A classification and ranking system on the H2 gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations

Bonex W. Mwakikunga; Sarah Motshekga; Lucky Sikhwivhilu; Mathew Moodley; Manfred Scriba; Gerald Malgas; A. Simo; B. Sone; M. Maaza; Suprakas Sinha Ray

doi:10.1016/j.snb.2013.03.128

A classification and ranking system on the H₂ gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations

Bonex W. Mwakikunga, Sarah Motshekga, Lucky Sikhwivhilu, Mathew Moodley, Manfred Scriba, Gerald Malgas, A. Simo, B. Sone, M. Maaza, Suprakas Sinha Ray

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

A coefficient of performance is defined based on the traditional definitions of response, S, of a chemoresistive sensing material to a specific gas from resistance-time data. The new definition not only considers the S _response and S_recovery but also the temperature, T, and the relative humidity, H, at which the sensor operates and the response time, τ_res, and recovery time, τ_rec. Resistance-time data at various temperatures in a H₂ atmosphere for six samples of different materials, including WO₃ nanoparticles, SnO₂ nanoparticles, SnO₂ nanoparticles mixed with carbon nanotubes, TiO₂ nanorods, TiO₂ nanotubes and VO₂ nanobelts, are presented in this report. The VO₂ nanobelts were the best sensing materials when these materials were ranked according to the temperatures at which they operate; however, the SnO₂ nanoparticles are the superior sensing materials when they are ranked by the defined coefficient of performance.

Original language	English
Pages (from-to)	170-178
Number of pages	9
Journal	Sensors and Actuators B: Chemical
Volume	184
DOIs	https://doi.org/10.1016/j.snb.2013.03.128
Publication status	Published - 2013
Externally published	Yes

Keywords

Classification and ranking
Hydrogen gas sensing
Nanomaterials
Sensors performance and efficiency

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2013.03.128

Cite this

Mwakikunga, B. W., Motshekga, S., Sikhwivhilu, L., Moodley, M., Scriba, M., Malgas, G., Simo, A., Sone, B., Maaza, M., & Ray, S. S. (2013). A classification and ranking system on the H₂ gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations. Sensors and Actuators B: Chemical, 184, 170-178. https://doi.org/10.1016/j.snb.2013.03.128

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abstract = "A coefficient of performance is defined based on the traditional definitions of response, S, of a chemoresistive sensing material to a specific gas from resistance-time data. The new definition not only considers the S response and Srecovery but also the temperature, T, and the relative humidity, H, at which the sensor operates and the response time, τres, and recovery time, τrec. Resistance-time data at various temperatures in a H2 atmosphere for six samples of different materials, including WO3 nanoparticles, SnO2 nanoparticles, SnO2 nanoparticles mixed with carbon nanotubes, TiO2 nanorods, TiO2 nanotubes and VO2 nanobelts, are presented in this report. The VO2 nanobelts were the best sensing materials when these materials were ranked according to the temperatures at which they operate; however, the SnO2 nanoparticles are the superior sensing materials when they are ranked by the defined coefficient of performance.",

keywords = "Classification and ranking, Hydrogen gas sensing, Nanomaterials, Sensors performance and efficiency",

author = "Mwakikunga, {Bonex W.} and Sarah Motshekga and Lucky Sikhwivhilu and Mathew Moodley and Manfred Scriba and Gerald Malgas and A. Simo and B. Sone and M. Maaza and Ray, {Suprakas Sinha}",

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Mwakikunga, BW, Motshekga, S, Sikhwivhilu, L, Moodley, M, Scriba, M, Malgas, G, Simo, A, Sone, B, Maaza, M & Ray, SS 2013, 'A classification and ranking system on the H₂ gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations', Sensors and Actuators B: Chemical, vol. 184, pp. 170-178. https://doi.org/10.1016/j.snb.2013.03.128

A classification and ranking system on the H₂ gas sensing capabilities of nanomaterials based on proposed coefficients of sensor performance and sensor efficiency equations. / Mwakikunga, Bonex W.; Motshekga, Sarah; Sikhwivhilu, Lucky et al.
In: Sensors and Actuators B: Chemical, Vol. 184, 2013, p. 170-178.

Research output: Contribution to journal › Article › peer-review

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AU - Moodley, Mathew

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AU - Ray, Suprakas Sinha

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