The field of two-dimensional (2D) materials has seen substantial growth with emerging options such as MXenes, transition metal dichalcogenides (TMDs), black phosphorus, and 2D perovskites, showcasing significant potential across various applications. In gas sensing, these materials offer unique properties, including remarkable electrical conductivity, flexibility, and high surface area, that could potentially address the limitations faced by traditional sensor technologies. Conventional metal-oxide gas sensors often face drawbacks like high energy consumption, limited selectivity, and reduced responsiveness, while 2D materials hold promise in overcoming these limitations due to their inherent versatility. Recent studies have focused on leveraging these properties to develop next-generation sensors with faster response times, lower power usage, and the ability to be integrated into flexible, wearable devices. Despite these advancements, challenges remain. Ensuring stability, enhancing reproducibility, and achieving scalable production of 2D materials are critical issues that currently hinder wider adoption and commercialization. For instance, degradation problems in common materials like MXenes and black phosphorus can negatively impact long-term sensor performance. It's crucial to address these challenges through novel synthesis techniques, enhanced material characterization, and innovative sensor designs.

This Research Topic aims to thoroughly explore the capabilities of emerging 2D materials to redefine the landscape of gas and vapor sensing technologies. Researchers are encouraged to contribute studies that expand the understanding of 2D material integration into sensing systems, focusing on overcoming challenges related to material stability, sensor scalability, and selectivity in complex gas environments. To gather further insights in the scope of gas sensing advancements using 2D materials, we welcome articles addressing, but not limited to, the following themes:

- Synthesis and functionalization of emerging 2D materials for gas/vapor sensing.
- Exploration of 2D systems like perovskites, MXenes, TMDs, and their heterostructures.
- Advanced fabrication techniques for scalable, reproducible sensor development.
- Understanding charge transfer dynamics and surface interactions in 2D materials.
- Strategies to enhance stability, selectivity, and sensitivity in 2D-based sensors.
- Development of flexible, stretchable, and wearable sensor architectures.
- Integration of 2D sensors with CMOS, IoT, and real-time monitoring systems.
- Application of AI and ML in signal processing and gas classification.
- Applications in environmental, medical, industrial, and agricultural fields.

This topic invites original research articles, reviews, and perspective pieces on these and related areas.

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Advances in 2D Materials: Transforming Gas Sensing Technologies