Rout, Chandra Sekhar ; Hegde, Manu ; Rao, C. N. R. (2008) H2S sensors based on tungsten oxide nanostructures Sensors and Actuators B: Chemical, 128 (2). pp. 488-493. ISSN 0925-4005
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09254...
Related URL: http://dx.doi.org/10.1016/j.snb.2007.07.013
Abstract
Nanoparticles and nanoplatelets of WO3 and nanowires of WO2.72 have been investigated for their H2S-sensing characteristics over the 1-1000 ppm concentration range at 40-250°C. The nanoparticles and nanoplatelets of WO3 exhibit response values of 757 and 1852, respectively to 1000 ppm H2S at 250°C, respectively, compared to the response of 3313 of the nanowires of WO2.72. Interestingly, the response of the nanowires is satisfactory (121) to 10 ppm H2S at 250°C, while a large response (240) is observed to 1000 ppm H2S even at 40°C. The WO2.72 nanowires emerge as a good candidate for H2S sensors, with little effect of humidity up to 60% relative humidity as well as satisfactory response and recovery times.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Nanostructures; Nanoparticles; Nanowires; Chemical Sensors |
| ID Code: | 42266 |
| Deposited On: | 02 Jun 2011 10:18 |
| Last Modified: | 02 Jun 2011 10:18 |
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