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Facile Fabrication of Magnetic Metal-Organic Framework Composites for the Highly Selective Removal of Cationic Dyes
- Source :
- Materials, Materials; Volume 11; Issue 5; Pages: 744, Materials, Vol 11, Iss 5, p 744 (2018)
- Publication Year :
- 2018
-
Abstract
- In this work, we show a novel magnetic composite material Fe3O4@HPU-9 (HPU-9 = {[Cd(L)0.5(H2O)](DMA)(CH3CN)}n) (H4L = 1,1′-di(3,5-dicarbonylbenzyl)-2,2′bimidazoline, DMA = N,N-dimethylacetamide) constructed by in situ growth of HPU-9 on Fe3O4, which has excellent absorption of cationic dyes from aqueous solution. The Fe3O4@HPU-9 particle possesses a well-defined core-shell structure consisting of a Fe3O4 core (diameter: 190 nm) and a HPU-9 shell (thickness: 10 nm). In the composite, the HPU-9 shell contributes to the capsulation of cationic dyes through electrostatic attractions between HPU-9 and cationic dyes, while the Fe3O4 core serves as magnetic particle. The maximum absorption capacity of Fe3O4@HPU-9 for R6G was 362.318 mg·g−1. The absorption kinetics data were well described by a psedo-second-order model (R2 > 0.99), and the equilibrium data were also well fitted to Langmuir isotherm model (R2 > 0.99). Our data confirmed that the proposed magnetic composite could be recycled and reused several times without centrifugal separation, making it more convenient, economic and efficient than common adsorbents.
- Subjects :
- Materials science
Composite number
magnetic composite material
core-shell structure
the capsulation of cationic dyes
electrostatic attractions
02 engineering and technology
Magnetic particle inspection
010402 general chemistry
lcsh:Technology
01 natural sciences
Article
symbols.namesake
Adsorption
General Materials Science
lcsh:Microscopy
lcsh:QC120-168.85
Aqueous solution
lcsh:QH201-278.5
lcsh:T
Cationic polymerization
Langmuir adsorption model
021001 nanoscience & nanotechnology
0104 chemical sciences
Chemical engineering
lcsh:TA1-2040
symbols
Particle
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
Absorption (chemistry)
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
lcsh:TK1-9971
Subjects
Details
- ISSN :
- 19961944
- Volume :
- 11
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Materials (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....7af525e9f6ab14da0ee1f96014489f1e