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Cu-doped Bi2O3/Bi0 composite as an efficient Fenton-like catalyst for degradation of 2-chlorophenol.
- Source :
-
Separation & Purification Technology . Jan2016, Vol. 157, p203-208. 6p. - Publication Year :
- 2016
-
Abstract
- Cu-doped BiO x composites were prepared with and without citric acid. In the presence of citric acid, Bi 0 and Cu 2+ /Cu + were confirmed to coexist in the composite (BiCu9/Bi 0 ) by X-ray diffraction and X-ray photoelectron spectroscopy. The catalyst showed high Fenton activity and stability for the degradation and mineralization of 2-chlorophenol in the pH range of 6–8. H 2 O 2 was predominately converted into OH radicals in BiCu9/Bi 0 suspension, as assessed by the electron spin resonance technique. In the composite, Bi 0 inhibited the oxidation of H 2 O 2 by Cu 2+ into O 2 and OH by reducing Cu 2+ , enhancing the reaction of H 2 O 2 with Cu + to produce OH. Intermediate determination showed that 2-chlorophenol was decomposed mainly by OH radicals into hydroxylation products, subsequently decomposed into short-chain organic acids, and eventually decomposed into CO 2 and H 2 O. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13835866
- Volume :
- 157
- Database :
- Academic Search Index
- Journal :
- Separation & Purification Technology
- Publication Type :
- Academic Journal
- Accession number :
- 111824191
- Full Text :
- https://doi.org/10.1016/j.seppur.2015.11.021