Effects of Mg doping on optical and CO gas sensing properties of sensitive ZnO nanobelts

CrystEngComm ◽  
2014 ◽  
Vol 16 (27) ◽  
pp. 6080-6088 ◽  
Author(s):  
Muhammad Amin ◽  
Nazar Abbas Shah ◽  
Arshad Saleem Bhatti ◽  
Mohammad Azad Malik
Keyword(s):  
Gas Sensing ◽  
Optical Characterization ◽  
Vapor Transport ◽  
Sensing Properties ◽  
Mg Doping ◽  
Gas Sensing Properties ◽  
Transport Method ◽  
Vapor Transport Method ◽  
Co Gas ◽  
Mg Doped

We report the synthesis, optical characterization and enhanced carbon monoxide (CO) gas sensing properties of magnesium (Mg) doped 1D zinc oxide (ZnO) nanobelts obtained via a vapor transport method.

scholarly journals Influence of Mg Doping Levels on the Sensing Properties of SnO2 Films

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2158
Author(s):  
Bouteina Bendahmane ◽  
Milena Tomić ◽  
Nour El Houda Touidjen ◽  
Isabel Gràcia ◽  
Stella Vallejos ◽  
...  
Keyword(s):  
Doping Level ◽  
Tin Dioxide ◽  
Gas Sensing ◽  
Sno2 Film ◽  
Spray Pyrolysis Method ◽  
Composition Analysis ◽  
Ethanol Sensitivity ◽  
Sensing Properties ◽  
Mg Doping ◽  
Mg Doped

This work presents the effect of magnesium (Mg) doping on the sensing properties of tin dioxide (SnO2) thin films. Mg-doped SnO2 films were prepared via a spray pyrolysis method using three doping concentrations (0.8 at.%, 1.2 at.%, and 1.6 at.%) and the sensing responses were obtained at a comparatively low operating temperature (160 °C) compared to other gas sensitive materials in the literature. The morphological, structural and chemical composition analysis of the doped films show local lattice disorders and a proportional decrease in the average crystallite size as the Mg-doping level increases. These results also indicate an excess of Mg (in the samples prepared with 1.6 at.% of magnesium) which causes the formation of a secondary magnesium oxide phase. The films are tested towards three volatile organic compounds (VOCs), including ethanol, acetone, and toluene. The gas sensing tests show an enhancement of the sensing properties to these vapors as the Mg-doping level rises. This improvement is particularly observed for ethanol and, thus, the gas sensing analysis is focused on this analyte. Results to 80 ppm of ethanol, for instance, show that the response of the 1.6 at.% Mg-doped SnO2 film is four times higher and 90 s faster than that of the 0.8 at.% Mg-doped SnO2 film. This enhancement is attributed to the Mg-incorporation into the SnO2 cell and to the formation of MgO within the film. These two factors maximize the electrical resistance change in the gas adsorption stage, and thus, raise ethanol sensitivity.

scholarly journals CO Gas Sensing Properties of Pure and Cu-Incorporated SnO2 Nanoparticles: A Study of Cu-Induced Modifications

Sensors ◽  
2016 ◽  
Vol 16 (8) ◽  
pp. 1283 ◽  
Author(s):  
Tangirala Karthik ◽  
María Olvera ◽  
Arturo Maldonado ◽  
Heberto Gómez Pozos
Keyword(s):  
Gas Sensing ◽  
Sno2 Nanoparticles ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Co Gas

scholarly journals Structure and optical characterization of ZnxCd1−xTe thin films prepared by the close spaced vapor transport method

1991 ◽  
Vol 9 (3) ◽  
pp. 550-553 ◽  
Author(s):  
J. González‐Hernández ◽  
O. Zelaya ◽  
J. G. Mendoza‐Alverez ◽  
E. López‐Cruz ◽  
D. A. Pawlik ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Characterization ◽  
Vapor Transport ◽  
Transport Method ◽  
Vapor Transport Method

Large-area aligned CuO nanowires arrays: Synthesis, anomalous ferromagnetic and CO gas sensing properties

2012 ◽  
Vol 12 (5) ◽  
pp. 1349-1354 ◽  
Author(s):  
C.W. Zou ◽  
J. Wang ◽  
F. Liang ◽  
W. Xie ◽  
L.X. Shao ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Large Area ◽  
Sensing Properties ◽  
Cuo Nanowires ◽  
Gas Sensing Properties ◽  
Co Gas

CO2 and CO Gas Sensing Properties of Submicron CoSb2O6 Wires Prepared by a Colloidal Method

2012 ◽  
Vol 10 (1) ◽  
pp. 8-13 ◽  
Author(s):  
Carlos R. Michel ◽  
Alma H. Martínez-Preciado ◽  
Narda L. López Contreras
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Colloidal Method ◽  
Co Gas

Fabrication and CO gas-sensing properties of Pt-functionalized Ga2O3 nanowires

2012 ◽  
Vol 38 (5) ◽  
pp. 3563-3567 ◽  
Author(s):  
Hyunsu Kim ◽  
Changhyun Jin ◽  
Soyeon An ◽  
Chongmu Lee
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Co Gas
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