Degradation of tetrabromobisphenol A through peroxymonaosulfate oxidation activated by La0.5Sr0.5CoxMn1-xO3-δ perovskite

Degradation of tetrabromobisphenol A through peroxymonaosulfate oxidation activated by La0.5Sr0.5CoxMn1-xO3-δ perovskite

La 0.5 Sr 0.5 Co x Mn 1−x O 3−δ (LSCM) perovskite composite oxides prepared by co-doping of Co and Mn in B site-activated peroxymonosulfate (PMS) to degrade tetrabromobisphenol A. The characterization results indicated that the LSCM with x =0.3-0.8 have hexagonal R-3c structure. The activation effec...

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Veröffentlicht in:Environmental science and pollution research international 2021-12, Vol.28 (46), p.65814-65821
Hauptverfasser: Mao, Weida, Fan, Yan, Hu, Xiang
Format: Artikel
Sprache:eng
Schlagworte:
Acidity
Aquatic Pollution
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Catalysts
Catalytic activity
Cobalt
Crystal structure
Doping
Earth and Environmental Science
Ecotoxicology
Electron paramagnetic resonance
Electron spin
Electron spin resonance
Environment
Environmental Chemistry
Environmental Health
Environmental science
Fourier transforms
Free radicals
Oxidation
Perovskites
Pollutants
Research Article
Spectrum analysis
Spin resonance
Tetrabromobisphenol A
Waste Water Technology
Water Management
Water Pollution Control
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Zusammenfassung:La 0.5 Sr 0.5 Co x Mn 1−x O 3−δ (LSCM) perovskite composite oxides prepared by co-doping of Co and Mn in B site-activated peroxymonosulfate (PMS) to degrade tetrabromobisphenol A. The characterization results indicated that the LSCM with x =0.3-0.8 have hexagonal R-3c structure. The activation effect of LSCM on PMS decreased gradually with the increase of Mn doping, among which LSCM82 ( x =0.8) had good oxygen desorption performance certificated by O 2 -TPD and lower relative acidity (1.975). Moreover, the redox pairs of Co/Mn multi-valence ions were the main contributor to its catalytic activity. The electron spin resonance results suggested that SO 4 •− and •OH existed in the system and SO 4 •− is the main free radical. Therefore, LSCM82 perovskite catalyst has broad application prospects in aqueous solutions.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-021-15510-0