Editorial Feature

Iron Oxide (Fe2O3) Nanoparticles - Properties, Applications

Researchers are constantly working on new applications for nanoparticles in biological, chemical, and industrial areas. Iron oxides have a useful set of properties for biomedical imaging and catalytic applications.

This article discusses the properties and applications of iron oxide nanoparticles. Iron is a Block D, Period 4 element, while oxygen is a Block P, Period 2 element.

Iron oxide nanoparticles have diameters between about 1 and 100 nm. The two main types are magnetite and its oxidized form maghemite. Iron oxide nanoparticles are graded as an irritant and might cause skin, eye, and respiratory irritations.

Chemical Properties

The chemical properties of iron oxide nanoparticles are outlined in the following table.

Chemical Data
Chemical symbol Fe2O3
CAS No. 1309-37-1
Group Oxygen 16
Iron 8
Electronic configuration Iron [Ar] 3d6 4s2
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Iron 69.93
Oxygen 30.03

Physical Properties

The physical properties of iron oxide nanoparticles are given in the following table.

Properties Metric Imperial
Molar mass 159.69 g/mol -

Thermal Properties

The thermal properties of iron oxide nanoparticles are provided in the table below.

Properties Metric Imperial
Melting point 1566 °C 2851°F


The key applications of iron oxide nanoparticles are as follows:

  • In magnetic resonance imaging to provide enhanced contrast at very low concentrations in the nanomolar range for studying tumors
  • As a targeted delivery vehicle and as a drug delivery coating for nanoscale anti-cancer drugs
  • For magnetic data storage
  • In coatings, plastics, nanowires, nanofibers, and textiles and in specific alloy and catalyst applications

Source: AZoNano


  1. chase bair chase bair United States says:

    What other ways is rust used (majorly).

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoNano.com.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.