Cobalt nanoparticles are magnetic semiconductors that become cobalt metal when exposed to a temperature of 900 ° C.
The small size and high contact surface of the nanoparticles cause their electrocatalytic behavior. These nanoparticles can participate in redox reactions that result in low voltage surges at low potentials and high current intensities. Metal oxide nanoparticles are among those that have this capability. This feature has made metal oxide nanoparticles widely used in the manufacture of sensors.
Indications for cobalt oxide nanoparticles
Because of their special properties, cobalt oxide nanoparticles have attracted the attention of many biomedical industries. Here are some of cobalt nanoparticles uses:
- As catalysts and catalyst carriers
- As the active ingredient of the electrode
- Electrochromic devices
- Optical Devices
- Energy storage devices
- Gas and thermal sensors
- Diagnosis of cancer, gene therapy and drug delivery
Cobalt nanoparticles for biomedical applications
Magnetic nanoparticles are highly regarded for drug delivery in practical applications. These biocompatible nanoparticles that are capable of moving toward a magnet are being studied as drug delivery agents. Cell tracking with MRI-visible magnetic nanoparticles offers a new way of experimentally observing cellular therapies. However, not all of these particles need to be filled at the same dose. In fact, finding suitable nanoparticles for specific applications can reveal the potential of these nanocarriers.
cobalt nanoparticles synthesis from plant extract is in continue. The tendency to produce and use nanometer-sized materials is increasing day by day due to the interesting industrial properties of these materials, but nanoparticles derived from the chemical methods used today due to the use of hazardous and toxic chemicals and The environmental damage caused by them has raised a great deal of concern. Among the nanoparticles, gold and silver nanoparticles have received more attention for biomedical and medical applications, but the chemical methods of preparation of these nanoparticles lead to some toxic reactants remaining and no use of the resulting nanoparticles in biological applications. . Production of nanoparticles using the principles of green chemistry has gained prominence in research, and various types of biological systems are used for this purpose. Microprocessors, diatoms, and optical eukaryotes are among these systems, but are less commonly used because of their high cost to produce and maintain them. Nowadays, plants and crops as renewable and inexpensive sources of biomaterials have received special attention. In this paper nanoparticle synthesis using plants as a green synthesis method is investigated.
How are coblat nanoparticles made?
Types of cobalt oxide nanoparticles
Cobalt oxides are available in three types of CoO, Co2O3, Co3O4, of which CoO, Co3O4 are two important types that have special structural properties and properties. CoO is converted to Co3O4 at 600-700 ° C.
Properties of cobalt oxide nanoparticles
Cobalt oxide nanoparticles readily absorb moisture when exposed to air but do not produce aqueous compounds and are soluble in nitric acid. These nanoparticles are harmful to humans and the environment and are highly toxic and act as a skin irritant.
Methods of producing cobalt oxide nanoparticles
Cobalt oxide nanoparticles are often used in sol-gel and thermal decomposition methods.
Cobalt nanoparticles prepared by three different methods
Thermal decomposition (Thermolysis) is one of the methods of green synthesis of cobalt oxide nanoparticles. In this method, a metal-organic precursor, which is an organic-inorganic hybrid, typically undergoes irreversible chemical degradation under certain thermal conditions. Due to the conditions applied to the reaction medium, the production of the product can be controlled in the nanoscale range and the desired nanoparticles are synthesized. The use of polymers, surfactants, coating agents and stabilizers is different. This method has been used extensively in the preparation of magnetic metal oxide nanoparticles (such as magnetic iron oxide).
Where to find & buy cobalt nanoparticles?
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