Selectivity enhancement of SnO2 nanofiber gas sensors by functionalization with Pt nanocatalysts and manipulation of the operation temperature

Influences of heat-treatment and measurement atmosphere on the electrochemical property of Pt–SnO device

“…In the present study, I-V characteristics of Pt-SnO x device were measured at 25 • C in air as shown in Fig. 2 [7,9,10,16]. The electron acceptor-type oxygen adsorbents increase the work function of metal, accompanied with the enhancement of Schottky barrier height.…”

“…improves the sensitivity, selectivity, and stability of gas sensors [7][8][9][10][11][12][13][14][15][16]. The Pt-SnO 2 gas sensor enables to monitor low concentrations of H 2 , NH 3 , NO x , SO x , CO, and hydrocarbons [10,13,15,16]. In such a sensor, the adsorption of gaseous species on constituent materials and the electron transfer at the interface play an important role in the sensing process.…”

Applications of Electrospun Nanofibers for Electronic Devices

“…In another paper [29], SnO 2 nanofibers which were prepared by calcination of electrospun nanofibers were used to prepare sensor device (Fig. 5f).…”

Pt-decorated GaN nanowires with significant improvement in H 2 gas-sensing performance at room temperature

“…The modification of the surface properties by decorating with Pt metal may causes different electrical characteristics due to the variation in the depletion layer width. Pt-decorated GaN NWs results in increasing the resistance of the sensing material, which is due to a higher oxygen adsorption at the NWs surface enhanced by a higher density of the semiconductor surface adsorption sites introduced by the presence of the additive (see Fig 10 (c)), or may be directly related to the existence of Pt catalyst localized at the NWs surface [67,69]. Pt is wellknown to encourage the gas sensing reaction by enhancing the spill-over of H 2 gas.…”

“…, O − ) and H 2 gas molecules[13,50,63,64].The basic parameters limiting gas sensing characteristics of 1-D semiconducting nanostructures are mainly the surface-to-volume ratio and surface morphology[16,18,20,25,[55][56][57][58][59][60][61][62][63][64][65][66][67]. 1-D NWs usually have rough and zigzagged surface.…”