Enhanced and selective acetone sensing properties of SnO2-MWCNT nanocomposites: Promising materials for diabetes sensor

Enhanced Sensitivity of Surface Plasmon Resonance Biosensor Functionalized with Doped Polyaniline Composites for the Detection of Low-Concentration Acetone Vapour

“…The concentration of acetone in the human body is generally very low (0.1 ppm-0.8 ppm), although it can be higher in the case of metabolism disorders, including diabetes mellitus (DM) (1.8 ppm-5.0 ppm) [16][17][18]. Detection of such very low concentration has been achieved by chemiresistor-based sensors that mostly employ metal oxide semiconductors [19,20]. However, the contact resistance of the sensors' electrodes also contributes to the overall resistance of the device.…”

“…This leads to unreliable detection and poor selectivity, as little information other than resistance can be obtained [21]. Furthermore, metal oxide semiconductor sensors operate at a high temperature [19,[22][23][24][25] resulting to an increased energy consumption and unfavourable detection. SPR sensors are not subject to these effects.…”

Preparing SnO2/MWCNT Nanocomposite Catalysts via High Energy Ball Milling

“…For the efficient detection of SO 2 gas, MWCNT-SnO 2 and RGO-SnO 2 hybrid nanocomposite sensors were prepared by incorporating MWCNTs and RGO (reduced graphite oxide) into SnO 2 nanoparticle colloidal solution respectively by chemical route. 24 Pal et al 25 achieved high sensitivity, stability, ultrafast response toward sub-ppm acetone detection with a good resolution (i.e., promising material for diabetes sensor) just by using MWCNTs as a substrate for nanocrystalline SnO 2 prepared through a facile sol-gel technique. In our previous investigations, we successfully fabricated SnO 2 /MWCNT nanocomposite by the sol-gel method and their gas sensing properties were also studied.…”

SnO2/Graphene Nanoplatelet Nanocomposites: Solid-State Method Synthesis With High Ethanol Gas-Sensing Performance

“…As an n-type metal oxide semiconductor, tin dioxide (SnO 2 ) has a wide band gap of Eg = 3.6 eV and excellent optical and electrical properties. SnO 2 have been one of the most extensive studied materials due to its wide applications including in transparent conductive electrodes and transistors (Liu et al, 2018 ; Satoh et al, 2018 ), lithium-ion batteries (Zhao et al, 2016 ; Shi et al, 2017 ), dye-sensitized solar cells (Hagfeldt et al, 2010 ), photocatalysis (Aslam et al, 2018 ; Praus et al, 2018 ) and gas sensors (Narjinary et al, 2017 ; Long et al, 2018 ; Xu et al, 2018 ). For gas sensing application, SnO 2 and SnO 2 based composites also show admirable gas sensing properties like low-cost, low detection limit, fast response and recovery, high response and good stability (Yan et al, 2015 ; Cao et al, 2017 ; Kim et al, 2017 ).…”