Table 2 Acetone sensing characteristics of the SnO2-based gas sensors
From: SnO2 nanostructure-based acetone sensors for breath analysis
Materials | Temp (ºC) | Conc. (ppm) | Response (s) | Response/recovery times (s) | Ref |
|---|---|---|---|---|---|
PdAu/SnO2 | 250 | 2 | 6.5 | 5/4 | [82] |
Au/ SnO2 | 220 | 5 | 3.1 | 0.9/21 | [67] |
Rh/ SnO2 | 200 | 50 | 60.6 | 2/64 | [69] |
Ru/ SnO2 hollow nanotubes | 250 | 100 | 340 | 0.58/8.4 | [83] |
Ru/ SnO2 nanofibers | 200 | 100 | 118.8 | 1/86 | [84] |
ZnSnO3/ZnO Hollow spheres | 280 | 50 | 17.3 | 3/13 | [85] |
Solid SnO2/ZnSnO3 spheres | 290 | 100 | 15 | 12/118 | [86] |
double-shell hollow SnO2/ZnSnO3 spheres | 290 | 100 | 30 | 9/122 | [86] |
Ce-SnO2 nanoparticles | 270 | 50 | 50.5 | 17/38 | [75] |
Co-SnO2 | 350 | 1000 | 1637 | 75/- | [87] |
SnO2/ZnO heterostructure | 300 | 100 | 85 | 19/9 | [88] |
SnO2/Au-doped In2O3 core–shell nanofibers | 300 | 100 | 12 | 2/9 | [89] |
SnO2-rGO | 35 | 10 | 2.19 | 107/146 | [90] |
Pt-SnO2 nanofibers | 170 | 100 | 104.26 | 107/90 | [91] |
TiO2/SnO2 heterostructure | 280 | 100 | 13.7 | 2/60 | [92] |
Pd@ZnO-SnO2 | 400 | 5 | 10.12 | 16/36 | [93] |
Hollow SnO2 nanobelt | 260 | 5 | 6.7 | 38/9 | [56] |
RGO-SnO2 NFs | 350 | 5 | 10.0 | 28/100 | [51] |
Pt-SnO2 NFs | 400 | 3 | 7.12 | 30/20 | [94] |
Pt-SnO2 NTs | 350 | 1 | 25 | 40/60 | [95] |
Pt-PS_SnO2 NTs | 350 | 1 | 34.8 | -/- | [63] |