Nanocomposite-Enabled Electrochemical Sensors: From Material Design to Energy, Environmental, Biomedical, and Food Applications

Electrochemical sensors leveraging nanocomposites have revolutionized detection capabilities across a broad spectrum of critical fields, including energy systems, environmental surveillance, biomedical diagnostics, and food safety. The rational design and integration of advanced nanocomposites—such as magnetic nanomaterials, noble metal nanoparticles, metal oxides, carbon-based nanostructures, conductive polymers, metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and MXenes—serve as the cornerstone for enhancing sensor performance. These materials function as efficient electrode modifiers, signal amplifiers, and recognition element carriers, offering exceptional electron transfer kinetics, high surface area, tunable catalytic activity, and unique magnetic or structural properties. Such features enable highly sensitive, selective, and stable detection of diverse analytes—from gases and ions in energy devices to biomarkers, pollutants, and pathogens in complex matrices.Despite remarkable progress, key challenges persist in optimizing nanocomposite-electrode interfaces, achieving reagent-free operation, strengthening anti-interference capacity, ensuring long-term stability under practical conditions, and facilitating the translation of lab-scale prototypes into field-deployable or point-of-care devices.This Research Topic aims to highlight cutting-edge advances in nanocomposite-driven electrochemical sensing, spanning innovative material synthesis, interface engineering, mechanistic studies, and demonstrations in real-world settings. We seek contributions that bridge fundamental nanomaterial science with applied sensor development, emphasizing strategies that enhance performance, simplify fabrication, and validate functionality in real-sample environments.We welcome high-quality Original Research, Reviews, and Mini-Reviews on topics including, but not limited to:• Design and synthesis of functional nanocomposites (e.g., hybrid nanostructures, MOF/COF composites, 2D material hybrids) for signal amplification and electrode modification.• Label-free and reagent-free electrochemical sensing platforms utilizing nanocomposites.• Magnetic nanocomposite-assisted assembly and sensing strategies.• Surface and interface engineering to improve selectivity, stability, biocompatibility, and anti-fouling properties.• Mechanistic investigations into catalytic enhancement, recognition events, and charge transfer in multi-component nanocomposites.• Applications in:Energy: monitoring of battery health, gas sensing in fuel cells, electrolyte analysis, corrosion detection.Environment: detection of pollutants, heavy metals, pesticides, and emerging contaminants in water, air, and soil.Biomedical: diagnosis via biomarker detection (e.g., cancer markers, nucleic acids, hormones), pathogen sensing, wearable health monitoring.Food Safety: analysis of toxins, additives, allergens, and freshness indicators.• Real-sample validation, sensor integration, and translational studies toward portable, on-site, or point-of-care devices. Topic editors: Hongyuan Zhao, Yixi Xie, Sridhar Komarneni Source: https://www.frontiersin.org/research-topics/80403/nanocomposite-enabled-electrochemical-sensors-from-material-design-to-energy-environmental-biomedical-and-food-applications