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dc.contributor.author Mubeen, S
dc.contributor.author Zhang, T
dc.contributor.author Chartuprayoon, N
dc.contributor.author Rheem, Y
dc.contributor.author Mulchandani, A
dc.contributor.author Myung, NV
dc.contributor.author Deshusses, MA
dc.coverage.spatial United States
dc.date.accessioned 2011-06-21T17:22:07Z
dc.date.issued 2010-01-01
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/19968250
dc.identifier.citation Anal Chem, 2010, 82 (1), pp. 250 - 257
dc.identifier.uri http://hdl.handle.net/10161/3998
dc.description.abstract Herein, we demonstrate that highly sensitive conductometric gas nanosensors for H(2)S can be synthesized by electrodepositing gold nanoparticles on single-walled carbon nanotube (SWNT) networks. Adjusting the electrodeposition conditions allowed for tuning of the size and number of gold nanoparticles deposited. The best H(2)S sensing performance was obtained with discrete gold nanodeposits rather than continuous nanowires. The gas nanosensors could sense H(2)S in air at room temperature with a 3 ppb limit of detection. The sensors were reversible, and increasing the bias voltage reduced the sensor recovery time, probably by local Joule heating. The sensing mechanism is believed to be based on the modulation of the conduction path across the nanotubes emanating from the modulation of electron exchange between the gold and carbon nanotube defect sites when exposed to H(2)S.
dc.format.extent 250 - 257
dc.language ENG
dc.language.iso en_US en_US
dc.relation.ispartof Anal Chem
dc.relation.isversionof 10.1021/ac901871d
dc.subject Gold
dc.subject Hydrogen Sulfide
dc.subject Metal Nanoparticles
dc.subject Nanotubes, Carbon
dc.subject Sensitivity and Specificity
dc.title Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US
duke.date.pubdate 2010-1-1 en_US
duke.description.endpage 257 en_US
duke.description.issue 1 en_US
duke.description.startpage 250 en_US
duke.description.volume 82 en_US
dc.relation.journal Analytical Chemistry en_US
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/19968250
pubs.issue 1
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Institutes and Provost's Academic Units
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives/Energy Initiative
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/University Institutes and Centers
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/University Institutes and Centers/Global Health Institute
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Civil and Environmental Engineering
pubs.publication-status Published
pubs.volume 82
dc.identifier.eissn 1520-6882

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