Molybdenum dichalcogenides for environmental chemical sensing

2D transition metal dichalcogenides are attracting a strong interest following the popularity
of graphene and other carbon-based materials. In the field of chemical sensors, they offer some
interesting features that could potentially overcome the limitation of graphene and metal oxides,
such as the possibility of operating at room temperature. Molybdenum-based dichalcogenides in
particular are among the most studied materials, thanks to their facile preparation techniques and
promising performances. The present review summarizes the advances in the exploitation of these
MoX2 materials as chemical sensors for the detection of typical environmental pollutants, such as
NO2, NH3, CO and volatile organic compounds.