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- W2465461534 abstract "Abstract The degradations of aqueous solutions of 2-phenyl-5-sulfobenzimidazole acid (PBSA) using peroxymonosulfate (PMS) activated with LaCoO3 (LCO)-based perovskite oxides prepared by three different methods (including normal precipitate method named as LCO, introduction of cetyltrimethyl ammonium bromide (CTAB) named as LCO-CTAB and hydrothermal method with the adding of silicon named as LCO-SiO2) were investigated. The results showed that all the catalysts effectively degraded PBSA. At neutral pH, a removal efficiency of about 100% was achieved in less than 10 min. LCO-SiO2 showed the widest solution pH range (4.0–8.0) with a lowest leaching of cobalt and lanthanum ions (both less than 5.0%). The surface and structural properties of the catalysts were determined using X-ray diffraction, N2 adsorption–desorption, transmission electron microscopy, and X-ray photoelectron spectroscopy. The reaction involved LCO and LCO-CTAB was a combination reaction including homogeneous and heterogeneous reactions. The first one was caused by the leached cobalt ions; the later one was derived by the surface cobalt-oxygen bond. In the process of LCO-SiO2 activated PMS, the heterogeneous activation reaction dominated PBSA degradation, which was derived by SO4 − and electronic transfer confirmed by the effect of radical quenchers and intermediates identification. Eight intermediates generated from PBSA degradation were identified using gas chromatography–mass spectrometry. The identification of HO3SO− among the products confirmed the proposed SO4 − degradation mechanism." @default.
- W2465461534 created "2016-07-22" @default.
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- W2465461534 date "2016-11-01" @default.
- W2465461534 modified "2023-10-10" @default.
- W2465461534 title "LaCoO3 perovskite oxide activation of peroxymonosulfate for aqueous 2-phenyl-5-sulfobenzimidazole degradation: Effect of synthetic method and the reaction mechanism" @default.
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- W2465461534 doi "https://doi.org/10.1016/j.cej.2016.07.027" @default.
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