Nanostructured aerosols containing magnetite and α-iron for low-temperature ozone decomposition

Abstract

The samples of fraction nanostructured compositions containing magnetite (Fe₃O₄) and α-iron (α-Fe), obtained by welding of steel using a bare welding wire of Sv08G2S (ER70S-6) type in CO₂ as a shielding gas, were characterized by X-ray phase and FT-IR spectroscopy, water vapor adsorption, and pH-metry and also were tested in the reaction of ozone decomposition at the initial ozone concentration, $C_{O_3}^{\mathit{in}},$ of 1.0 mg/m³. From the experimental data, it has been found that magnetite phase is responsible for the activity of the two-component, Fe₃O₄ + α-Fe, composition in the reaction of ozone decomposition.

Keywords:

• welding aerosol
• nanostructured solid component
• characterization
• ozone decomposition

Competing Interests

The authors declare that they have no competing interests.

Additional information

Funding

The study was carried out with the support of the Ministry of Education and Science of Ukraine.