Editorial Feature

Copper Oxide (CuO) Nanoparticles - Properties, Applications

Nanoparticles research is gaining increasing interest due to their unique properties, such as increased electrical conductivity, toughness and ductility, increased hardness and strength of metals and alloys, luminescent efficiency of semiconductors, formability of ceramics.

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

Copper oxide nanoparticles appear as a brownish-black powder. They can be reduced to metallic copper when exposed to hydrogen or carbon monoxide under high temperature. They are graded harmful to humans and as dangerous for the environment with adverse effect on aquatic life.

Chemical Properties

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

Chemical Data
Chemical symbol CuO
CAS No. 1317-38-0
Group Copper 11
Oxygen 16
Electronic configuration Copper [Ar] 3d10 4s1
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Copper 79.87
Oxygen 20.10

Physical Properties

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

Properties Metric Imperial
Density 6.31 g/cm3 0.227 lb/in3
Molar mass 79.55 g/mol -

Thermal Properties

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

Properties Metric Imperial
Melting point 1201°C 2194°F
Boiling point 2000°C 3632°F

Manufacturing Process

Copper oxide nanoparticles can be synthesized using the aqueous precipitation method. In this method, copper acetate is used as a precursor and sodium hydroxide as a stabilizing agent.

Single phase monoclinic structure of the copper oxide nanoparticles is revealed using X-ray diffraction. The rectangular morphology of the copper oxide nanoparticles is revealed using the scanning electron microscopy.


The key applications of copper oxide nanoparticles are as follows:

  • As burning rate catalyst in rocket propellant. It can greatly improve the homogeneous propellant burning rate, lower pressure index, and also perform better as a catalyst for the AP composite propellant
  • Can be applied to the catalyst, superconducting materials, thermoelectric materials, sensing materials, glass, ceramics and other fields
  • As ceramic resistors, magnetic storage media, gas sensors, near-infrared tilters, photoconductive and photothermal applications
  • As semiconductors, solar energy transformation, and high-tech superconductors.

Source: AZoNano

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