Building Feedback-Regulation System Through Atomic Design for Highly Active SO₂ Sensing.

ABSTRACT: Reasonably constructing an atomic interface is pronouncedly essential for surface-related gas-sensing reaction. Herein, we present an ingenious feedback-regulation system by changing the interactional mode between single Pt atoms and adjacent S species for high-efficiency SO₂ sensing. We found that the single Pt sites on the MoS₂ surface can induce easier volatilization of adjacent S species to activate the whole inert S plane. Reversely, the activated S species can provide a feedback role in tailoring the antibonding-orbital electronic occupancy state of Pt atoms, thus creating a combined system involving S vacancy-assisted single Pt sites (Pt-Vs) to synergistically improve the adsorption ability of SO₂ gas molecules. Furthermore, in situ Raman, ex situ X-

SUBMITTER: Jia X 

PROVIDER: S-EPMC10899126 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature