Equilibration Time:  Kinetics of Gas Adsorption on Closed- and Open-Ended Single-Walled Carbon Nanotubes

2007 ◽  
Vol 111 (35) ◽  
pp. 12980-12986 ◽  
Author(s):  
Dinesh S. Rawat ◽  
M. Mercedes Calbi ◽  
Aldo D. Migone
Keyword(s):  
Carbon Nanotubes ◽  
Gas Adsorption ◽  
Single Walled Carbon Nanotubes ◽  
Equilibration Time ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Kinetics Of

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.

The Kinetics of Dye Encapsulation in Single-Walled Carbon Nanotubes Probed By Statistical Raman Imaging

2021 ◽  
Vol MA2021-01 (11) ◽  
pp. 572-572
Author(s):  
Charlotte Allard ◽  
Etienne Gaufres ◽  
Patrick Desjardins ◽  
Richard Martel
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Raman Imaging ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Kinetics Of

scholarly journals Kinetics of Energy Selective Cs Encapsulation in Single-Walled Carbon Nanotubes for Damage-Free and Position-Selective Doping

2015 ◽  
Vol 119 (21) ◽  
pp. 11903-11908 ◽  
Author(s):  
Toshiaki Kato ◽  
Erik C. Neyts ◽  
Yoshihiro Abiko ◽  
Toshiki Akama ◽  
Rikizo Hatakeyama ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Selective Doping ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Kinetics Of
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