Xylene gas sensor based on α-MoO3/α-Fe2O3 heterostructure with high response and low operating temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 39442-39448 ◽  
Author(s):  
Dingsheng Jiang ◽  
Wei Wei ◽  
Feng Li ◽  
Yujia Li ◽  
Caixia Liu ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Hydrothermal Treatment ◽  
Treatment Strategy ◽  
Operating Temperature ◽  
High Response

α-MoO3 nanobelts covered with α-Fe2O3 were successfully prepared via two steps hydrothermal treatment strategy. α-MoO3/α-Fe2O3 composites showed a high response to xylene at a low operating temperature.

Xylene sensor based on α-MoO3 nanobelts with fast response and low operating temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18655-18659 ◽  
Author(s):  
Dingsheng Jiang ◽  
Ying Wang ◽  
Wei Wei ◽  
Feng Li ◽  
Yujia Li ◽  
...  
Keyword(s):  
Hydrothermal Treatment ◽  
Treatment Strategy ◽  
Operating Temperature ◽  
Fast Response ◽  
Rapid Response ◽  
Working Temperature

The best condition of the α-MoO3 nanobelts was researched via hydrothermal treatment strategy. α-MoO3 nanobelts showed rapid response and low working temperature to xylene detection.

Pt decorated SnO2 nanoparticles for high response CO gas sensor under the low operating temperature

2019 ◽  
Vol 30 (4) ◽  
pp. 3921-3932 ◽  
Author(s):  
Sijia Peng ◽  
Ping Hong ◽  
Yuxiu Li ◽  
Xinxin Xing ◽  
Yue Yang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Operating Temperature ◽  
Sno2 Nanoparticles ◽  
High Response ◽  
Co Gas Sensor ◽  
Co Gas

scholarly journals SnO–Sn3O4 heterostructural gas sensor with high response and selectivity to parts-per-billion-level NO2 at low operating temperature

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29843-29854
Author(s):  
Wenwen Zeng ◽  
Yingzhi Liu ◽  
Guoliang Chen ◽  
Haoran Zhan ◽  
Jun Mei ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Operating Temperature ◽  
High Response

A novel SnO–Sn3O4 heterostructural gas sensor with high response and selectivity to ppb-level NO2 at 75 °C and room temperature.

Effect of Operating Temperature on Characteristics of Single-Walled Carbon Nanotubes Gas Sensor

2005 ◽  
Vol 486-487 ◽  
pp. 485-488 ◽  
Author(s):  
Hong Quang Nguyen ◽  
Mai Van Trinh ◽  
Jeung Soo Huh
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensor ◽  
Gas Adsorption ◽  
Operating Temperature ◽  
High Sensitivity ◽  
Single Walled Carbon Nanotubes ◽  
Fast Response ◽  
Carrier Gas ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The effect of operating temperature on characteristics of single-walled carbon nanotubes (SWNT) based gas sensor was investigated. SWNT-based sensor was fabricated from SWNT powder (Iljin Nanotech, Korea) by screen-printing method. SWNT powder (30 mg, AP grade) was dispersed into 0.78 gram a-terpineol (Aldrich) by ultrasonic vibration for 1 hour then stirred manually for 1 hour to increase adhesion. From this condensed solution, a thick film of SWNT was printed onto alumina substrates. The film then was sintered at 300oC for 2 hours to remove residual impurities. Upon exposure to some gases such as nitrogen, ammonia or nitric oxide, resistance of the sensor dramatically changes due to gas adsorption. In our experiments, SWNT-based sensor was employed to detect NH3 gas in N2 ambience. After saturated of N2, the sensor exposes to NH3 with various concentrations (from 5 ppm to 100 ppm, diluted by N2 as carrier gas). This sensor exhibits a fast response, high sensitivity but slow recovery at room temperature. By heating at high temperature and increasing the flow-rate of carrier gas, NH3 gas desorbs easily and recovery of the sensor improved. The heating also influenced the characteristics of sensors such as response and reproducibility. Other special changes in electric property of SWNT-based sensor caused by heating are also discussed.

scholarly journals Chemically synthesized PbS Nano particulate thin films for a rapid NO2 gas sensor

2016 ◽  
Vol 34 (1) ◽  
pp. 204-211 ◽  
Author(s):  
Vishal V. Burungale ◽  
Rupesh S. Devan ◽  
Sachin A. Pawar ◽  
Namdev S. Harale ◽  
Vithoba L. Patil ◽  
...  
Keyword(s):  
Thin Films ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
Gas Sensitivity ◽  
Silar Method ◽  
Layer Adsorption ◽  
Gas Sensing Properties

AbstractRapid NO2 gas sensor has been developed based on PbS nanoparticulate thin films synthesized by Successive Ionic Layer Adsorption and Reaction (SILAR) method at different precursor concentrations. The structural and morphological properties were investigated by means of X-ray diffraction and field emission scanning electron microscope. NO2 gas sensing properties of PbS thin films deposited at different concentrations were tested. PbS film with 0.25 M precursor concentration showed the highest sensitivity. In order to optimize the operating temperature, the sensitivity of the sensor to 50 ppm NO2 gas was measured at different operating temperatures, from 50 to 200 °C. The gas sensitivity increased with an increase in operating temperature and achieved the maximum value at 150 °C, followed by a decrease in sensitivity with further increase of the operating temperature. The sensitivity was about 35 % for 50 ppm NO2 at 150 °C with rapid response time of 6 s. T90 and T10 recovery time was 97 s at this gas concentration.

Hollow NiFe2O4 hexagonal biyramids for high-performance n-propanol sensing at low temperature

2018 ◽  
Vol 42 (17) ◽  
pp. 14071-14074 ◽  
Author(s):  
Xue-Zhi Song ◽  
Yu-Lan Meng ◽  
Xi Chen ◽  
Kai-Ming Sun ◽  
Xiao-Feng Wang
Keyword(s):  
Low Temperature ◽  
Gas Sensor ◽  
High Performance ◽  
High Response ◽  
Cyclic Stability

A gas sensor based on hollow NiFe2O4 hexagonal biyramids exhibits high performances, including high response value, good selectivity and cyclic stability towards n-propanol while operating at low temperature.

Ethanol gas sensor based on a self-supporting hierarchical SnO2 nanorods array

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1800-1804 ◽  
Author(s):  
Qian Liu ◽  
Zhenyu Zhang ◽  
Wenyao Li ◽  
Kaibing Xu ◽  
Rujia Zou ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Response ◽  
Sno2 Nanorods ◽  
Solvothermal Route ◽  
Nanorods Array ◽  
One Step

3D hierarchical SnO2 nanorods array on homogeneous substrate was prepared by a one-step solvothermal route, which exhibited a high response to ethanol gas.

A low temperature operating gas sensor with high response to NO2 based on ordered mesoporous Ni-doped In2O3

2016 ◽  
Vol 40 (3) ◽  
pp. 2376-2382 ◽  
Author(s):  
Qiuyue Yang ◽  
Xiaobiao Cui ◽  
Jiangyang Liu ◽  
Jing Zhao ◽  
Yinglin Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Gas Sensor ◽  
High Response ◽  
Ordered Mesoporous ◽  
Temperature Operating

This study demonstrated that doping Ni enhanced the response of the sensor based on mesoporous In2O3 to NO2.

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