How does the MoSe2/TiO2 composite enhance gas sensing performance?

Label:chem

Topic
The MoSe2/TiO2 composite is designed to improve gas sensing performance by combining the properties of MoSe2 and TiO2. MoSe2 provides a large surface area and tunable electronic properties, while TiO2 contributes to stability and high sensitivity.

From: "MoSe2-based room temperature gas sensor with a sub-parts-per-billion limit for ammonia and N,N-dimethylformamide", Mater. Adv., 2025,6, 2854-2866
Answer
The MoSe2/TiO2 composite enhances gas sensing performance through its synergistic interaction, which increases the specific surface area, introduces defects and oxygen vacancies, and modulates the electronic properties. This results in improved sensitivity and selectivity towards NH3 and DMF.
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