Iron Oxide/ Silicon Oxide/ Aluminium Oxide Core Shell (Fe3O4/SiO2Al2O3, 99.9%, APS: 80-100nm, Metal Oxide Core)

Iron Oxide/ Silicon Oxide/ Aluminium Oxide Core-Shell Nanoparticles\

Introduction

Iron oxide/silicon oxide/aluminium oxide core-shell nanoparticles are a sophisticated class of composite nanomaterials that combine iron oxide, silicon oxide (SiO₂), and aluminium oxide (Al₂O₃) in a core-shell configuration. These nanoparticles are designed to take advantage of the unique properties of each individual material, offering a multifunctional platform with enhanced characteristics that are suitable for a broad range of applications, including biomedicine, catalysis, drug delivery, magnetic separation, and environmental remediation.

This multi-layered structure is particularly appealing due to the synergistic effects that arise from the combination of magnetic, chemical, and structural properties from the three materials. By designing the nanoparticles with a core-shell architecture, researchers can achieve controlled size distribution, high stability, and tunable surface properties, which are essential for optimizing performance in various technological and industrial applications.

Core Component: Iron Oxide (Fe₃O₄)

The iron oxide core (often magnetite, Fe₃O₄) is a key component of these nanoparticles, providing superparamagnetic properties. Superparamagnetism is a crucial feature for applications where magnetic responsiveness is required, such as in magnetic separation, MRI contrast enhancement, and drug delivery systems. The magnetic properties of Fe₃O₄ nanoparticles are governed by the presence of iron ions, which can be easily manipulated under an external magnetic field.

Some notable characteristics of the iron oxide core include:

Magnetic Properties: Fe₃O₄ particles exhibit superparamagnetism, meaning they can be magnetized in the presence of an external magnetic field but lose their magnetization once the field is removed, ensuring that they do not retain any permanent magnetic effects when not in use.

Targeted Drug Delivery: The superparamagnetic nature allows for magnetic targeting of the nanoparticles, which can be used to direct drugs, proteins, or other therapeutic agents to specific areas of the body (e.g., tumors) using an external magnetic field.

Stability: Iron oxide nanoparticles are relatively stable in aqueous solutions, but without protection, they are prone to oxidation. This is where the silicon oxide and aluminium oxide shells come into play, providing protective coatings that enhance their performance and longevity.