Abstract
Metal–organic-frameworks (MOFs) are emerging materials used in the environmental electrochemistry community for Faradaic and non-Faradaic water remediation technologies. It has been concluded that MOF-based materials show improvement in performance compared to traditional (non-)faradaic materials. In particular, this review outlines MOF synthesis and their application in the fields of electron- and photoelectron-Fenton degradation reactions, photoelectrocatalytic degradations, and capacitive deionization physical separations. This work overviews the main electrode materials used for the different environmental remediation processes, discusses the main performance enhancements achieved via the utilization of MOFs compared to traditional materials, and provides perspective and insights for the further development of the utilization of MOF-derived materials in electrified water treatment.
Highlights
Access to clean water is identified by the United Nations as one of the major sustainable challenges of this century [1]
The decentralization of water purification is a promising approach that can ensure access to high quality water by final users connected to the grid and those relying on alternative water supplies such as wells
conduction band (CB)−-and the hVB+ are commonly referred to as charge carriers, since they are responsible for semiconductor conductance [89]
Summary
Access to clean water is identified by the United Nations as one of the major sustainable challenges of this century [1]. The electrification of water technologies can provide a holistic solution to the challenges of access to clean water and sanitation worldwide. Electrochemical technologies are emerging as a promising solution given their versatility and efficient removal of organic pollutants, oxyanions, scalants, and even pathogens from water. Challenges related to effective and selective electrode materials still exist [2] In this context, metal–organic-frameworks (MOFs) are defining a new scientific pathway to overcome such barriers. MOFs are used to connect with electrochemical applications based on electrocatalysis, photoelectrocatalysis, and non-faradaic processes. Advances on these different remediation technologies by the use of MOFs are presented from a critical perspective that identifies urgent research questions to enhance MOF-based electrodes
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