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Borophene, a two-dimensional allotrope of boron, has emerged as a promising material for gas sensing because of its exceptional electronic properties and high surface reactivity. This review comprehensively overviews borophene synthesis methods, properties, and sensing applications. However, it is crucial to acknowledge the substantial gap between the abundance of theoretical literature and the limited experimental studies. While theoretical investigations have elucidated the stability and remarkable sensing capabilities of various borophene polymorphs across different gases, significant experimental challenges have hindered the translation of these theoretical predictions into practical devices. Consequently, this review carefully studies these challenges and shortcomings that are jeopardizing the practical implementation of borophene in real-world settings. Specifically, four key issues are thoroughly studied, such as superficial borophene oxidation upon exposure to the air, interference from relative humidity on gas molecule detection, lack of selectivity, and synthesis scalability. Finally, novel strategies are proposed to overcome these bottlenecks. By adopting these approaches, borophene can pave the way to drive the advancement of the next generation of sensing devices.
Borophene, a two-dimensional allotrope of boron, has emerged as a promising material for gas sensing because of its exceptional electronic properties and high surface reactivity. This review comprehensively overviews borophene synthesis methods, properties, and sensing applications. However, it is crucial to acknowledge the substantial gap between the abundance of theoretical literature and the limited experimental studies. While theoretical investigations have elucidated the stability and remarkable sensing capabilities of various borophene polymorphs across different gases, significant experimental challenges have hindered the translation of these theoretical predictions into practical devices. Consequently, this review carefully studies these challenges and shortcomings that are jeopardizing the practical implementation of borophene in real-world settings. Specifically, four key issues are thoroughly studied, such as superficial borophene oxidation upon exposure to the air, interference from relative humidity on gas molecule detection, lack of selectivity, and synthesis scalability. Finally, novel strategies are proposed to overcome these bottlenecks. By adopting these approaches, borophene can pave the way to drive the advancement of the next generation of sensing devices.
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