Associating Physical and Photocatalytic Properties of Recyclable and Reusable Blast Furnace Dust Waste.

ABSTRACT: Blast furnace dust waste (BFDW) proved efficient as a photocatalyst for the decolorization of methylene blue (MB) dye in water. Structural analysis unequivocally identified α-Fe₂O₃ as the predominant phase, constituting approximately 92%, with a porous surface showcasing unique 10-30 nm agglomerated nanoparticles. Chemical and thermal analyses indicated surface-bound water and carbonate molecules, with the main phase's thermal stability up to 900 °C. Electrical conductivity analysis revealed charge transfer resistance values of 616.4 Ω and electrode resistance of 47.8 Ω. The Mott-Schottky analysis identified α-Fe₂O₃ as an n-type semiconductor with a flat band potential of 0.181 V vs. Ag/AgCl and a donor density of 1.45 × 10¹⁵ cm^-3

SUBMITTER: Chaves NO 

PROVIDER: S-EPMC10889973 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature