A new chemiresistor sensor based on a blend of carbon nanotube, nano-sized molecularly imprinted polymer and poly methyl methacrylate for the selective and sensitive determination of ethanol vapor

Alizadeh, Taher; Rezaloo, Fatema

doi:10.1016/j.snb.2012.08.049

Cited by 59 publications

(21 citation statements)

References 45 publications

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“…However, their selectivity is still unsatisfactory, so immobilization of MIP-coated CNTs at the gate area of FETs should increase the selectivity. However, so far, this approach has not been investigated much [107] and is still awaiting more thorough exploration.…”

Section: Discussionmentioning

confidence: 99%

Surface development of molecularly imprinted polymer films to enhance sensing signals

Sharma

Dąbrowski

D’Souza

et al. 2013

TrAC Trends in Analytical Chemistry

106

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Section: Discussionmentioning

confidence: 99%

Surface development of molecularly imprinted polymer films to enhance sensing signals

Sharma

Dąbrowski

D’Souza

et al. 2013

TrAC Trends in Analytical Chemistry

106

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“…The resistance change of several materials is different upon exposure to specific compounds so many sensing methods are based on it. Therefore, chemiresistors are also widespread to detect series of organic compounds in air [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Exposure Studies of Different Kinds of Volatile Organic Compounds in Vapour Phase with a Narrow-gap Cell Containing CuxS Modified Carbon Microdisc Electrode

Kiss¹

2018

Period. Polytech. Chem. Eng.

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In this article, the feasibility of the CuxS modified carbon microdisc electrode was examined by exposure to four different volatile organic compounds (2-propanol, acetic acid, ethyl acetate and n-butylamine) directly in their vapour phase using cyclic voltammetry and amperometry. The performance of the modified microdisc was compared with the bare carbon microdisc (30 μm in diameter) which was involved in a narrow-gap cell. By using both methods high current increase was observed for 2-propanol with the modified electrode and its sensitivity was sufficiently higher than with the bare electrode. The modified electrode showed lower current signals in case of acetic acid and n-butylamine. The latter formed a condensation layer at the interelectrode gap. Neither the bare nor the modified electrode was sensitive to ethyl acetate.

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“…Carbon-based materials such as graphite, carbon nanotubes and graphene have shown to be the ideal candidates in the sensing field [19][20][21][22][23][24][25][26][27][28]. Graphene, as a twodimensional carbon nanomaterial, is an ideal choice for sensing applications owing to its large surface-to-volume ratio and special electrical property [29,30].…”

Section: Introductionmentioning

confidence: 99%

A new hydrogen cyanide chemiresistor gas sensor based on graphene quantum dots

Alizadeh

Shokri

Hanifehpour

et al. 2016

International Journal of Environmental Analytical Chemistry

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Graphene quantum dots (GQDs), synthesised via controlled carbonisation of citric acid, were reduced by hydrazine hydrate and then used as hydrogen cyanide (HCN) gas sensors. Checking of the reduction step by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) techniques revealed that most of the oxygen-containing functional groups were removed from the GQDs. It was observed the reduction process is necessary for sensitising of GQDs for HCN gas. The electrical resistance of the reduced GQDs was increased as a result of their exposure to HCN gas. Accepting a p-type semiconducting characteristic for GQD material, the above-mentioned behaviour suggested electron donation from HCN to GQD. The sensor response to HCN gas was reversible, suggesting a reversible adsorption/desorption phenomenon of HCN to the GQDs. The response as well as the recovery time of the sensor was different depending on the HCN concentration tested. The developed sensor showed linear HCN response from 1 to 100 ppm. The detection limit of the sensor was estimated to be 0.6 ppm (S/N).Relative standard deviation f HCN determination by the developed sensor was calculated to be 5.7% (n = 4, [HCN] = 50 ppm). The sensor response was did not vary significantly within 6 months. ARTICLE HISTORY

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A new chemiresistor sensor based on a blend of carbon nanotube, nano-sized molecularly imprinted polymer and poly methyl methacrylate for the selective and sensitive determination of ethanol vapor

Cited by 59 publications

References 45 publications

Surface development of molecularly imprinted polymer films to enhance sensing signals

Surface development of molecularly imprinted polymer films to enhance sensing signals

Exposure Studies of Different Kinds of Volatile Organic Compounds in Vapour Phase with a Narrow-gap Cell Containing CuxS Modified Carbon Microdisc Electrode

A new hydrogen cyanide chemiresistor gas sensor based on graphene quantum dots

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