Journal article
Selective and Rapid Room Temperature Detection of H2S Using Gold Nanoparticle Chain Arrays
Electroanalysis (New York, N.Y.), Vol.23(11), pp.2623-2628
11/2011
DOI: 10.1002/elan.201100295
Abstract
A novel conductometric hydrogen sulfide (H2S) sensor was fabricated by AC dielectrophoretic assembly of amino acid mediated grown gold nanoparticles across microfabricated gold electrodes. Excellent sensing performance toward hydrogen sulfide, including a sensitivity of 29.84% ppm-1, a lower detection limit in the sub-ppm level, the upper detection limit of 2ppm, and a response time of<20s for 10ppm H2S was achieved at room temperature. In addition, excellent selectivity was demonstrated toward CO and SO2 with minimum interference from NH3. Enhanced sensor performance may be attributed to the use of amino acid capped gold nanoparticles compared to thiolated gold nanoparticles and optimized assembly conditions to control the density of gold nanoparticle chains and electron transport properties. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Details
- Title: Subtitle
- Selective and Rapid Room Temperature Detection of H2S Using Gold Nanoparticle Chain Arrays
- Creators
- Joun Lee - University of California, RiversideSyed Mubeen - University of California, RiversideCarlos M Hangarter - University of California, RiversideAshok Mulchandani - University of California, RiversideWilfred Chen - University of DelawareNosang V Myung - University of California, Riverside
- Resource Type
- Journal article
- Publication Details
- Electroanalysis (New York, N.Y.), Vol.23(11), pp.2623-2628
- Publisher
- WILEY-VCH Verlag
- DOI
- 10.1002/elan.201100295
- ISSN
- 1040-0397
- eISSN
- 1521-4109
- Number of pages
- 6
- Language
- English
- Date published
- 11/2011
- Academic Unit
- Chemical and Biochemical Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984197526002771
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