Enhancing adsorption efficiencies of organic molecules through covalently bonded structures of magnetic carbon nanoparticles
- Title
- Enhancing adsorption efficiencies of organic molecules through covalently bonded structures of magnetic carbon nanoparticles
- Author
- 이영복
- Keywords
- Magnetic carbon nanomaterials; Porous materials; Pore filling; Interfacial interaction; Adsorption kinetics & mechanism; Biocompatibility
- Issue Date
- 2021-09
- Publisher
- ELSEVIER SCIENCE INC
- Citation
- In Journal of Industrial and Engineering Chemistry 25 January 2022 105:74-82
- Abstract
- 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 con-
nected with amine-terminated iron oxide nanoparticles (NPs) (Fe3O4-NH2) via a carbodiimide crosslink-
ing 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 com-
pared. The developed ACN-Fe3O4 material thoroughly utilizes the strengths of activated carbon and Fe3O4
themselves, exhibiting large specific surface areas (708.4 m2/g) and strong magnetic properties
(40.3 emu/g), resulting in high adsorption capacity (349.5 mg/g) and recycling efficiency (76 % of adsorp-
tion performance after four cycles). In addition, a study of the mechanism reveals that pore-filling pro-
cesses are dominant with minor contributions from electrostatic interactions, p–p interactions, and n–
p 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 contem-
porary MCNs, such as, low adsorption capacity, and weak magnetic properties.
- URI
- https://www.sciencedirect.com/science/article/pii/S1226086X21005165https://repository.hanyang.ac.kr/handle/20.500.11754/170542
- ISSN
- 1226-086X
- DOI
- 10.1016/j.jiec.2021.09.011
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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