The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing
The current work presents the results of an experimental study of the effects of the location of gold additives on the performance of combustion-generated tin dioxide (SnO2) nanopowders in solid state gas sensors. The time response and sensor response to 500 ppm carbon monoxide is reported for a ran...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2010-07-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/10/7/7002/ |
| _version_ | 1828392960089128960 |
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| author | Smitesh D. Bakrania Margaret S. Wooldridge |
| author_facet | Smitesh D. Bakrania Margaret S. Wooldridge |
| author_sort | Smitesh D. Bakrania |
| collection | DOAJ |
| description | The current work presents the results of an experimental study of the effects of the location of gold additives on the performance of combustion-generated tin dioxide (SnO2) nanopowders in solid state gas sensors. The time response and sensor response to 500 ppm carbon monoxide is reported for a range of gold additive/SnO2 film architectures including the use of colloidal, sputtered, and combustion-generated Au additives. The opportunities afforded by combustion synthesis to affect the SnO2/additive morphology are demonstrated. The best sensor performance in terms of sensor response (S) and time response (t) was observed when the Au additives were restricted to the outermost layer of the gas-sensing film. Further improvement was observed in the sensor response and time response when the Au additives were dispersed throughout the outermost layer of the film, where S = 11.3 and t = 51 s, as opposed to Au localized at the surface, where S = 6.1 and t = 60 s. |
| first_indexed | 2024-12-10T07:29:32Z |
| format | Article |
| id | doaj.art-5d9c3eb649cb4d77a29a4ef074b029a4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T07:29:32Z |
| publishDate | 2010-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5d9c3eb649cb4d77a29a4ef074b029a42022-12-22T01:57:36ZengMDPI AGSensors1424-82202010-07-011077002701710.3390/s100707002The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas SensingSmitesh D. BakraniaMargaret S. WooldridgeThe current work presents the results of an experimental study of the effects of the location of gold additives on the performance of combustion-generated tin dioxide (SnO2) nanopowders in solid state gas sensors. The time response and sensor response to 500 ppm carbon monoxide is reported for a range of gold additive/SnO2 film architectures including the use of colloidal, sputtered, and combustion-generated Au additives. The opportunities afforded by combustion synthesis to affect the SnO2/additive morphology are demonstrated. The best sensor performance in terms of sensor response (S) and time response (t) was observed when the Au additives were restricted to the outermost layer of the gas-sensing film. Further improvement was observed in the sensor response and time response when the Au additives were dispersed throughout the outermost layer of the film, where S = 11.3 and t = 51 s, as opposed to Au localized at the surface, where S = 6.1 and t = 60 s.http://www.mdpi.com/1424-8220/10/7/7002/SnO2gas sensoradditivesgoldcombustion synthesis |
| spellingShingle | Smitesh D. Bakrania Margaret S. Wooldridge The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing Sensors SnO2 gas sensor additives gold combustion synthesis |
| title | The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing |
| title_full | The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing |
| title_fullStr | The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing |
| title_full_unstemmed | The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing |
| title_short | The Effects of the Location of Au Additives on Combustion-generated SnO2 Nanopowders for CO Gas Sensing |
| title_sort | effects of the location of au additives on combustion generated sno2 nanopowders for co gas sensing |
| topic | SnO2 gas sensor additives gold combustion synthesis |
| url | http://www.mdpi.com/1424-8220/10/7/7002/ |
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