A micromachined calorimetric gas sensor: an application of electrodeposited nanostructured palladium for the detection of combustible gases
Bartlett, Philip N. and Guerin, Samuel (2003) A micromachined calorimetric gas sensor: an application of electrodeposited nanostructured palladium for the detection of combustible gases. Analytical Chemistry, 75, (1), 126-132. (doi: 10.1021/ac026141w)
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Official URL: http://dx.doi.org/10.1021/ac026141w
Description/Abstract
Palladium films with regular nanoarchitectures were electrochemically deposited from the hexagonal (H1) lyotropic liquid crystalline phase of the nonionic surfactant octaethyleneglycol monohexadecyl ether (C16EO8) onto micromachined silicon hotplate structures. The H1-e Pd films were shown to have high surface areas (~28 m2 g-1) and to act as effective and stable catalysts for the detection of methane in air on heating to 500 °C. The response of the H1-e Pd-coated planar pellistors was found to be linearly proportional to the concentration of methane between 0 and 2.5% in air with a detection limit below 0.125%. Our results show that the electrochemical deposition of nanostructured metal films offers a promising approach to the fabrication of micromachined calorimetric gas sensors for combustible gases.
| Item Type: | Article |
|---|---|
| ISSN: | 0003-2700 (print) |
| Uncontrolled Keywords: | si-planar-pellistor, catalytic-oxidation, supported palladium, methane oxidation, high-sensitivity, metal-catalysts, platinum films, alumina, state, chemistry |
| Related URLs: | http://www.ncbi.nlm.nih.gov/en...med_docsum http://dx.doi.org/10.1021/ac026141w |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 19889 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19889 |
| Deposited On: | 23 Feb 2006 |
| Last Modified: | 01 Jun 2011 07:14 |
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