Gasochromic response of Pd/NiO nanostructured film towards hydrogen.
The gasochromic performance of nanostructured nickel oxide (NiO) films coated with 25 Å catalytic palladium (Pd) layer were investigated for low concentration hydrogen (H 2) sensing. NiO nanostructures of 20-30 nm sizes were produced via RF sputtering deposition of NiO x on quartz substrates and sub...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Scientific Publishers
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23501/1/Gasochromic%20response%20of%20Pd%20NiO%20nanostructured%20film%20towards%20hydrogen..pdf http://psasir.upm.edu.my/id/eprint/23501/ http://www.aspbs.com/ |
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| Summary: | The gasochromic performance of nanostructured nickel oxide (NiO) films coated with 25 Å catalytic palladium (Pd) layer were investigated for low concentration hydrogen (H 2) sensing. NiO nanostructures of 20-30 nm sizes were produced via RF sputtering deposition of NiO x on quartz substrates and subsequently annealed at 500 °C. It was found that the Pd/NiO films show significant gasochromic response when exposed to H 2 at elevated temperatures. Integrating the absorbance change over a range of visible wavelengths (500-800 nm), has enabled very low concentrations of H 2 (0.06%) to be sensed in real time. T 90% response of 25 Å Pd/100 nm NiO film towards 0.06% H 2 in a balance of synthetic air was approximately 120 s at 170 °C. Similar H 2 concentration can be recovered in as little as 240 s at 170 °C. |
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