Surface And Heterointerface Engineering Of 2D Mxenes For Gas Sensing Applications

Surface and heterointerface engineering of 2D MXenes have significantly propelled their potential for gas sensing applications. This study comprehensively surveys the progress made in this domain, focusing on the intricate manipulation of surface properties and heterointerfaces to enhance gas sensing performance. Firstly, the fundamental aspects of 2D MXenes, including their structure, synthesis methods, and inherent properties, are outlined. Subsequently, the principles underlying gas sensing mechanisms with 2D MXenes are elucidated, emphasizing the critical role played by surface chemistry and heterointerfaces in modulating sensing behavior. Various strategies for surface engineering, such as chemical functionalization and morphology control, are discussed in detail, highlighting their influence on gas adsorption and detection sensitivity. Additionally, the emerging field of heterointerface engineering is explored, with a focus on the creation of tailored interfaces to optimize gas-sensing properties. Recent advancements and notable achievements in gas sensing applications of engineered 2D MXenes are critically evaluated, along with existing challenges and future prospects in this rapidly evolving research area. This study serves as a comprehensive guide for researchers and practitioners interested in leveraging surface and heterointerface engineering strategies to enhance the gas sensing capabilities of 2D MXenes.