Cerium Oxide (CeO2) Nanoparticles - Properties, Applications

Topics Covered

Chemical Properties
Physical Properties
Thermal Properties
Manufacturing Process


Nanoparticles research is advancing at a fast pace due to their unique properties, such as having increased electrical conductivity, toughness and ductility, increased hardness and strength of metals and alloys, luminescent efficiency of semiconductors, and formability of ceramics.

This article discusses the properties and applications of cerium oxide nanoparticles. Cerium is a Block F, Period 6 element, while oxygen is a Block P, Period 2 element.

Cerium is found in the minerals such as synchysite, bastnasite, hydroxylbastnasite, allanite, rhabdophane, monazite, and zircon. Cerium oxide is an oxide of the rare earth metal cerium. Cerium oxide nanoparticles appear in a brown to yellow powder form. They are graded as harmful.

Chemical Properties

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

Chemical Data
Chemical symbol CeO2
CAS No. 1306-38-3
Group Cerium 3
Oxygen 16
Electronic configuration Cerium [Xe] 4f2 6s2
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Cerium 81.40
Oxygen 18.58

Physical Properties

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

Properties Metric Imperial
Density 7.65 g/cm3 0.276 lb/in3
Molar mass 172.12 g/mol -

Thermal Properties

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

Properties Metric Imperial
Melting point 2400 °C 4350 °F
Boiling point 3500° C 6332° F

Manufacturing Process

Cerium oxide nanoparticles can be synthesized using the precipitation method with cerium nitrate as raw material and ammonium acid carbonate as precipitation agent.


The key applications of cerium oxide nanoparticles are as follows:

  • Catalysts and catalyst support
  • Coatings for infrared filters
  • Buffer layer for superconductors
  • Coloring agents for plastics
  • Infrared absorbents and sintering additives
  • Oxidation resistant coatings, oxygen pumps and oxygen sensors
  • Heat resistant alloy coatings
  • Electrolyte and/or electrode materials for solid oxide fuel cells
  • Polishing media for electronic devices, glasses, and bearing balls
  • UV absorbent (absorption at ~ 400 nm is the strongest for any oxide)

Source: AZoNano

Date Added: Apr 17, 2013 | Updated: Jul 11, 2013
  1. t.thangam raja t.thangam raja India says:

    it is suitable for glass ceramic polishing

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