Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Abstract Metal oxide semiconductors (MOSs) have emerged as pivotal materials for gas sensing technologies due to their inherent advantages, including cost‐effectiveness, simplicity in synthesis, and easy fabrication of nanodevices. These characteristics made MOSs widely applicable industrial, environmental, biological monitoring. While offer intrinsic gas‐sensing properties, limited active site density function diversity restrict sensitivity selectivity, especially complex gaseous environments. To overcome these limitations, extensive research efforts been devoted functionalizing through strategies such heterojunction construction, noble metal nanoparticle loading (e.g., Au, Pt, Ag, Pd), heteroatom doping Si, Cr). Furthermore, composite an effective approach enhance MOSs‐based sensors by integrating carbon‐based or polymers leverage synergistic interactions. modifications expand the applicability detecting volatile organic compounds, toxic gases, flammable gases. This review systematically examines synthesis performance enhancements achieved functionalization material integration, emphasizing structure‐property relationships, interfacial charge transfer dynamics, adsorption mechanisms. Finally, challenges future directions rational design next‐generation are outlined, providing critical insights advancing intelligent technologies.

Language: Английский