dc.contributor.author |
Mubeen, Syed |
|
dc.contributor.author |
Zhang, Ting |
|
dc.contributor.author |
Chartuprayoon, Nicha |
|
dc.contributor.author |
Rheem, Youngwoo |
|
dc.contributor.author |
Mulchandani, Ashok |
|
dc.contributor.author |
Myung, Nosang V |
|
dc.contributor.author |
Deshusses, Marc A |
|
dc.coverage.spatial |
United States |
|
dc.date.accessioned |
2011-06-21T17:22:07Z |
|
dc.date.issued |
2010-01-01 |
|
dc.identifier |
https://www.ncbi.nlm.nih.gov/pubmed/19968250 |
|
dc.identifier.uri |
https://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.language |
eng |
|
dc.language.iso |
en_US |
|
dc.publisher |
American Chemical Society (ACS) |
|
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 |
|
|
dc.type |
Journal article |
|
duke.contributor.id |
Deshusses, Marc A|0486339 |
|
dc.description.version |
Version of Record |
|
duke.date.pubdate |
2010-1-1 |
|
duke.description.issue |
1 |
|
duke.description.volume |
82 |
|
dc.relation.journal |
Analytical Chemistry |
|
pubs.author-url |
https://www.ncbi.nlm.nih.gov/pubmed/19968250 |
|
pubs.begin-page |
250 |
|
pubs.end-page |
257 |
|
pubs.issue |
1 |
|
pubs.organisational-group |
Civil and Environmental Engineering |
|
pubs.organisational-group |
Duke |
|
pubs.organisational-group |
Pratt School of Engineering |
|
pubs.publication-status |
Published |
|
pubs.volume |
82 |
|
dc.identifier.eissn |
1520-6882 |
|