MoO3

Molybdenum trioxide (MoO3) is a transition metal oxide semiconductor with a layered crystal structure that makes it amenable to exfoliation into thin films and 2D nanomaterials. It is employed in catalysis, electrochemistry, and optoelectronics—particularly in gas sensors, photocatalytic applications, lithium-ion battery cathodes, and as a catalyst support in petrochemical refining. Engineers select MoO3 for applications requiring combined oxidation catalysis and semiconductor behavior, or where its two-dimensional forms can improve surface area and charge transport compared to bulk alternatives.