Comparison of Hydrogen Sulfide Sensing Characteristics of Individual SnO2 Nanowire and SnO2 Sol-Gel Nanocomposite
| Autor: | Francisco Hernandez-Ramirez, F. Shao, Alexey V. Shaposhnik, Alexey Vasiliev, Natalia Meshkova, Stanislav V. Ryabtsev, D. A. Shaposhnik, Alexey Zviagin, Joan Ramon Morante |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Microscope Hydrogen sulfide Nanowire Nanotechnology 02 engineering and technology 010402 general chemistry Nanofabrication 01 natural sciences Focused ion beam law.invention Focused Ion Beam chemistry.chemical_compound Individual nanowire law Engineering(all) Sol-gel Nanocomposite Tin dioxide General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences Nanolithography chemistry 0210 nano-technology Sol-gel method |
| Zdroj: | Procedia Engineering. 47:1398-1401 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2012.09.418 |
| Popis: | SnO2 chemical sensors were fabricated by two different methods. The first one was based on contacting individual nanowires by in situ nanofabrication in a Focused Ion Beam (FIB) microscope. The second one, the traditional sol-gel method, was based on tin dioxide nanopowder thermal agglomeration. Both types of sensors were capable of detecting air-diluted H2S to the parts per million level. The responses to this gas were studied at different concentrations and operating temperatures, showing up reproducible characteristics. Their performances were discussed in relation to the accepted mechanisms for H2S sensing in n-type metal oxides. Investigations were made on sensitivity and device stability, demonstrating that these nanowires have some advantages in comparison with sol-gel sensors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|