Abstract
Multi walled carbon nanotubes (MWCNTs) are known to respond well to a range of gases and vapours. Metallic additives are often introduced to improve the sensitivity and selectivity to some gases. Here the difference in response between MWCNT sensors with and without a metal additive is discussed for a range of gases. Resistive sensors fabricated from chemical vapour deposition (CVD) grown multi walled carbon nanotubes (MWCNTs) collected between gold microelectrodes by di-electrophoresis are presented as a cheap, scaleable and facile method of producing carbon nanotube gas sensors. The MWCNTs sensors were exposed to a series of test gases including NO2, NH3, CO and H2 and exhibited low ppm. detection at room temperature. Increasing the temperature not only reduced the recovery time of the sensors, but also increased the sensitivity to some gases whilst a decrease in the sensitivity was seen for other gases. A method for decorating MWCNTs with nanometer sized Pt particles is presented and compared as a sensing material to purified MWCNTs which have undergone acid reflux and base washing. The role of defects and the sensing mechanisms are discussed.
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References
Andrews R, Jacques D, Rao AM, Derbyshire F, Qian D, Fan X, (1999) Continuous production of aligned carbon nanotubes: a step closer to commercial realization. Chem Phys Lett 303, 5–6:467–74
Bond GC, Molloy LR, Fuller MJ, (1975) Oxidation of carbon monoxide over palladium–Tin_IV. oxide catalysts: an example of spillover catalysis. Chem Commun: 796–797
Cabot A, Arbiol J, Morante J, Weimar U, Bârsan N, Göpel W, (2000) Analysis of the noble metal catalytic additives introduced by impregnation of as obtained SnO sol–gel nanocrystals for gas sensors. Sensors and Actuators B 70:87–100
Cheng A, Steele WA, (1990) Computer simulation of ammonia on graphite. II. Monolayer melting. J Chem Phys 92:3867–3874
Feng X, Irle S, Witek H, Morokuma K, Vidic R, Borguet E (2005) Sensitivity of ammonia interaction with single-walled carbon nanotube bundles to the presence of defect sites and functionalities. J Am Chem Soc 127, 30:10533–10538
Hu H, Zhao M, Itkis ME, Haddon RC, (2003) Nitric acid purification of single walled carbon nanotubes. J Phys Chem B 107:13838–13842
Kong J, Chapline M, Dai H, (2001) Functionalized carbon nanotubes for molecular hydrogen sensors, Adv Mater 13, 18:384–1386
Kong J, Franklin NR, Zhou C, Chapline MG, Peng S, Cho K, Dai H, (2000) Nanotube Molecular Wires as Chemical Sensors. Science 287:622–625
Kombarakkaran J, Pietraß T, (2008) Electron spin resonance studies of hydrogen adsorption on single-walled carbon nanotubes. Chem Phys Lett 452, 1–3:152–155
Krupke R, Hennrick F, vLöhenysen H, Kappes MM, (2003) Separation of metallic from semiconducting single-walled carbon nanotubes. Science 301:344–347
Mieher WD, Ho W (1995) Thermally activated oxidation of NH3 on Pt(111): intermediate species and reaction mechanisms. Surface Sci 322, 1–3:151–167
Pearce R, Belmonte J, Shaw J, Andersson M, Buckhholt K, Lloyd Spetz A, Shaffer M, (2007) The effect of temperature on the gas sensing properties of CVD grown MWCNTs in: 2nd International Conference on Sensing Technology, Palmerston North, New Zealand pp 455–460
Santucci S, Picozzi S, Digregorio F and Lozzi L (2003) NO2 and CO gas adsorption on carbon nanotubes Experiment and theory. J Chem Phys 119 20:10904–10910
Schedin F, Geim AK, Morozov SV, Hill EW, Blake P, Katsnelson MI, Novoselov KS, (2007) Detection of individual gas molecules adsorbed on graphene, Nat Mat 6:652–655
Singh C, Shaffer MS, Windle AH, (2003) Production of controlled architectures of aligned carbon nanotubes by an injection chemical vapour deposition method. Carbon 41:359–368
Suehiro J, Zhou G, Hara M, (2003) Fabrication of a carbon nanotubes-based gas sensor using dielectrophoresis and its application for ammonia detection by impedance spectroscopy. J Phys D; Appl Phys 36:109–114
Verdejo R, Lamoriniere S, Cottam B, Bismarck A, Shaffer M, (2007) Removal of oxidation debris from multi-walled carbon nanotubes. Chem Commun:513–515
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Pearce, R. et al. (2008). A Comparison of the Gas Sensing Properties of Purified and Platinum Decorated Chemical Vapour Deposition Grown Multi Walled Carbon Nanotubes. In: Mukhopadhyay, S.C., Gupta, G.S. (eds) Smart Sensors and Sensing Technology. Lecture Notes Electrical Engineering, vol 20. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79590-2_7
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DOI: https://doi.org/10.1007/978-3-540-79590-2_7
Publisher Name: Springer, Berlin, Heidelberg
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