Metal–organic frameworks as powerful heterogeneous catalysts in advanced oxidation processes for wastewater treatment
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/3794
EDITED VERSION: https://www.mdpi.com/2076-3417/12/16/8240
UNESCO SUBJECT: 3308.10 Tecnología de Aguas Residuales ; 3303 Ingeniería y Tecnología Químicas ; 3308 Ingeniería y Tecnología del Medio Ambiente
DOCUMENT TYPE: article
Nowadays, the contamination of wastewater by organic persistent pollutants is a reality. These pollutants are difficult to remove from wastewater with conventional techniques; hence, it is necessary to go on the hunt for new, innovative and environmentally sustainable ones. In this context, advanced oxidation processes have attracted great attention and have developed rapidly in recent years as promising technologies. The cornerstone of advanced oxidation processes is the selection of heterogeneous catalysts. In this sense, the possibility of using metal–organic frameworks as catalysts has been opened up given their countless physical–chemical characteristics, which can overcome several disadvantages of traditional catalysts. Thus, this review provides a brief review of recent progress in the research and practical application of metal–organic frameworks to advanced oxidation processes, with a special emphasis on the potential of Fe-based metal–organic frameworks to reduce the pollutants present in wastewater or to render them harmless. To do that, the work starts with a brief overview of the different types and pathways of synthesis. Moreover, the mechanisms of the generation of radicals, as well as their action on the organic pollutants and stability, are analysed. Finally, the challenges of this technology to open up new avenues of wastewater treatment in the future are sketched out.
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