Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 5825m.shaffer

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

M221Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inbook{Pearce:2008:10.1007/978-3-540-79590-2-7,
author = {Pearce, RE and Andersson, M and Belmonte, J and Gracia, I and Stevens, MM and Buchholt, K and Shaw, J and Shaffer, MSP and Spetz, AL},
doi = {10.1007/978-3-540-79590-2-7},
pages = {85--99},
title = {A comparison of the gas sensing properties of purified and platinum decorated chemical vapour deposition grown multi walled carbon nanotubes},
url = {http://dx.doi.org/10.1007/978-3-540-79590-2-7},
year = {2008}
}

RIS format (EndNote, RefMan)

TY  - CHAP
AB - 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 NO 2 , NH 3 , CO and H 2 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. © 2008 Springer-Verlag Berlin Heidelberg.
AU - Pearce,RE
AU - Andersson,M
AU - Belmonte,J
AU - Gracia,I
AU - Stevens,MM
AU - Buchholt,K
AU - Shaw,J
AU - Shaffer,MSP
AU - Spetz,AL
DO - 10.1007/978-3-540-79590-2-7
EP - 99
PY - 2008///
SN - 9783540795896
SP - 85
TI - A comparison of the gas sensing properties of purified and platinum decorated chemical vapour deposition grown multi walled carbon nanotubes
UR - http://dx.doi.org/10.1007/978-3-540-79590-2-7
ER -