Building Feedback-Regulation System Through Atomic Design for Highly Active SO_(2)Sensing  

作　　者：Xin Jia Panzhe Qiao Xiaowu Wang Muyu Yan Yang Chen Bao-Li An Pengfei Hu Bo Lu Jing Xu Zhenggang Xue Jiaqiang Xu 

机构地区：[1]NEST Lab,Department of Chemistry,College of Sciences,Shanghai University,Shanghai 200444,People’s Republic of China [2]Shanghai Synchrotron Radiation Facility,Zhangjiang Lab,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,People’s Republic of China [3]School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,People’s Republic of China [4]Key Laboratory of Organic Compound Pollution Control Engineering(MOE),School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,People’s Republic of China [5]Shanghai University,Instrumental Analysis&Research Center of Shanghai University,Shanghai 200444,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第7期343-357,共15页纳微快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(62271299);Shanghai Sailing Program(22YF1413400).Shanghai Engineering Research Center for We thank the Integrated Circuits and Advanced Display Materials.

摘　　要：Reasonably constructing an atomic interface is pronouncedly essential for surface-related gas-sensing reaction.Herein,we present an ingen-ious feedback-regulation system by changing the interactional mode between single Pt atoms and adjacent S species for high-efficiency SO_(2)sensing.We found that the single Pt sites on the MoS_(2)surface can induce easier volatiliza-tion 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 SO_(2)gas molecules.Further-more,in situ Raman,ex situ X-ray photoelectron spectroscopy testing and density functional theory analysis demonstrate the intact feedback-regulation system can expand the electron transfer path from single Pt sites to whole Pt-MoS_(2)supports in SO_(2)gas atmosphere.Equipped with wireless-sensing modules,the final Pt1-MoS_(2)-def sensors array can further realize real-time monitoring of SO_(2)levels and cloud-data storage for plant growth.Such a fundamental understanding of the intrinsic link between atomic interface and sensing mechanism is thus expected to broaden the rational design of highly effective gas sensors.

关 键 词：Feedback-regulation system Atomic interface SO_(2)sensor Single-atom sensing mechanism Intelligent-sensing array 

分 类 号：X831[环境科学与工程—环境工程] TP212[自动化与计算机技术—检测技术与自动化装置]