Metal–Organic Frameworks for Electrocatalytic Sensing of Hydrogen Peroxide

Abstract

The electrochemical detection of hydrogen peroxide (H2O2) has become more and more important in industrial production, daily life, biological process, green energy chemistry, and other fields (especially for the detection of low concentration of H2O2). Metal organic frameworks (MOFs) are promising candidates to replace the established H2O2 sensors based on precious metals or enzymes. This review summarizes recent advances in MOF-based H2O2 electrochemical sensors, including conductive MOFs, MOFs with chemical modifications, MOFs-composites, and MOF derivatives. Finally, the challenges and prospects for the optimization and design of H2O2 electrochemical sensors with ultra-low detection limit and long-life are presented.

A siderophore-inspired two-dimensional Fe–hydroxamate metal–organic framework

“…As pointed out in recent review articles, non-enzymatic electrochemical detection of H 2 O 2 has drawn increasing research attention for applications in industrial, environmental and healthcare scenarios. [34][35][36] Therefore, as detailed in the ESI † (section 4), the experiments were performed on an electrochemical workstation with a three-electrode system: working electrode is SUM-31/glassy carbon (SUM-31/GCE); reference electrode is a saturated calomel electrode (SCE); counter electrode is a 1 cm 2 Pt foil; electrolyte is 0.1 M K 2 HPO 4 with pH adjusted to 10.25 by KOH. We note that for the electrochemical experiments, miniaturized SUM-31 crystals were used, from a modified synthetic method as described in the ESI † (section 2.2 and Fig.…”

Green synthesis and characterization of Ag nanoparticles in a phytic acid/ascorbic acid/sodium hydroxide system and their application in the electrochemical detection of H2O2

“…Trace amounts of H 2 O 2 will not only lead to apoptosis of melanocytes, causing vitiligo, but also cause swelling and rupture of mitochondria, which can lead to various diseases such as Parkinson's. 4 Therefore, it is important to establish a rapid and accurate detection method for trace H 2 O 2 in water. At present, sensors based on colorimetric, fluorescence, chemiluminescence, electrochemical and other analytical techniques have been widely studied and applied for H 2 O 2 detection.…”

Advancing biomedical applications of polyoxometalate-based metal–organic frameworks: from design to therapeutic potential

“…In summary, the unique properties (regulatability, stability, and multifunctionality) of POMOF materials warrant continued scrutiny and exploration within the realm of biomedical research, accentuating their potential for transformative advancements in drug delivery and medical therapies. 20 Table 1 demonstrates the biomedical applications of POMOF materials. Fig.…”