Antimony Oxide (Sb2O3) Nanoparticles - Properties, Applications

Topics Covered

Chemical Properties
Physical Properties
Thermal Properties
Manufacturing Process


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

This article discusses about the properties and applications of antimony oxide nanoparticles. Antimony is a Block P, Period 5 element, while oxygen is a Block P, Period 2 element.

The morphology of antimony oxide nanoparticles is spherical, and they appear as a white powder. Antimony oxide nanoparticles are graded as harmful with a possibility of causing cancer.

Chemical Properties

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

Chemical Data
Chemical symbol Sb2O3
CAS No. 1309-64-4
Group Antimony 15
Oxygen 16
Electronic configuration Antimony [Kr] 4d105s2 5p3
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Antimony 83.53
Oxygen 16.45

Physical Properties

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

Properties Metric Imperial
Density 5.2 g/cm3 0.187 lb/in3
Molar mass 291.52 g/mol -

Thermal Properties

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

Properties Metric Imperial
Melting point 656 °C 1213°F
Boiling point 1425 °C 2597°F

Manufacturing Process

Antimony oxide nanoparticles can be synthesized using polyvinyl alcohol in water solution via reaction between antimony trichloride and sodium hydroxide. The nanoparticle created is 10 to 80 nm in size. High-resolution electron microscopy (HREM) and transmission electron microscopy can be used to characterize the microstructure of these nanoparticles.


The key applications of antimony oxide nanoparticles are listed below:

  • In high conductivity applications
  • As an antistatic additive and a flame retardant in coatings, nanowires, plastics, fiber and textiles
  • In some alloy and catalyst applications
  • In electrochromics or electro-optics and magnetic machines and micro-equipment due to their high conductivity

Source: AZoNano


  1. Kgotla Masibi Kgotla Masibi South Africa says:

    Can anyone assist with the synthesis of antimony oxide nano-particles.


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