Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 372, Issue -, Pages 3-16Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2017.09.043
Keywords
Adsorption; Photocatalysis; Pollutants; Dyes; Reactive oxygen species; Advanced oxidation
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This paper presents a review on the environmental applications of metal-organic frameworks (MOFs), which are inorganic-organic hybrid highly porous crystalline materials, prepared from metal ion/clusters and multidentate organic ligands. The emphases are made on the enhancement of the performance of advanced oxidation processes (AOPs) (photocatalysis, Fenton reaction methods, and sulfate radical (SO4(center dot-))-mediated oxidations) using MOFs materials. MOFs act as adsorption and light absorbers, leading to superior performance of photocatalytic processes. More recent examples of photocatalytic degradation of dyes are presented. Additionally, it is commonly shown that Fe-based MOFs exhibited excellent catalytic performance on the Fenton-based and SO4(center dot-)-mediated oxidations of organic pollutants (e.g., dyes, phenol and pharmaceuticals). The significantly enhanced generation of reactive species such as (OH)-O-center dot and/or SO4(center dot-) by both homogeneous and heterogeneous catalysis was proposed as the possible mechanism for water depollution. Based on the existing literature, the challenge and future perspectives in MOF-based AOPs are addressed. (C) 2017 Elsevier B.V. All rights reserved.
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