PtO2-decorated MoS2 ultrathin nanostructures for enhanced NH3 gas sensing properties

A sigh-performance hydrogen gas sensor based on Ag/Pd nanoparticle-functionalized ZnO nanoplates

“…The detection limit (DL) was calculated using the slope of the linear regime as described before. 36 …”

“…The detection limit (DL) was calculated using the slope of the linear regime as described before. 36 The structure, morphology, and composition of the prepared materials were characterized using a scanning electron microscope (SEM, JEOL 7600F), energy-dispersive X-ray spectroscope (EDS), X-ray diffractometer (XRD, D2 Phaser, Bruker) with Cu K a radiation, and high-resolution transmission electron microscope (HRTEM, JSM 2100 F).…”

Resistive gas sensors for the detection of NH3 gas based on 2D WS2, WSe2, MoS2, and MoSe2: a review

“…The sensor with 0.5% PtO 2 showed a high response of 450% to 500 ppm NH 3 at 200 • C. Furthermore, the formation of p-n PtO 2 -MoS 2 accounted for the sensing enhancement. However, the sensor with the highest amount of PtO 2 exhibited some agglomeration, which leading to an increase in the size of PtO 2 and a decreased catalytic effect [131].…”

Conductive polythiophene/graphitic-carbon nitride nanocomposite for the detection of ethanol mixing in petrol

“…The development of chemical/gas/ vapour sensors has recently focused heavily on carbon nanomaterials, metal oxide semiconductors, conductive polymers (CPs) and their nanocomposites. [5][6][7][8][9][10][11][12][13][14][15][16][17][18] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities, and self-resistivity changes upon exposure to various gases, conducting polymers have long been sought aer as chemiresistor materials. [16][17][18][19][20][21] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities along with selfresistivity which alters when exposed to variety of gases, CPs have for a long time been used as chemiresistor.…”

“…[16][17][18][19][20][21] Due to its extraordinary functionalities through regulated charge transfer process, adjustable electrical conductivities along with selfresistivity which alters when exposed to variety of gases, CPs have for a long time been used as chemiresistor. [9][10][11][12][13] Polythiophene (PTh) being chemically, thermally and environmentally highly durable is amongst the most researched CPs. PTh and its derivatives stood out among gas sensors owing to their distinctive doping and de-doping mechanisms that produce a change in electrical conductivity when exposed to various chemicals and gases.…”