2D Nanomaterials as (Opto)electronic Gas Sensors

Dear Colleagues,

Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides (TMDs), and MXenes, have emerged as promising platforms for gas sensing due to their unique phisicochemical properties, including optical and electronic. Their large surface area enables highly sensitive, selective, and low-power detection at room temperature, while integration with transition metal catalysts yields 2D nanohybrids with enhanced performance.

This Special Issue aims to provide a comprehensive overview of recent advances in the design and synthesis of 2D nanomaterials, device engineering, and emerging gas-sensing mechanisms for the development of next-generation gas sensors. It seeks to bridge fundamental research and practical applications, including integration into flexible, wearable, and IoT-compatible systems. It also reviews recent advances in 2D-material-based sensors, focusing on enhanced sensitivity and selectivity achieved through surface functionalization and light-assisted mechanisms.

Topics may include but not limited to the following:

• Synthesis and functionalization of 2D nanomaterials for gas sensing;
• Eco-frendly synthesis of 2D materials for sensing devices;
• Heterostructures and hybridization;
• Surface modification, doping and defect engineering, light excitation to enhance sensor performance at room temperature;
• Electronic and optoelectronic transduction mechanisms;
• Flexible, wearable, and transparent gas sensors;
• Room-temperature and low-power operation;
• Gas detection under extreme or environmental conditions;
• Theoretical and computational modeling of gas–surface interactions;
• Integration of nanomaterial-based sensors into IoT platforms;
• Emerging applications in health, safety, and environmental monitoring.

Dr. Dalal Fadil
Dr. Marta Feliz
Guest Editors

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