Preparation of One-dimensional Pt/SnO_2 Nanofibers and NO_x Gas-sensing Properties

1D Pt/SnO2 hollow nanofibers were synthesized by electrospinning method to prepare and to study the nanomaterials with the higher sensitivity and faster response to NOx at room temperature.The characteristics and morphology of material were studied by XRD,SEM and TEM.NOx gas sensor was tested at room temperature.The results show that the 1D Pt/SnO2 nanomaterials is hollow tubular and similar tubular structure.The sample with 0.3wt% Pt has the highest sensitivity,the fastest response to 9.7×10-5 V/V NOx,the sensitivity up to 109.6% and response time of 11.33 s.When the sample is doped with Pt 0.5wt%,its limit level is 2.91×10-6 V/V.