1. The behavior of cerium doped phosphate tungsten bronze in Briggs-Rauscher oscillatory reaction
- Author
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Maksimović, Tijana, Joksović, Ljubinka, Maksimović, Jelena, Tančić, Pavle, Nedić, Zoran, Pagnacco, Maja, Maksimović, Tijana, Joksović, Ljubinka, Maksimović, Jelena, Tančić, Pavle, Nedić, Zoran, and Pagnacco, Maja
- Abstract
The Briggs-Rauscher (BR) reaction is an oscillating reaction in which the oxidation of malonic acid (CH2(COOH)2) in the presence of hydrogen peroxide (H2O2) and potassium iodate (KIO3) is catalyzed with a metal ion (usually Mn2+) in acidic aqueous solution. The BR reaction is very sensitive to the addition of different types of analytes. Every change in oscillatory dynamics, caused by analyte addition, can be used for the appraisal of analyte concentration, as well as its potential antiradical or catalytic activity. The cerium doped phosphate tungsten bronze (Ce-PWB) was obtained by thermal treatment and characterized by TGA, DSC, FTIR, and XRPD technics. In this work, the behavior of Ce-PWB and its influence on BR oscillatory dynamics was examined. The results revealed that an increase in the mass of added Ce-PWB has slightly shortened the oscillation time duration with the minimal change in the form of the basic BR oscillogram, suggesting the catalytic effect of this bronze in oscillatory reaction
- Published
- 2022