Faster response of NO2 sensing in graphene-WO3 nanocomposites
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Faster response of NO2 sensing in graphene-WO3 nanocomposites
|
|
| Creator |
Srivastava, Shubhda
Jain, Kiran Singh, V. N. Singh, Sukhvir Vijayan, N. Dilawar, Nita Gupta, Govind Senguttuvan, T. D. |
|
| Subject |
Materials Science
Applied Physics/Condensed Matter Nanoscience/ Nanotechnology |
|
| Description |
Graphene-based nanocomposites have proven to be very promising materials for gas sensing applications. In this paper, we present a general approach for the preparation of graphene-WO3 nanocomposites. Graphene-WO3 nanocomposite thin-layer sensors were prepared by drop coating the dispersed solution onto the alumina substrate. These nanocomposites were used for the detection of NO2 for the first time. TEM micrographs revealed that WO3 nanoparticles were well distributed on graphene nanosheets. Three different compositions (0.2, 0.5 and 0.1 wt%) of graphene with WO3 were used for the gas sensing measurements. It was observed that the sensor response to NO2 increased nearly three times in the case of graphene-WO3 nanocomposite layer as compared to a pure WO3 layer at room temperature. The best response of the graphene-WO3 nanocomposite was obtained at 250 degrees C.
|
|
| Publisher |
IOP Publishing
|
|
| Date |
2012-05-25
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/3567/1/Faster%20response%20of%20NO2%20sensing.pdf
Srivastava, Shubhda and Jain, Kiran and Singh, V. N. and Singh, Sukhvir and Vijayan, N. and Dilawar, Nita and Gupta, Govind and Senguttuvan, T. D. (2012) Faster response of NO2 sensing in graphene-WO3 nanocomposites. Nanotechnology, 23 (20). pp. 205501-205508. ISSN 0957-4484 |
|
| Relation |
http://npl.csircentral.net/3567/
|
|