Gas-sensing properties of individual multiwalled carbon nanotubes coated with vanadium oxides

2021 ◽  
Author(s):  
D. V. Sokolov ◽  
V. V. Bolotov ◽  
Y. A. Stenkin ◽  
K. E. Ivlev
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Gas Sensing ◽  
Vanadium Oxides ◽  
Multiwalled Carbon ◽  
Sensing Properties ◽  
Gas Sensing Properties

Gas sensing properties of printed multiwalled carbon nanotubes using the field emission effect

2006 ◽  
Vol 433 (1-3) ◽  
pp. 105-109 ◽  
Author(s):  
Yang Doo Lee ◽  
Woo-Sung Cho ◽  
Seung-IL Moon ◽  
Yun-Hi Lee ◽  
Jai Kyeong Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Field Emission ◽  
Gas Sensing ◽  
Multiwalled Carbon ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Emission Effect

scholarly journals Sensing Properties of Multiwalled Carbon Nanotubes Grown in MW Plasma Torch: Electronic and Electrochemical Behavior, Gas Sensing, Field Emission, IR Absorption

Sensors ◽  
2015 ◽  
Vol 15 (2) ◽  
pp. 2644-2661 ◽  
Author(s):  
Petra Majzlíková ◽  
Jiří Sedláček ◽  
Jan Prášek ◽  
Jan Pekárek ◽  
Vojtěch Svatoš ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Field Emission ◽  
Electrochemical Behavior ◽  
Plasma Torch ◽  
Gas Sensing ◽  
Ir Absorption ◽  
Multiwalled Carbon ◽  
Sensing Properties

Gas sensing properties of tin dioxide coated onto multi-walled carbon nanotubes

2006 ◽  
Vol 497 (1-2) ◽  
pp. 355-360 ◽  
Author(s):  
Yan-Li Liu ◽  
Hai-Feng Yang ◽  
Yu Yang ◽  
Zhi-Min Liu ◽  
Guo-Li Shen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tin Dioxide ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing

2019 ◽  
Vol 10 ◽  
pp. 105-118 ◽  
Author(s):  
Hussam M Elnabawy ◽  
Juan Casanova-Chafer ◽  
Badawi Anis ◽  
Mostafa Fedawy ◽  
Mattia Scardamaglia ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Gas Sensing ◽  
Oxide Nanoparticles ◽  
Silicon Substrates ◽  
Iron Salt ◽  
Multiwalled Carbon ◽  
Wet Chemistry ◽  
Gas Sensing Properties

In this work, we investigated the parameters for decorating multiwalled carbon nanotubes with iron oxide nanoparticles using a new, inexpensive approach based on wet chemistry. The effect of process parameters such as the solvent used, the amount of iron salt or the calcination time on the morphology, decoration density and nanocluster size were studied. With the proposed approach, the decoration density can be adjusted by selecting the appropriate ratio of carbon nanotubes/iron salt, while nanoparticle size can be modulated by controlling the calcination period. Pristine and iron-decorated carbon nanotubes were deposited on silicon substrates to investigate their gas sensing properties. It was found that loading with iron oxide nanoparticles substantially ameliorated the response towards nitrogen dioxide.

scholarly journals Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

2019 ◽  
Vol 10 ◽  
pp. 565-577 ◽  
Author(s):  
Juan Casanova-Cháfer ◽  
Carla Bittencourt ◽  
Eduard Llobet
Keyword(s):  
Carbon Nanotubes ◽  
Nitrogen Dioxide ◽  
Photoelectron Spectroscopy ◽  
Gas Sensing ◽  
Carbon Chain ◽  
Head Group ◽  
Carbon Chain Length ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Self Assembled

Here we describe the development of chemoresistive sensors employing oxygen-plasma-treated, Au-decorated multiwall carbon nanotubes (MWCNTs) functionalized with self-assembled monolayers (SAMs) of thiols. For the first time, the effects of the length of the carbon chain and its hydrophilicity on the gas sensing properties of SAMs formed on carbon nanotubes are studied, and additionally, the gas sensing mechanisms are discussed. Four thiols differing in the length of the carbon chain and in the hydrophobic or hydrophilic nature of the head functional group are studied. Transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy are used to analyze the resulting gas-sensitive hybrid films. Among the different nanomaterials tested, short-chain thiols having a hydrophilic head group, self-assembled onto Au-decorated carbon nanotubes were most responsive to nitrogen dioxide and ethanol vapors, even in the presence of ambient humidity. In particular, this nanomaterial was about eight times more sensitive to nitrogen dioxide than bare Au-decorated carbon nanotubes when operated at room temperature. This response enhancement is attributed to the interaction, via strong hydrogen bonding, of the polar molecules tested to the polar surface of hydrophilic thiols. The approach discussed here could be extended further by combining hydrophilic and hydrophobic thiol SAMs in Au-MWCNT sensor arrays as a helpful strategy for tuning sensor response and selectivity. This would make the detection of polar and nonpolar gas species employing low-power gas sensors easier, even under fluctuating ambient moisture conditions.

Liquid sensing properties of melt processed polypropylene/poly(ε-caprolactone) blends containing multiwalled carbon nanotubes

2011 ◽  
Vol 71 (12) ◽  
pp. 1451-1460 ◽  
Author(s):  
Petra Pötschke ◽  
Kazufumi Kobashi ◽  
Tobias Villmow ◽  
Timo Andres ◽  
Maria Conceição Paiva ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Sensing Properties ◽  
Liquid Sensing
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