Metal-organic frameworks (MOFs) derived oxide semiconductors have drawn more and more attention in many fields due to their unique structural merits. Herein, hierarchical flower-like Mo-doped Co3O4 derived Co-MOF has been synthesized through a solvothermal method and following annealing process. The gas sensing measurements show that the sensing properties of Mo-doped Co3O4 sample are far superior than that of pure Co3O4. In particular, 1 at% Mo-doped Co3O4 sample exhibits high response values of 92–50 ppm TEA at 180 °C, which are about 46 times than that of pure Co3O4 sample. In addition, it shows short recovery time (33 s), excellent gas selectivity, good repeatability and long-term stability. The improved gas sensing performance can be ascribed to Mo doping and hierarchical flower-like microstructure.
Co3O4Gas sensorMo dopingMOFsTEA
Du L.、Sun H.、Liu Y.
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Department of Materials and Chemical Engineering Taiyuan University
College of Physics Jilin University
Department of Physics School of Science Hainan University
NSTL
Elsevier
