Synergistically improved formaldehyde gas sensing properties of SnO2 microspheres by indium and palladium co-doping

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

“…It is well known that response and recovery characteristics are important for evaluating the performances of the as-fabricated sensors [32]. Fig.…”

A highly sensitive gas sensor employing biomorphic SnO2with multi-level tubes/pores structure: bio-templated from waste of flax

“…Here, Table 2 shows a comparison of the HCHO gas sensitivity performance of nanostructured materials (based on SnO 2 ) with different structures. As shown in Table 2, the sensor in this work (SnO 2 (biomorphic MLTPS)) exhibited a higher response value (87.9/50 ppm) than other HCHO gas sensors containing a single SnO 2 component, 26,36 decorated SnO 2 , 35,[40][41][42] and composite SnO 2 . 43 In addition, while fast response and recovery times (2 s/7 s) were reported, their operating temperatures were higher than that of the MLTPS gas sensor.…”

Synthesis and Characterization of Thin Nanostructured Bismuth Doped Tin Oxide Films and Sensing Studies

“…Therefore pure SnO 2 slightly using in sensors production [1,2]. Catalytic electroactive dopants as In, Pd, Ni, Er, Zn are used for correction of pure SnO 2 physicochemical properties, particularly, for intrinsic defects compensation, structure strengthening, selectivity and sensibility improvement [3][4][5][6][7]. Tin dioxide thin films doping provides significant modification their microstructure and electronic structure changing crystallites growth mechanisms and parameters, producing additional donor and acceptor states hence changing material conductance.…”