Room temperature gas sensing properties of SnO2/multiwall-carbon-nanotube composite nanofibers

2007 ◽  
Vol 91 (13) ◽  
pp. 133110 ◽  
Author(s):  
An Yang ◽  
Xiaoming Tao ◽  
Rongxing Wang ◽  
Shuncheng Lee ◽  
Charles Surya
Keyword(s):  
Carbon Nanotube ◽  
Room Temperature ◽  
Composite Nanofibers ◽  
Gas Sensing ◽  
Multiwall Carbon Nanotube ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Carbon Nanotube Composite ◽  
Multiwall Carbon

scholarly journals Room temperature gas sensing properties of ultrathin carbon nanotube films by surfactant-free dip coating

2016 ◽  
Vol 227 ◽  
pp. 128-134 ◽  
Author(s):  
Carlo Piloto ◽  
Francesca Mirri ◽  
Elie Amram Bengio ◽  
Marco Notarianni ◽  
Bharati Gupta ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Room Temperature ◽  
Gas Sensing ◽  
Dip Coating ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Nanotube Films

The Humidity Sensitive Behavior of Poly(Ethyleneimine)/Multiwall Carbon Nanotube Composite Films

2012 ◽  
Vol 531-532 ◽  
pp. 588-591
Author(s):  
Tao Zhu ◽  
Guang Zhong Xie ◽  
Ya Dong Jiang ◽  
Jian Liao ◽  
Hui Ling Tai
Keyword(s):  
Carbon Nanotube ◽  
Relative Humidity ◽  
Composite Films ◽  
Multiwall Carbon Nanotube ◽  
Sensing Material ◽  
Nanotube Composites ◽  
Interdigitated Microelectrode ◽  
Carbon Nanotube Composite ◽  
Multiwall Carbon ◽  
Sensitive Behavior

In this paper, a novel humidity sensor based on polymer-carbon nanotube composites was prepared and characterized. Two different methods were adopted to fabricate the humidity-sensing film for these sensors. The surface of the films was observed by a scanning electron microscope (SEM). The sensing material made up of poly(ethyleneimine) and multiwall carbon nanotube was sprayed on the interdigitated microelectrode pairs(IDTs). The resistance between the two electrodes was measured at different relative humidity levels at 19°C. The data shows that the resistance increases with the rise of the relative humidity over the range of 5-90% RH and that, the resistance increases almost linearly in the range of 5-71% RH. The response of the sensors to NO2 and NH3 were also examined, and the results reveal that the sensor is not sensitive to both of them.

A facile microwave synthesis of rGO, ZrO2 and rGO–ZrO2 nanocomposite and their room temperature gas sensing properties

2019 ◽  
Vol 30 (18) ◽  
pp. 17094-17105
Author(s):  
Akshay Krishnakumar ◽  
Parthasarathy Srinivasan ◽  
Arockia Jayalatha Kulandaisamy ◽  
K. Jayanth Babu ◽  
John Bosco Balaguru Rayappan
Keyword(s):  
Microwave Synthesis ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties

scholarly journals Preparation of Nanostructured SnO2-NiO Composite Semiconductor for Gas Sensor Applications

2021 ◽  
pp. 391-403
Author(s):  
S. Kumar ◽  
P. Gowthaman ◽  
J. Deenathayalan
Keyword(s):  
Gas Sensor ◽  
Composite Nanofibers ◽  
Volume Fraction ◽  
Gas Sensing ◽  
Precipitation Method ◽  
Response Sensitivity ◽  
X Ray ◽  
Sensing Properties ◽  
Working Temperature ◽  
Gas Sensing Properties

Electro spinning technology combined with chemical precipitation method and high-temperature calcination was used to prepare SnO2-NiO composite semiconductor nanofibers with different Sn content. Scanning electron microscope (SEM), X-ray diffractometer (XRD) and energy dispersive X-ray spectrometer (EDS) were used to characterize the morphology, structure and content of various elements of the sample. Using ethanol as the target gas, the gas sensing properties of SnO2-NiO nanofibers and the influence of Sn content on the gas sensing properties of composite nanofibers were explored. The research results show that SnO2-NiO composite nanofibers have a three-dimensional network structure, and the SnO2 composite can significantly enhance the gas sensitivity of NiO nanofibers. With increase of SnO2 content, the response sensitivity of composite fibers to ethanol gas increases, and the response sensitivity of composite nanofibers with the highest response to ethanol gas with a volume fraction of 100×10-6 at the optimal working temperature of 160℃ are13.4;It is 8.38 times the maximum response sensitivity of NiO nanofibers. Compared with the common ethanol gas sensor MQ-3 on the market, SnO2-NiO composite nanofibers have a lower optimal working temperature and higher response sensitivity, which has certain practical application value

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