Recent progress in the electrochemical detection of environmental pollutants using MOFs and COFs.

Abstract

Covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) exhibit advantages such as high specific surface areas and abundant surface functional groups, which make them suitable as substrate materials for electrochemical detection sensors (ECSs). There has been a multitude of research studies and advancements in the field of COF-/MOF-based ECSs, so it is necessary to revisit and summarize the existing work to present a clear and concise overview of the research to readers. Therefore, this review summarizes the recent research progress of COFs and MOFs in electrochemical detection. It focuses on two main aspects: methods for enhancing the performance of COF-/MOF-based ECSs (such as improving the capture capacity of COF-/MOF-based ECSs for the analyte and the charge-transfer capability between COF-/MOF-based ECSs and the analyte) and the application of ECSs to detect various pollutants (such as organic toxins, biomarkers, and various heavy metal ions). Finally, the future development trends of COF-/MOF-based ECSs are discussed and analyzed.

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