A carbon nanomaterials-modified MOF-derived Co3O4 p-p heterojunction was successfully constructed using a solution-combination-calcination method. The morphological and structural characteristics and their gas sensing performances were comprehensively investigated. Particularly, the synergistic effect between different carbon nanomaterials and Co3O4 mesoporous structures was carefully studied. The gas sensing results revealed that the sensor based on the CNT-rGO-Co3O4 nanocomposites exhibited better gas sensing properties toward the ethanol gas, including higher response, admirable antihumidit...
