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Ce3+ self-doped CeOx/FeOCl: an efficient Fenton catalyst for phenol degradation under mild conditions

Abstract

A novel Ce3+ self-doped CeOx/FeOCl composite has been successfully prepared by a facile method for the first time, which shows remarkable catalytic activity in degradation of phenol as a Fenton catalyst under neutral solution, room temperature and nature light. The 5.23% CeOx of CeOx/FeOCl is the optimal condition and the degradation constant (k) of CeOx/FeOCl is a factor of 10.8 times greater than that of FeOCl. The CeOCl in the composite plays a more important role than CeO2, which greatly increases the production of ·OH radicals. Furthermore, the Ce doping in FeOCl accelerates the separation efficiency of the photogenerated electron hole pair. The increased surface area and surface potential of CeOx/FeOCl than FeOCl effectively promote the adsorption amount of phenol, which is 4.05 times higher than that of FeOCl. According to the DFT calculations, the Ce doping in FeOCl enhances the structure stability by increasing the strength of the chemical bond. The adsorption of H2O2 with Ce3+ is energetically favorable, which promotes the production of ·OH radicals. A synergistic mechanism for CeOx/FeOCl is proposed for the enhanced catalytic performance.

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Publication details

The article was received on 25 Oct 2018, accepted on 11 Feb 2019 and first published on 11 Feb 2019


Article type: Paper
DOI: 10.1039/C8DT04269A
Citation: Dalton Trans., 2019, Accepted Manuscript

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    Ce3+ self-doped CeOx/FeOCl: an efficient Fenton catalyst for phenol degradation under mild conditions

    J. Zhang, M. Yang, Y. Lian, M. Zhong, J. Sha, G. Liu, X. Zhao and S. Liu, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C8DT04269A

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