Editorial Feature

Bismuth Oxide (Bi2O3) Nanoparticles - Properties, Applications

The potential for nanoparticles in biological, chemical, and industrial areas is infinite. Researchers are working on new applications of nanoparticles constantly.

This article discusses the properties and applications of bismuth oxide nanoparticles. Bismuth has a high electrical resistance, and has the highest increase in electrical resistance when placed in a magnetic field. Bismuth is a Block P, Period 6 element, while oxygen is a Block P, Period 2 element.

Bismuth oxide nanoparticles appear as yellow powder, and are graded as an irritant and might cause skin, eye, and respiratory irritations.

Chemical Properties

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

Chemical Data
Chemical symbol Bi2O3
CAS No. 1304-76-3
Group Bismuth 15
Oxygen 16
Electronic configuration Bismuth [Xe] 4f145d10 6s2 6p3
Oxygen [He] 2s2 2p4
Chemical Composition
Element Content (%)
Bismuth 89.69
Oxygen 10.29

Physical Properties

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

Properties Metric Imperial
Density 8.9 g/cm3 0.321 lb/in3
Molar mass 465.96 g/mol -

Thermal Properties

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

Properties Metric Imperial
Melting point 817° C 1503° F
Boiling point 1890 °C 3434 °F

Manufacturing Process

Bismuth oxide nanoparticles can be manufactured using a simple gel to crystal conversion route at 80–100°C under refluxing conditions. The formation of Bi2O3 nanocrystallites can be confirmed using X-ray diffraction (XRD).


The main applications of bismuth oxide nanoparticles are electrochemical applications, such as in the electrolyte or cathode of solid oxide fuel cells (SOFC), in bio-medical and cancer imaging and for other photoconductive characteristics in thin films.

Source: AZoNano

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