| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
2010 Functional and Structural Nanomaterials: Fabrication, Properties, Applications and Implications
|
| Presentation Title |
Carbon Dioxide Gas Sensing Properties of Cosb2O6 Prepared by a Colloidal Method |
| Author(s) |
Hector Guillen-Bonilla, Carlos Rafael Michel, Juan Moran, Juan Reyes, Dario Pozas |
| On-Site Speaker (Planned) |
Hector Guillen-Bonilla |
| Abstract Scope |
CoSb<SUB>2</SUB>O<SUB>6</SUB> has a singnificant response in gas detection (CO<SUB>2</SUB>). In order to improve its gas sensing properties it is necessary to have a better control on the size and shape of the particles. The colloidal methods are effective to control the microstructure inorganic materials. In this work CoSb<SUB>2</SUB>O<SUB>6</SUB> was synthesized by the colloidal method. Single-phase CoSb<SUB>2</SUB>O<SUB>6</SUB> was obtained after a calcination at 600 °C in air; the crystal structure was identified by XRD. By SEM the formation of microcolumns was observed. These particles had a length between 10 to 29 μm. CoSb<SUB>2</SUB>O<SUB>6</SUB> thick-films were tested as gas sensors. The electrical characterization was performed in alternating current (AC) in air and CO<SUB>2</SUB>, at frequencies: 100 Hz, 1 kHz and 100 kHz. At 200 ºC, the change of the magnitude of the impedance (Z) was 246 to 249 KΩ. The results indicated that CoSb<SUB>2</SUB>O<SUB>6</SUB> would be a CO<SUB>2</SUB> gas sensing material. |
| Proceedings Inclusion? |
Undecided |