Layered double hydroxide–borate composites supported on magnetic nanoparticles: preparation, characterization and molecular dynamics simulations

Magnetic nanocomposites involving tetraborate ion (TB)-intercalated Mg–Al-layered double hydroxide (LDH) shell supported on magnesium ferrite core particles are synthesized, characterized, and compared with their non-magnetic analogues. The compositions of the obtained nanocomposites were determined...

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Bibliographic Details
Published in:Journal of porous materials 2020, Vol.27 (3), p.735-743
Main Authors: Ay, Ahmet Nedim, Zumreoglu-Karan, Birgul, Kalinichev, Andrey G., Rives, Vicente, Trujillano, Raquel, Temel, Abidin
Format: Article
Language:English
Subjects:
Aluminum
Boron
Catalysis
Characterization and Evaluation of Materials
Chemical Sciences
Chemistry
Chemistry and Materials Science
Computer simulation
Dynamic structural analysis
Electron microscopy
Fourier transforms
Hydroxides
Interlayers
Magnesium ferrites
Magnetic measurement
Magnetic properties
Magnetometers
Microscopy
Molecular dynamics
Molecular structure
Nanocomposites
Nanoparticles
Particle size distribution
Physical Chemistry
Room temperature
Water chemistry
X ray powder diffraction
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Summary:Magnetic nanocomposites involving tetraborate ion (TB)-intercalated Mg–Al-layered double hydroxide (LDH) shell supported on magnesium ferrite core particles are synthesized, characterized, and compared with their non-magnetic analogues. The compositions of the obtained nanocomposites were determined and structural investigations were made by powder X-ray diffraction and Fourier transform infrared spectroscopy. Particle characteristics were examined by size distribution, specific surface area measurements, scanning electron microscopy and transmission electron microscopy. Room-temperature magnetic measurements were performed with a vibrating sample magnetometer. The dynamics and structure of the interlayer water molecules and borate ions were studied by molecular dynamics simulations. Analytical and modeling studies verified that the TB ions were arranged between the LDH layers in oblique positions. The products were found to carry ca. 6% boron (10 17 B atom/μg nanocomposite). The magnetic nanocomposite showed superparamagnetic properties and can potentially find applications in biomedical fields for the site-specific delivery of bio-potent boron agents.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-019-00853-4