One-pot synthesis of Sn4+ doped ZnO nanorods@nitrogen-doped carbon nanosheets for glycol sensing

• Sn 4+ doped ZnO nanorods@N-doped carbon nanosheets prepared by solution combustion. • Three morphologies can be controlled by regulating the addition amount of Sn 2+ . • The SZC-3 sensor exhibited high response (∼434.41) toward 100 ppm glycol at 260 °C. • Excellent repeatability, selectivity and linearity of the SZC-3 sensor presented. A facile one-pot solution combustion approach has been adopted to synthesize Sn 4+ doped ZnO nanorods@Nitrogen-doped carbon nanosheets (SZC) which utilized for detection of glycol vapor. The characterization results indicate that the morphology of ZnO depends on the Sn 2+ addition and changes from nanoparticle to nanorod and nanoblock. The sensor based on SZC material with the Sn 4+ dopant of 3.24 wt% exhibits the highest response (434.41) toward 100 ppm glycol at 260 °C, excellent repeatability and selectivity.