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

Highlights Feedback-regulation system is established between single Pt sites and MoS2 supports The Pt1-MoS2-def can expand the electron transfer path from single Pt sites to whole Pt-MoS2 supports in SO2 gas atmosphere. The Pt1-MoS2-def sensors exhibit high SO2 responses and extremely low limit of detection (3.14% to 500 ppb SO2) at room temperature. The Pt1-MoS2-def sensors array can realize real-time monitoring of SO2 for plant growth.