Enhanced reactivity of the CuO-Fe2O3 intimate heterojunction for the oxidation of quinoline yellow dye (E104)

Autor: Djedjiga Bousalah, Hanane Zazoua, Amel Boudjemaa, Abdelbaki Benmounah, Mohamed Zine Messaoud-Boureghda, Khaldoun Bacharı
Rok vydání: 2022
Předmět:
Zdroj: Environmental Science and Pollution Research. 29:69988-69999
ISSN: 1614-7499
0944-1344
DOI: 10.1007/s11356-022-20453-1
Popis: This research work was designed to study the elimination of quinoline yellow (QY) in aqueous solutions by the heterogeneous Fenton and photo-Fenton processes in the presence of CuO/Fe2O3 photocatalyst. CuO/Fe2O3 derived from LDH structure was synthesized by the co-precipitation method. The physiochemical characteristics of CuO/Fe2O3 are des cribed by XRD, TEM/SEM, BET surface area, FTIR and pHPZC.The effects of pH, H2O2 concentration, dye concentration, catalyst dose, reaction temperature, and reusability of catalyst on the QY decolorization efficiency were studied. The results indicated that a complete removal of QY was achieved within 150 min when the H2O2 and QY concentrations were 27.6 mM and 100 mg/L, respectively. The rate constants for QY removal by the heterogeneous Fenton system were calculated and the experimental data were found to fit the pseudo-first order model. Under optimal conditions, the rate constants were respectively 0.02032 and 0.02016 min-1 for the photo-Fenton and Fenton systems, this means that the addition of light has no significant effect.
Databáze: OpenAIRE
Externí odkaz: