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Updated: Jan 14, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Transition metal oxide electrode materials in electrochemical sensors for heavy metal ions: cutting-edge developments
1School of Chemistry and Environmental Engineering, Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety, Hubei Provincial Engineering Technology Research Center of Green Chemical Equipment, Wuhan Institute of Technology, Wuhan 430074, PR China.
Abstract:
Transition metal oxides (TMOs) are widely used in the field of electrochemical sensors due to their excellent electrical conductivity, high specific surface area, good catalytic activity, and tunable metal valence, especially exhibiting significant potential in the detection of heavy metal ions (HMIs). The present review focuses on the current research status of common TMOs, including iron oxide, zinc oxide, manganese oxide, and cobalt oxide, for electrochemical detection of HMIs, and systematically discusses various strategies to improve the performance of electrochemical detection of HMIs. Meanwhile, the challenges and bottlenecks facing the present research status (e.g., limitation of pH range, poor stability, and the influence of the presence of interfering ions, etc.) provide an outlook on the limitations faced by current TMOs, like developing multifunctional composites, optimizing nanostructures, promoting the intelligent portability of devices and constructing green sensors. The review provides an essential reference for the development of high-performance electrochemical sensors suitable for real-time environmental monitoring. We anticipate that this mini-review will contribute to the future development of TMOs-modified electrode materials and open the door to the rational design and development of high-performance electrochemical sensors.
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