Skip to the main content

Croatica Chemica Acta, Vol. 96 No. 1, 2023.

Original scientific paper

https://doi.org/10.5562/cca3947

Photocatalytic UV-Induced Approach for Discoloration of Bromocresol Purple, Bromothymol Blue Dyes and Their Mixture Using Nix Fe3−xO4/Fe2O3/AC Composites

Katerina Zaharieva ; Institute of Mineralogy and Crystallography “Аcad. I. Kostov”, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 107, 1113 Sofia, Bulgaria
Maria Shipochka ; Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 11, 1113 Sofia, Bulgaria
Katya Milenova ; Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 11, 1113 Sofia, Bulgaria
Silvia Dimova orcid id orcid.org/0009-0004-4487-249X ; Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 103A, 1113 Sofia, Bulgaria
Ognian Dimitrov ; Institute of Electrochemistry and Energy Systems “Academician Evgeni Budevski”, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 10, 1113, Sofia, Bulgaria
Iliiyana Hristova ; Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 11, 1113 Sofia, Bulgaria

Full text: english pdf 8.282 Kb

page 9-20

downloads: 491

cite

Abstract

The nickel ferrite-activated carbon samples NiFe2O4/Activated carbon and NixFe3−xO4/Fe2O3/AC, x = 0.25; 0.5 obtained by co-precipitation followed by thermal treatment in inert atmosphere, were studied for discoloration of Bromocresol Purple (BCP), Bromothymol Blue (BTB) dyes and their mixture as model contaminants under UV-A light. The prepared materials were investigated by XPS, PXRD and XRF analysis, FT-IR spectroscopy, SEM, EDX, BET method and TG analysis. The photocatalyst with composition NixFe3−xO4-AC, x = 1 has demonstrated the highest photocatalytic activity towards discoloration of the BTB in comparison with the others tested materials NixFe3−xO4/Fe2O3/AC, x = 0.25; 0.5. These results can be explained with the smaller particle sizes, the mesoporous structure, the higher degree of crystallinity and higher content of hydroxyl groups. This study proved that the obtained nickel ferrite-activated carbon materials are suitable as photocatalysts for discoloration of the BTB dye. They have demonstrated also relatively high adsorption ability towards BCP dye.

Keywords

NixFe3−xO4/Fe2O3/AC; Bromocresol Purple; Bromothymol Blue; mesoporous structure

Hrčak ID:

305550

URI

https://hrcak.srce.hr/305550

Publication date:

6.7.2023.

Visits: 979 *