scholarly journals Ammonia Detection at Low Temperature by Tungsten Oxide Nanowires

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 983 ◽  
Author(s):  
Sandrine Bernardini ◽  
Florent Pourcin ◽  
Nassirou Nambiema ◽  
Olivier Margeat ◽  
Khalifa Aguir ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Tungsten Trioxide ◽  
Tin Dioxide ◽  
Thermal Strain ◽  
Oxide Nanowires ◽  
Interesting Approach ◽  
Ammonia Detection ◽  
Ammonia Sensors ◽  
Monitoring Devices ◽  
Semiconducting Metal Oxide

Ammonia detection at low temperatures below 150 °C is attractive to be well suited for flexible substrates in terms of thermal strain and to specific environment not allowing high temperature such as explosive one. In commercial gas sensors, tungsten trioxide is the mostly used semiconducting metal oxide after tin dioxide. We report herein the efficiency of tungsten trioxide nanowires deposited on rigid substrate by drop coating from colloidal solution. This study provides an interesting approach to fabricate ammonia sensors on conformable substrate with significant properties for applications in environmental monitoring devices.

Sulfur Dioxide Sensors

2021 ◽  
Keyword(s):  
Ionic Liquids ◽  
Sulfur Dioxide ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Optical Sensors ◽  
Recent Progress ◽  
Amperometric Sensors ◽  
Metal Oxide Sensors ◽  
Semiconducting Metal Oxide

Recent progress on the sensing and monitoring of sulfur dioxide in the environment is presented. The sensing materials covered include potentiometric gas sensors, amperometric sensors, optical sensors involving colorimetric and fluorescence changes, sensors based on ionic liquids, semiconducting metal-oxide sensors, photoacoustic detectors and biosensors.

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.

Ammonia detection in water with a tin dioxide based optical sensor

2005 ◽  
Author(s):  
Marco Pisco ◽  
Marco Consales ◽  
Stefania Campopiano ◽  
Antonello Cutolo ◽  
Roman Viter ◽  
...  
Keyword(s):  
Optical Sensor ◽  
Tin Dioxide ◽  
Ammonia Detection

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.

scholarly journals Xerogels of Ammonium Polyvanadatomolybdate as Starting Material for Ammonia Gas Sensors

2015 ◽  
Vol 50 ◽  
pp. 71-79
Author(s):  
Vladimiras Bondarenka ◽  
R. Sereika ◽  
A. Mironas ◽  
S. Grebinskij
Keyword(s):  
Gas Sensors ◽  
Sol Gel ◽  
Soft Chemistry ◽  
Special Equipment ◽  
Ammonia Gas ◽  
Layer 4 ◽  
Ammonia Sensors ◽  
Sol Gel Synthesis ◽  
Ammonia Gas Sensors ◽  
Different Gases

The various gas sensors were designed for detection of different gases in the air using different oxides and impurities [1-3]. For example the manufacturing of ammonia sensors on the basis of CuxS-micro-porous-Si structure includes manufacture of micro-porous silicon, drawing on it of SiO2 isolating layer, and then the CuxS layer [4, 5]. The special equipment for all these processes is needed. More usable method for sensor production is so-called soft chemistry or sol–gel synthesis [6, 7].

scholarly journals Comparative Studies of Chemoresistive Gas Sensors Based on Multiple Randomly Connected Wires and Arrays of Single-Wires

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 823
Author(s):  
Ondřej Chmela ◽  
Jakub Sadílek ◽  
Guillem Domènech-Gil ◽  
Isabel Gràcia ◽  
Albert Romano-Rodriguez ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
Comparative Studies ◽  
Response Rate ◽  
Response Magnitude ◽  
Interdigitated Electrodes ◽  
Oxide Nanowires ◽  
Single Nanowires ◽  
Magnitude Sensitivity

Chemoresitive gas sensors based on multiple nanowires (M-NWs) randomly grown and electrically inter-connected on the top of interdigitated electrodes (IDEs) and arrays of single nanowires connected between faced nanoelectrodes (A-S-NWs) are developed in this work. These systems, consisting of gas sensitive tungsten oxide nanowires (NWs), are tested to NO2, and their performance regarding the response magnitude, sensitivity and response rate are evaluated here.

The Effect of Operating Modes on the Response of Ammonia Sensors Based on Tin Dioxide Films

2020 ◽  
Vol 46 (5) ◽  
pp. 480-483
Author(s):  
A. V. Tsymbalov ◽  
V. M. Kalygina ◽  
N. K. Maksimova ◽  
E. V. Chernikov
Keyword(s):  
Tin Dioxide ◽  
Operating Modes ◽  
Ammonia Sensors

Extraordinary performance of semiconducting metal oxide gas sensors using dielectric excitation

2020 ◽  
Vol 3 (5) ◽  
pp. 280-289 ◽  
Author(s):  
Radislav A. Potyrailo ◽  
Steven Go ◽  
Daniel Sexton ◽  
Xiaxi Li ◽  
Nasr Alkadi ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Gas Sensors ◽  
Metal Oxide Gas Sensors ◽  
Semiconducting Metal Oxide
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