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Iron Oxychloride (FeOCl): An Efficient Fenton-Like Catalyst for Producing Hydroxyl Radicals in Degradation of Organic Contaminants

Author:
Yang, Xue-jing, Xu, Xi-meng, Xu, Jing, Han, Yi-fan
Source:
Journal of the American Chemical Society 2013 v.135 no.43 pp. 16058-16061
ISSN:
1520-5126
Subject:
X-ray diffraction, aqueous solutions, catalysts, hydrogen peroxide, hydroxyl radicals, iron, organic compounds, soil remediation, transmission electron microscopy, wastewater treatment
Abstract:
An iron oxychloride (FeOCl) catalyst was developed for oxidative degradation of persistent organic compounds in aqueous solutions. Exceptionally high activity for the production of hydroxyl radical (OH·) by H₂O₂ decomposition was achieved, being 2–4 orders of magnitudes greater than that over other Fe-based heterogeneous catalysts. The relationship of catalyst structure and performance has been established by using multitechniques, such as XRD, HRTEM, and EPR. The unique structural configuration of iron atoms and the reducible electronic properties of FeOCl are responsible for the excellent activity. This study paves the way toward the rational design of relevant catalysts for applications, such as wastewater treatment, soil remediation, and other emerging environmental problems.
Agid:
5389856