Electrochemically Functionalized Single‐Walled Carbon Nanotube Gas Sensor

Zhang, Ting; Nix, Megan; Yoo, Bongyoung; Deshusses, Marc A.; Myung, Nosang V.

doi:10.1002/elan.200603527

Cited by 264 publications

(159 citation statements)

References 20 publications

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“…Recent advances in nanotechnology have brought new possibilities to develop accurate, reliable, and portable chemical sensors, which may benefit a broad range of industries [5,6]. Among numerous tested systems, carbon nanostructures [7,8] and, in particular, carbon nanotubes (CNT) allow the preparation of highly sensitive sensors [9][10][11][12][13][14][15][16]. The molecules adsorbed on the CNT surfaces are sensed via changes of the CNT quasi-one-dimensional conductivity [17], but the approach is usually less specific, due to the nonspecific character of molecular binding to CNTs.…”

Section: Introductionmentioning

confidence: 99%

Configuration-sensitive molecular sensing on doped graphene sheets

Russell

2010

Nano Res.

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We show by molecular dynamics simulations that configuration-sensitive molecular spectroscopy can be realized on optimally doped graphene sheets vibrated by an oscillatory electric field. High selectivity of the spectroscopy is achieved by maximizing Coulombic binding between the detected molecule and a specific nest, formed for this molecule on the graphene sheet by substituting selected carbon atoms with boron and nitrogen dopants. One can detect binding of different isomers to the nest from the frequency shifts of selected vibrational modes of the combined system. As an illustrative example, we simulate detection of hexanitrostilbene enantiomers in chiral nests formed on graphene.

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Section: Introductionmentioning

confidence: 99%

Configuration-sensitive molecular sensing on doped graphene sheets

Russell

2010

Nano Res.

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“…Unfortunately, very few convincing results have been obtained. Only the work from Zhang et al led to very interesting results [40]. In this study, electrodeposition was used to functionalize SWNT-COOH networks with chloride-doped PANI for ammonia sensing.…”

Section: Polymer/metal Nanoparticle Hybrid Materialsmentioning

confidence: 95%

“…In the case of hybrid materials made of carbon and polymers, carbon has only the role of transducing element while the polymer imparts sensitivity, selectivity, and reversibility. Consequently, the response mechanism is not changed by the presence of carbon except if the latter has been previously functionalized [40]. …”

Section: Response Mechanismmentioning

confidence: 99%

Gas Sensors Based on Electrodeposited Polymers

Lakard

Carquigny

Segut

et al. 2015

Metals

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Electrochemically deposited polymers, also called "synthetic metals", have emerged as potential candidates for chemical sensing due to their interesting and tunable chemical, electrical, and structural properties. In particular, most of these polymers (including polypyrrole, polyaniline, polythiophene) and their derivatives can be used as the sensitive layer of conductimetric gas sensors because of their conducting properties. An important advantage of polymer-based gas sensors is their efficiency at room temperature. This characteristic is interesting since most of the commercially-available sensors, usually based on metal oxides, work at high temperatures (300-400 °C). Consequently, polymer-based gas sensors are playing a growing role in the improvement of public health and environment control because they can lead to gas sensors operating with rapid detection, high sensitivity, small size, and specificity in atmospheric conditions. In this review, the recent advances in electrodeposited polymer-based gas sensors are summarized and discussed. It is shown that the sensing characteristics of electrodeposited polymers can be improved by chemical functionalization, nanostructuration, or mixing with other functional materials to form composites or hybrid materials. OPEN ACCESSMetals 2015, 5 1372

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“…The PANI-SWCNT composite behavior has been tested in NH 3 , exhibiting a detection limit of 50 ppb. The response time at room temperature is of the order of minutes and the recovery time is a few hours [39].…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Conductometric Gas Nanosensors

2009

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This paper presents a review of the current research activities in the field of gas nanosensors. Nanomaterials are characterized by physical and chemical properties that differ from their macroscopic counterparts and, in particular, by an enhanced chemical reactivity even at room temperature. This effect has stimulated the development of chemical sensors based on several different nanomaterials. Here we focus most attention on carbon nanotubes, silicon and metal oxide nanoparticles and metal nanowires. After introducing a few general definitions a discussion on the fundamental properties of the nanostate used in the sensor field is presented and several nanosensors, based on the aforementioned nanomaterials, are discussed. Finally, some personal conclusions will be drawn.

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Electrochemically Functionalized Single‐Walled Carbon Nanotube Gas Sensor

Cited by 264 publications

References 20 publications

Configuration-sensitive molecular sensing on doped graphene sheets

Configuration-sensitive molecular sensing on doped graphene sheets

Gas Sensors Based on Electrodeposited Polymers

Conductometric Gas Nanosensors

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