Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Paramagnetism01:30

Paramagnetism

3.1K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
3.1K
Ferromagnetism01:31

Ferromagnetism

3.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.4K
Colors and Magnetism03:02

Colors and Magnetism

14.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.4K
Diamagnetism01:26

Diamagnetism

3.2K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
3.2K
Valence Bond Theory02:42

Valence Bond Theory

11.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Silibinin-Loaded Proniosomal Gel for Cutaneous Application: Pharmaco-Technical Characterization and In Vitro-In Ovo Biocompatibility.

Gels (Basel, Switzerland)·2026
Same author

An Adaptive Cholic Acid Dimer for Selective Encapsulation.

International journal of molecular sciences·2026
Same author

Preliminary Study of the Impact of Zwitterionic Ion-Exchange Resins on the Phenolic and Volatile Profiles of Fetească Neagră and Cabernet Sauvignon Wines.

Foods (Basel, Switzerland)·2026
Same author

Bioactive-Enriched Chitosan/Poly(vinyl Alcohol) Electrospun Nanofibers for Wound Healing: In Vitro and In Vivo Evaluation.

Pharmaceuticals (Basel, Switzerland)·2026
Same author

Electrospun Chitosan-Poly(vinyl alcohol) Nanofibers Functionalized with Natural Bioactive Compounds: Design, Physicochemical Characterization and Release Profiles.

Polymers·2026
Same author

Self-Assembled (Nano)Structures of Human Serum Albumin with Thermoresponsive Chitosan-<i>g</i>-PNIPAM Graft Copolymer.

Polymers·2026
Same journal

VOCs Adsorption and Exchange Properties in Bispidine-Based Mn(II) 1D CPs Made of Orthogonally Oriented Linear Chains.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Electrosynthesis of Glycine From Nitrate and Glyoxylic Acid Over a Bi<sub>2</sub>S<sub>3</sub> Nanosheets-Based Catalyst.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Symmetry Breaking in Achiral Porphyrins: Noncovalent Origins of Emergent Optical Activity.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Modulation of O<sub>2</sub> Affinity and Enzymatic Activity of Core‒Shell Structured Hemoglobin Nanoparticles.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Stepwise Synthesis of Tetrabenzotriazaporphyrins (TBTAPs) and Their Open 2- and 3-Ring Fragments.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same journal

Geometry-Based Neural-Network Prediction of Electron Localization Function Topology in Dense Hydrogen.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
See all related articles

Related Experiment Video

Updated: Mar 12, 2026

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

9.3K

Superparamagnetic Composites Based on Ionic Resin Beads/CaCO3 /Magnetite.

Ion Bunia1, Vlad Socoliuc2, Ladislau Vekas2

  • 1"Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley 41A, 700487, Iasi, Romania.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 3, 2016
PubMed
Summary
This summary is machine-generated.

Superparamagnetic composites were created using CaCO3 mineralization and magnetite nanoparticles. These magnetic composites facilitate the separation of materials, showing promise for applications like ion exchange.

Keywords:
CaCO3cation ion exchangemagnetic fluidsmaterials sciencesuperparamagnetic composites

More Related Videos

Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles
08:26

Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles

Published on: October 19, 2015

12.8K
Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

10.5K

Related Experiment Videos

Last Updated: Mar 12, 2026

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

9.3K
Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles
08:26

Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles

Published on: October 19, 2015

12.8K
Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
10:23

Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells

Published on: December 13, 2016

10.5K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Superparamagnetic composites offer unique magnetic manipulation capabilities.
  • Mineralization of calcium carbonate (CaCO3) onto polymer templates is a method for creating functional materials.
  • Magnetite nanoparticles provide superparamagnetic properties for external control.

Purpose of the Study:

  • To prepare superparamagnetic composites by CaCO3 mineralization using magnetite nanoparticles and cross-linked polymer beads.
  • To investigate the influence of different preparation orders on composite properties.
  • To evaluate the sorption capacity of the prepared composites for Cu(II) ions.

Main Methods:

  • CaCO3 mineralization in the presence of oleic acid-stabilized magnetite nanoparticles and polymer templates (cation ion exchanger and amphoteric ion exchanger).
  • Characterization using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Energy Dispersive X-ray (EDX), X-ray Photoelectron Spectroscopy (XPS), and Transmission Electron Microscopy (TEM).
  • Sorption experiments to determine Cu(II) ion uptake capacity.

Main Results:

  • Successful preparation of superparamagnetic CaCO3-polymer composites incorporating magnetite nanoparticles.
  • Demonstration of facile magnetic separation and extraction of the composite materials.
  • Characterization confirmed the presence of polymer, CaCO3, and magnetite, with analysis of morphology, polymorphs, and thermal stability.
  • Evaluation of sorption capacity for Cu(II) ions, with comparisons to non-magnetic samples.

Conclusions:

  • The developed method enables the creation of magnetically separable superparamagnetic composites.
  • These composites show potential for applications requiring efficient separation and ion sorption, such as in water treatment.
  • The integration of magnetite nanoparticles significantly enhances the material's utility for magnetic manipulation.