Electrospun PEDOT:PSS/carbon nanotubes/PVP nanofibers as chemiresistors for aromatic volatile organic compounds

2012 ◽  
Vol 162 (17-18) ◽  
pp. 1513-1518 ◽  
Author(s):  
Jaewon Choi ◽  
Dong Wha Park ◽  
Sang Eun Shim
Keyword(s):  
Carbon Nanotubes ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic

scholarly journals Synthesis of Carbon Nanotubes and Volatile Organic Compounds Detection

2016 ◽  
Vol 39 ◽  
pp. 01006 ◽  
Author(s):  
S. Sobri ◽  
J. Jasni ◽  
Faizah M. Yasin ◽  
Siti Hasnawati Jamal ◽  
Nurjahirah Janudin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Volatile Organic ◽  
Synthesis Of Carbon Nanotubes

scholarly journals Pt- and Pd-decorated MWCNTs for vapour and gas detection at room temperature

2015 ◽  
Vol 6 ◽  
pp. 919-927 ◽  
Author(s):  
Hamdi Baccar ◽  
Atef Thamri ◽  
Pierrick Clément ◽  
Eduard Llobet ◽  
Adnane Abdelghani
Keyword(s):  
Carbon Nanotubes ◽  
Volatile Organic Compounds ◽  
Multiwalled Carbon Nanotubes ◽  
Organic Compounds ◽  
Room Temperature ◽  
Surface Defects ◽  
Pd Nanoparticles ◽  
Oxygen Plasma Treatment ◽  
Multiwalled Carbon ◽  
Volatile Organic

Here we report on the gas sensing properties of multiwalled carbon nanotubes decorated with sputtered Pt or Pd nanoparticles. Sputtering allows for an oxygen plasma treatment that removes amorphous carbon from the surface of the carbon nanotubes and creates oxygenated surface defects in which metal nanoparticles nucleate within a few minutes. The decoration with the 2 nm Pt or the 3 nm Pd nanoparticles is very homogeneous. This procedure is performed at the device level (i.e., for carbon nanotubes deposited onto sensor substrates) for many devices in one batch, which illustrates the scalability for the mass production of affordable nanosensors. The response to selected aromatic and non-aromatic volatile organic compounds, as well as pollutant gases has been studied. Pt- and Pd-decorated multiwalled carbon nanotubes show a fully reversible response to the non-aromatic volatile organic compounds tested when operated at room temperature. In contrast, these nanomaterials were not responsive to the aromatic compounds studied (measured at concentrations up to 50 ppm). Therefore, these sensors could be useful in a small, battery-operated alarm detector, for example, which is able to discriminate aromatic from non-aromatic volatile organic compounds in ambient.

scholarly journals Comparison of Adsorbents Containing Carbon Nanotubes for Express Pre-Concentration of Volatile Organic Compounds from the Air Flow

Separations ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 50
Author(s):  
Oleg Rodinkov ◽  
Victor Postnov ◽  
Valery Spivakovskyi ◽  
Andrey Vlasov ◽  
Alexandra Bugaichenko ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Multiwall Carbon Nanotubes ◽  
Pyrolytic Carbon ◽  
Chromatographic Determination ◽  
Composite Adsorbents ◽  
Air Stream ◽  
Volatile Organic ◽  
Multiwall Carbon

New composite adsorbents including silica supports (silica, aerosilogel, and diatomite) and carbon materials (multiwall carbon nanotubes and pyrolytic carbon) have been prepared and characterized. The analytical capabilities of the produced sorbents have been evaluated by their efficiency in the express pre-concentration of volatile organic compounds (butanol and phenols) from the air stream. The prepared surface-layered adsorbents containing multiwall carbon nanotubes placed onto the surface of aerosilogel by use of the carbon vapor deposition method with preloading cobalt nanostructures as a catalyst were found significantly more efficient than traditionally used graphitic carbon-based adsorbents Carbopacks B, C, and X. Additionally, a new adsorbent composed of diatomite Porochrome-3 support coated with a pyrocarbon layer was prepared. This low surface area composited adsorbent allowed both quantitative pre-concentration of phenol and isomeric cresols from the air and their thermal desorption. The developed adsorbents provided fast pre-concentration of selected phenols with a concentration factor of 2 × 103 in 5 min and were used for gas chromatographic determination of analytes in the air at low concentration levels starting from several μg/m3 with a flame ionization detector.

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