Temperature-Dependent Abnormal and Tunable p-n Response of Tungsten Oxide–Tin Oxide Based Gas Sensors

2015 ◽  
Vol 7 (44) ◽  
pp. 24887-24894 ◽  
Author(s):  
Han Li ◽  
Wuyuan Xie ◽  
Tianjie Ye ◽  
Bin Liu ◽  
Songhua Xiao ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
Tin Oxide ◽  
Temperature Dependent

scholarly journals Glyphosate Detection: An Innovative Approach by Using Chemoresistive Gas Sensors

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 910
Author(s):  
Barbara Fabbri ◽  
Matteo Valt ◽  
Andrea Gaiardo ◽  
Sandro Gherardi ◽  
Cesare Malagù ◽  
...  
Keyword(s):  
Solid Solution ◽  
Tungsten Oxide ◽  
Gas Sensors ◽  
Tin Oxide ◽  
Threshold Limit Value ◽  
Innovative Approach ◽  
Portable Devices ◽  
Working Temperature ◽  
Limit Value ◽  
Sensing Material

Glyphosate is the most frequently used herbicide worldwide, its hazard potential is unclear and nowadays a threshold limit value has not yet been determined. We used eight chemoresistive gas sensors based on semiconducting nanopowders for the identification of N-(phosphonomethyl) glycine in air. The sensors were tested at their proper working temperature in presence of volatile glyphosate at concentrations within the range of 6 ppb–1 ppm, i.e., a plausible interval of interest for its monitoring. The sensing material that best performed was a solid solution of Tungsten oxide and Tin oxide (WS30). This study opens up to design portable devices suitable for monitoring glyphosate concentrations at which workers and people are exposed.

Selectivity and sensitivity studies on plasma treated thick film tin oxide gas sensors

2000 ◽  
Vol 31 (4) ◽  
pp. 283-290 ◽  
Author(s):  
A Chaturvedi ◽  
V.N Mishra ◽  
R Dwivedi ◽  
S.K Srivastava
Keyword(s):  
Thick Film ◽  
Gas Sensors ◽  
Tin Oxide ◽  
Sensitivity Studies

scholarly journals Nanostructured Tungsten Oxide Composite for High-Performance Gas Sensors

Sensors ◽  
2015 ◽  
Vol 15 (10) ◽  
pp. 27035-27046 ◽  
Author(s):  
Siyuan Chen ◽  
Ali Aldalbahi ◽  
Peter Feng
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
High Performance ◽  
Oxide Composite

Thin film tin oxide-based propane gas sensors

2000 ◽  
Vol 373 (1-2) ◽  
pp. 141-144 ◽  
Author(s):  
G Carbajal-Franco ◽  
A Tiburcio-Silver ◽  
J.M Domı́nguez ◽  
A Sánchez-Juárez
Keyword(s):  
Thin Film ◽  
Gas Sensors ◽  
Tin Oxide

Reactively sputtered indium tin oxide polycrystalline thin films as NO and NO2 gas sensors

1990 ◽  
Vol 186 (2) ◽  
pp. 349-360 ◽  
Author(s):  
G. Sberveglieri ◽  
P. Benussi ◽  
G. Coccoli ◽  
S. Groppelli ◽  
P. Nelli
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Polycrystalline Thin Films ◽  
No2 Gas Sensors

Effects of Substrates on Properties of Tin Oxide Gas Sensors

2004 ◽  
Vol 43 (6A) ◽  
pp. 3493-3497 ◽  
Author(s):  
Gi-Hong Rue ◽  
Dae-Sik Lee ◽  
Duk-Dong Lee
Keyword(s):  
Gas Sensors ◽  
Tin Oxide

scholarly journals Acetone Sensing and Catalytic Conversion by Pd-Loaded SnO2

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 5921
Author(s):  
Pascal M. Gschwend ◽  
Florian M. Schenk ◽  
Alexander Gogos ◽  
Sotiris E. Pratsinis
Keyword(s):  
Gas Sensors ◽  
Tin Oxide ◽  
Operating Temperature ◽  
Packed Bed ◽  
Sensor Performance ◽  
Response Recovery ◽  
Recovery Times ◽  
Metal Additives ◽  
Metal Oxide Gas Sensors ◽  
Sensing Performance

Noble metal additives are widely used to improve the performance of metal oxide gas sensors, most prominently with palladium on tin oxide. Here, we photodeposit different quantities of Pd (0–3 mol%) onto nanostructured SnO2 and determine their effect on sensing acetone, a critical tracer of lipolysis by breath analysis. We focus on understanding the effect of operating temperature on acetone sensing performance (sensitivity and response/recovery times) and its relationship to catalytic oxidation of acetone through a packed bed of such Pd-loaded SnO2. The addition of Pd can either boost or deteriorate the sensing performance, depending on its loading and operating temperature. The sensor performance is optimal at Pd loadings of less than 0.2 mol% and operating temperatures of 200–262.5 °C, where acetone conversion is around 50%.

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