The effect of microstructure on the height of potential energy barriers in porous tin dioxide gas sensors

1988 ◽  
Vol 63 (10) ◽  
pp. 5159-5165 ◽  
Author(s):  
P. Romppainen ◽  
V. Lantto
Keyword(s):  
Potential Energy ◽  
Gas Sensors ◽  
Tin Dioxide ◽  
Energy Barriers ◽  
Effect Of Microstructure

scholarly journals Characterization of tin dioxide nanoparticles synthesized by oxidation

Cerâmica ◽  
2015 ◽  
Vol 61 (359) ◽  
pp. 328-333 ◽  
Author(s):  
R. C. Abruzzi ◽  
B. A. Dedavid ◽  
M. J. R. Pires
Keyword(s):  
Gas Sensors ◽  
Tin Dioxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Synthesis Conditions ◽  
Tetragonal Crystal ◽  
Tetragonal Crystal Structure ◽  
Activation Efficiency ◽  
Complementary Techniques

AbstractTin dioxide (SnO2) is a promising material with great potential for applications such as gas sensors and catalysts. Nanostructures of this oxide exhibit greater activation efficiency given their larger effective surface. The present study presents results of the synthesis and characterization of tin dioxide under different conditions via oxidation of solid tin with nitric oxide. SnO2powder was characterized primarily by X-ray diffraction and scanning electron microscopy, as well as complementary techniques such as energy-dispersive X-ray spectroscopy, dynamic light scattering and Fourier transform infrared spectroscopy. The results indicated that the established synthesis conditions were suitable for obtaining rutile tin dioxide nanoparticles with a tetragonal crystal structure.

scholarly journals Study of properties of electrical conductivity of Tin dioxide thin films treated with Xenon impulse radiation used as Gas sensors

2009 ◽  
Vol 6 (4) ◽  
pp. 693-697
Author(s):  
Baghdad Science Journal
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Short Duration ◽  
Gas Sensors ◽  
Tin Dioxide ◽  
Experimental Result ◽  
Gas Sensitivity ◽  
Gas Concentration ◽  
Similar Character

During of Experimental result of this work , we found that the change of electrical conductivity proprieties of tin dioxide with the change of gas concentration at temperatures 260oC and 360oC after treatment by photons rays have similar character after treatment isothermally. We found that intensive short duration impulse annealing during the fractions of a second leads to crystallization of the films and to the high values of its gas sensitivity.

Theoretical rationalisation of the photophysics of a TICT excited state of cinnamoyl–coumarin derivatives in homogeneous and biological membrane models

2018 ◽  
Vol 20 (43) ◽  
pp. 27621-27629 ◽  
Author(s):  
Daniel Zúñiga-Núñez ◽  
Ricardo A. Zamora ◽  
Pablo Barrias ◽  
Cristian Tirapegui ◽  
Horacio Poblete ◽  
...  
Keyword(s):  
Excited State ◽  
Potential Energy ◽  
Structural Dynamics ◽  
Biological Membrane ◽  
Coumarin Derivatives ◽  
Energy Barriers ◽  
Membrane Models

Analysis of the potential energy barriers and structural dynamics of a new TICT-probe for monitoring biological environments.

TUNNELLING CORRECTIONS FOR UNSYMMETRICAL ECKART POTENTIAL ENERGY BARRIERS

1962 ◽  
Vol 66 (3) ◽  
pp. 532-533 ◽  
Author(s):  
Harold S. Johnston ◽  
Julian Heicklen
Keyword(s):  
Potential Energy ◽  
Energy Barriers ◽  
Eckart Potential

The role of additives in tin dioxide-based gas sensors

1992 ◽  
Vol 9 (3) ◽  
pp. 227-231 ◽  
Author(s):  
Hae-Won Cheong ◽  
Jeong-Ja Choi ◽  
Heesook P. Kim ◽  
Jong-Myong Kim ◽  
Jae-mook Kim ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Tin Dioxide

scholarly journals Reducing Humidity Response of Gas Sensors for Medical Applications: Use of Spark Discharge Synthesis of Metal Oxide Nanoparticles

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2600 ◽  
Author(s):  
Alexey Vasiliev ◽  
Andrey Varfolomeev ◽  
Ivan Volkov ◽  
Nikolay Simonenko ◽  
Pavel Arsenov ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Tin Dioxide ◽  
Early Stage ◽  
Sno2 Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Sol Gel ◽  
Spark Discharge ◽  
Hydroxyl Groups ◽  
Enteric Infection

The application of gas sensors in breath analysis is an important trend in the early diagnostics of different diseases including lung cancer, ulcers, and enteric infection. However, traditional methods of synthesis of metal oxide gas-sensing materials for semiconductor sensors based on wet sol-gel processes give relatively high sensitivity of the gas sensor to changing humidity. The sol-gel process leading to the formation of superficial hydroxyl groups on oxide particles is responsible for the strong response of the sensing material to this factor. In our work, we investigated the possibility to synthesize metal oxide materials with reduced sensitivity to water vapors. Dry synthesis of SnO2 nanoparticles was implemented in gas phase by spark discharge, enabling the reduction of the hydroxyl concentration on the surface and allowing the production of tin dioxide powder with specific surface area of about 40 m2/g after annealing at 610 °C. The drop in sensor resistance does not exceed 20% when air humidity increases from 40 to 100%, whereas the response to 100 ppm of hydrogen is a factor of 8 with very short response time of about 1 s. The sensor response was tested in mixtures of air with hydrogen, which is the marker of enteric infections and the marker of early stage fire, and in a mixture of air with lactate (marker of stomach cancer) and ammonia gas (marker of Helicobacter pylori, responsible for stomach ulcers).

Ultra-sensitive hydrogen gas sensors based on Pd-decorated tin dioxide nanostructures: Room temperature operating sensors

2010 ◽  
Vol 35 (22) ◽  
pp. 12568-12573 ◽  
Author(s):  
Jun Min Lee ◽  
Ji-eun Park ◽  
Seri Kim ◽  
Sol Kim ◽  
Eunyoung Lee ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Hydrogen Gas ◽  
Hydrogen Gas Sensors ◽  
Temperature Operating

In situ infrared and electrical characterization of tin dioxide gas sensors in nitrogen/oxygen mixtures at temperatures up to 720 K

1994 ◽  
Vol 19 (1-3) ◽  
pp. 478-482 ◽  
Author(s):  
S. Lenaerts ◽  
M. Honoré ◽  
G. Huyberechts ◽  
J. Roggen ◽  
G. Maes
Keyword(s):  
Gas Sensors ◽  
Tin Dioxide ◽  
Electrical Characterization
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