Abstract：
:The Fenton-like activity of nanoceria has attracted intensive attention for wastewater treatment in recent years. During the Fenton-like reaction, the adsorption of organic pollutants on catalyst surface plays a key role in their degradation. In this work, the adsorption-degradation of methylene blue (MB) and Congo red (CR) in nanoceria/H2O2 system was investigated under alkaline conditions. The MB exhibited weak adsorption on nanoceria surface via electrostatic attraction, while strong Lewis acid-base interactions between CR and cerium ions was observed. Moreover, the adsorption of MB was enhanced in the presence of H2O2 by the formation of surface peroxide species, but an adsorption competition existed between H2O2 and CR. With more Ce3+, CeO2 nanorods could degrade CR efficiently as Fenton-like catalyst. But the degradation of MB catalyzed by ceria was much lower than that of CR in the presence of H2O2.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wei X,Wang Y,Feng Y,Xie X,Li X,Yang Sdoi
10.1038/s41598-018-36794-2subject
Has Abstractpub_date
2019-03-21 00:00:00pages
4964issue
1issn
2045-2322pii
10.1038/s41598-018-36794-2journal_volume
9pub_type
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