4 material thoroughly utilizes the strengths of activated carbon and Fe3O4 themselves, exhibiting large specific surface areas (708.4 m(2)/g) and strong magnetic properties (40.3 emu/g), resulting in high adsorption capacity (349.5 mg/g) and recycling efficiency (76 % of adsorption performance after four cycles). In addition, a study of the mechanism reveals that pore-filling processes are dominant with minor contributions from electrostatic interactions, pi-pi interactions, and nit interactions. The developed covalently bonded magnetic carbon nanoparticles (ACN-Fe3O4) can thus be considered as competent adsorbents with the potential to compensate for the drawbacks of contemporary MCNs, such as, low adsorption capacity, and weak magnetic properties. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Magnetic carbon nanomaterialsPorous materialsPore fillingInterfacial interactionAdsorption kinetics & mechanismBiocompatibilityWASTE-WATER TREATMENTACTIVATED CARBONMETHYLENE-BLUEDYE ADSORPTIONREMOVALOXIDEIRONADSORBENTSCATALYSTNANOCOMPOSITES

Luu, Quy Son、Do, Uyen Thi、Kim, Dokyung、Kim, Jiwon、Jo, Donghyeok、Nguyen, Quynh Thi、Lee, Youngbok

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Hanyang Univ

2022

10.1016/j.jiec.2021.09.011

Journal of industrial and engineering chemistry

Journal of industrial and engineering chemistry

EISCI
ISSN：1226-086X
年,卷(期)：2022.105
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