The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.
Oxygen Vacancy Promoted Heterogeneous Fenton-like Degradation of Ofloxacin at pH 3.2–9.0 by Cu Substituted Magnetic Fe3O4@FeOOH Nanocomposite
Abstract
To develop an ultraefficient and reusable heterogeneous Fenton-like catalyst at a wide working pH range is a great challenge for its application in practical water treatment. We report an oxygen vacancy promoted heterogeneous Fenton-like reaction mechanism and an unprecedented ofloxacin (OFX) degradation efficiency of Cu doped Fe 3 O 4 @FeOOH magnetic nanocomposite. Without the aid of external energy, OFX was always completely removed within 30 min at pH 3.2–9.0. Compared with Fe 3 O 4 @FeOOH, the pseudo-first-order reaction constant was enhanced by 10 times due to Cu substitution (9.04/h vs 0.94/h). Based on the X-ray photoelectron spectroscopy (XPS), Raman analysis, and the investigation of H 2 O 2 decomposition, • OH generation, pH effect on OFX removal and H 2 O 2 utilization efficiency, the new formed oxygen vacancy from in situ Fe substitution by Cu rather than promoted Fe 3+ /Fe 2+ cycle was responsible for the ultraefficiency of Cu doped Fe 3 O 4 @FeOOH at neutral and even alkaline pHs. Moreover, the catalyst had an excellent long-term stability and could be easily recovered by magnetic separation, which would not cause secondary pollution to treated water.
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Metadata
- Authors
- Jin, H., Tian, X., Nie, Y., Zhou, Z., Yang, C., Li, Y., & Lu, L.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-10-17
- Volume
- 51
- Issue
- 21
- Pages
- 12699-12706
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2757823858
- Cited by
- 336
- References
- 36
- FWCI
- 14.48
- Type
- journal article
- Language
- en
- Open access
- closed
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