Co,N-doped GQDs/SnO<sub>2</sub> mesoporous microspheres exhibit synergistically enhanced gas sensing properties for H<sub>2</sub>S gas detection
Tingting Chen, Jianhai Sun, Ning Xue, Xinxiao Zhang, Hairong Wang, Kaisheng Jiang, Tianye Zhou, Hao Quan
Abstract
The optimal sensor (Co,N-GQDs/SnO 2 ) response value toward 100 ppm H 2 S is 37.3 at 260 °C, which has superior sensing performance. This can be attributed to the increase of active sites on the surface and the electrical modulation of Co,N-GQDs.
Topics & Concepts
Mesoporous materialMicrosphereDopingMaterials scienceNanotechnologyChemical engineeringChemistryOptoelectronicsCatalysisOrganic chemistryEngineeringGas Sensing Nanomaterials and SensorsAnalytical Chemistry and SensorsElectrochemical sensors and biosensors