Hollow hierarchical SnO2-ZnO composite nanofibers with heterostructure based on electrospinning method for detecting methanol

Solvent-free infiltration method to prepare mesoporous SnO2 templated by SiO2 nanoparticles for ethanol sensing

“…When the mesoporous SnO 2 was exposed into ethanol, the reductive ethanol reacts with the absorbed O − and O 2 − , the depleted electrons are fed back into the conductance band of mesoporous SnO 2 , resulting in a narrowed depletion layer and therefore the senor resistance is decreased. The sensing mechanism of the mesoporous SnO 2 toward ethanol is similar with the previous reported ethanol sensors based on SnO 2 [32,34,35].…”

Enhanced sensitive and selective xylene sensors using W-doped NiO nanotubes

“…Consequently, a simple method is needed to detect xylene. In recent years, gas sensor based on metal oxide semiconductor nanomaterials, such as SnO 2 [7][8][9][10], WO 3 [11][12][13][14], In 2 O 3 [15][16][17][18] and NiO [19][20][21][22], has attracted much attention for harmful, environmental, explosive and toxic gas detection, and they are possible candidates as xylene sensors due to their advantages of high response to target gases, simplicity in preparation and costeffective. However, the design of high performance xylene sensors based on semiconductor is still in the early stages of investigation.…”

A high performance methanol gas sensor based on palladium-platinum-In2O3 composited nanocrystalline SnO2

“…However, the gas response values of these materials toward methanol are all poor, and the operating temperatures are quite high. For example, the response of SnO 2 -ZnO nanofibers is 8.5 toward 10 ppm methanol at 350 • C [37]. The as-prepared SnO 2 -Pd-Pt-In 2 O 3 composite in this work shows the highest gas response (83.40-5 ppm methanol or 320.73-100 ppm methanol) at low operating temperatures (160 • C).…”

“…A comparison between the sensing performances of the sensor and the literature reports is summarized in Table 2. As has been shown, there are various gas sensing materials were used to detect methanol gas [11,21,22,25,33,34,[36][37][38][39][40][41][42][43][44][45], including n-type and p-type oxide semiconductors, such as porous In 2 O 3 nanobelts [36], SnO 2 inverse opal [21], WO 3 particles [43], CuO thin film [45] and so on. However, the gas response values of these materials toward methanol are all poor, and the operating temperatures are quite high.…”