Abstract
The effect of Ag decoration on the gas sensing characteristics of SnO 2 nanowire (NW) networks was investigated. The Ag layers with thicknesses of 5-50 nm were uniformly coated on the surface of SnO2 NWs via e-beam evaporation, which were converted into isolated or continuous configurations of Ag islands by heat treatment at 450 °C for 2 h. The SnO2 NWs decorated by isolated Ag nano-islands displayed a 3.7-fold enhancement in gas response to 100 ppm C2H5OH at 450 °C compared to pristine SnO2 NWs. In contrast, as the Ag decoration layers became continuous, the response to C2H 5OH decreased significantly. The enhancement and deterioration of the C2H5OH sensing characteristics by the introduction of the Ag decoration layer were strongly governed by the morphological configurations of the Ag catalysts on SnO2 NWs and their sensitization mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 3140-3145 |
| Number of pages | 6 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 3 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2011 Aug 24 |
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Keywords
- Ag catalyst
- electronic sensitization
- gas sensor
- SnOnanowires
ASJC Scopus subject areas
- Materials Science(all)
- Medicine(all)
Cite this
Facile control of C2H5OH sensing characteristics by decorating discrete Ag nanoclusters on SnO2 nanowire networks. / Hwang, In Sung; Choi, Joong Ki; Woo, Hyung Sik; Kim, Sun Jung; Jung, Se Yeon; Seong, Tae Yeon; Kim, Il Doo; Lee, Jong Heun.
In: ACS Applied Materials and Interfaces, Vol. 3, No. 8, 24.08.2011, p. 3140-3145.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Facile control of C2H5OH sensing characteristics by decorating discrete Ag nanoclusters on SnO2 nanowire networks
AU - Hwang, In Sung
AU - Choi, Joong Ki
AU - Woo, Hyung Sik
AU - Kim, Sun Jung
AU - Jung, Se Yeon
AU - Seong, Tae Yeon
AU - Kim, Il Doo
AU - Lee, Jong Heun
PY - 2011/8/24
Y1 - 2011/8/24
N2 - The effect of Ag decoration on the gas sensing characteristics of SnO 2 nanowire (NW) networks was investigated. The Ag layers with thicknesses of 5-50 nm were uniformly coated on the surface of SnO2 NWs via e-beam evaporation, which were converted into isolated or continuous configurations of Ag islands by heat treatment at 450 °C for 2 h. The SnO2 NWs decorated by isolated Ag nano-islands displayed a 3.7-fold enhancement in gas response to 100 ppm C2H5OH at 450 °C compared to pristine SnO2 NWs. In contrast, as the Ag decoration layers became continuous, the response to C2H 5OH decreased significantly. The enhancement and deterioration of the C2H5OH sensing characteristics by the introduction of the Ag decoration layer were strongly governed by the morphological configurations of the Ag catalysts on SnO2 NWs and their sensitization mechanism.
AB - The effect of Ag decoration on the gas sensing characteristics of SnO 2 nanowire (NW) networks was investigated. The Ag layers with thicknesses of 5-50 nm were uniformly coated on the surface of SnO2 NWs via e-beam evaporation, which were converted into isolated or continuous configurations of Ag islands by heat treatment at 450 °C for 2 h. The SnO2 NWs decorated by isolated Ag nano-islands displayed a 3.7-fold enhancement in gas response to 100 ppm C2H5OH at 450 °C compared to pristine SnO2 NWs. In contrast, as the Ag decoration layers became continuous, the response to C2H 5OH decreased significantly. The enhancement and deterioration of the C2H5OH sensing characteristics by the introduction of the Ag decoration layer were strongly governed by the morphological configurations of the Ag catalysts on SnO2 NWs and their sensitization mechanism.
KW - Ag catalyst
KW - electronic sensitization
KW - gas sensor
KW - SnOnanowires
UR - http://www.scopus.com/inward/record.url?scp=81255123976&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=81255123976&partnerID=8YFLogxK
U2 - 10.1021/am200647f
DO - 10.1021/am200647f
M3 - Article
VL - 3
SP - 3140
EP - 3145
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 8
ER -