Dynamic coordination mechanism in single-atom sensing

Gas sensing technology is crucial for a wide variety of applications [1].Currently, the traditional gas sensing materials are hindered by limitations in selectively detecting single-type gas due to the nonspecific interactions between gas molecules and sensing materials [2,3].Single atoms (SAs) have the potential to generate specific effects on a single-type gas due to the uniform active center configuration [4,5].However, the means to stimulate the capacity of single atoms towards a single-type gas sensing are still lacking.Therefore, the design of highly sensitive and selective sensing single atom materials for single-type gas detection needs more attention.Recently, by utilizing the dynamic changes in the coordination structure of cobalt