MOF-modified electrodes applied as electrochemical sensors for voltammetric determinations

Abstract

This review highlights the significant potential of MOFs as modifiers for electrodes, showcasing improved electrode capabilities in the determination of inorganic and organic analytes through voltammetric techniques. The enhanced performance of MOF-modified electrodes is primarily attributed to the inherent properties of MOFs, such as substantial surface area, pore size, analyte adsorption capacity, and their role in stabilizing electrocatalytic centers. The chemical and thermal stability of MOFs during electrode production and application significantly contributes to the improvement of their performance. To realize optimal performance, future investigations are crucial, emphasizing MOFs with proven chemical and thermal stability under analysis conditions, coupled with efficient adsorption capacities for diverse analytes. The synthesis of novel MOFs using functionalized polytopic organic ligands with a superior affinity for specific analytes is also recommended. Anticipating rapid evolution in research on MOF-modified electrodes, interdisciplinary collaboration is essential. Researchers from diverse scientific areas are expected to recognize the attractiveness of this research field for developing new tools for trace analyses, biological molecules, and pesticides. The collaborative development of MOF-modified electrodes necessitates cooperation between inorganic chemists and analytical chemists experienced in electroanalysis, as the optimization process demands a combination of synthesis and analytical expertise. Furthermore, their application in trace elements monitoring, molecules of biological interest, and pesticide detection is discussed. The opportunities and challenges for advanced MOF-modified electrodes are proposed at the end of this review.