H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter
In this work, we investigate the effect of HNO3 anodizing solution concentration ranging from 1.5 to 3 M on H2-sensing performance of 2D WO3 nanostructures prepared by anodizing sputtered tungsten films. The thickness of WO3 nanosheets was found to reduce while the crystallinity degraded with increa...
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| Format: | Article |
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MDPI AG
2017-08-01
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| Series: | Proceedings |
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| Online Access: | https://www.mdpi.com/2504-3900/1/4/466 |
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| author | Anurat Wisitsora-at Ditsayut Phokaratkul Kata Jaruwongrangsee Thitima M. Daniels Wojtek Wlodarski |
| author_facet | Anurat Wisitsora-at Ditsayut Phokaratkul Kata Jaruwongrangsee Thitima M. Daniels Wojtek Wlodarski |
| author_sort | Anurat Wisitsora-at |
| collection | DOAJ |
| description | In this work, we investigate the effect of HNO3 anodizing solution concentration ranging from 1.5 to 3 M on H2-sensing performance of 2D WO3 nanostructures prepared by anodizing sputtered tungsten films. The thickness of WO3 nanosheets was found to reduce while the crystallinity degraded with increasing HNO3 concentration. However, the nanosheets anodized in 2 M HNO3 exhibited the highest response of 43.4 to 1 vol % H2, which was one order of magnitude larger than those fabricated with other concentrations at the optimal operating temperature of 350 °C. In addition, the optimal nanostructures displayed good H2 selectivity against NO2, CH4, C2H2 and C2H5OH. |
| first_indexed | 2024-04-13T17:51:29Z |
| format | Article |
| id | doaj.art-5cbe37242f5a4bb982933ca0c9bd907d |
| institution | Directory Open Access Journal |
| issn | 2504-3900 |
| language | English |
| last_indexed | 2025-03-20T06:15:55Z |
| publishDate | 2017-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Proceedings |
| spelling | doaj.art-5cbe37242f5a4bb982933ca0c9bd907d2024-10-02T17:24:51ZengMDPI AGProceedings2504-39002017-08-011446610.3390/proceedings1040466proceedings1040466H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization ParameterAnurat Wisitsora-at0Ditsayut Phokaratkul1Kata Jaruwongrangsee2Thitima M. Daniels3Wojtek Wlodarski4Nanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, ThailandNanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, ThailandNanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, ThailandNanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, ThailandSchool of Engineering, RMIT University, Melbourne, VIC 3000, AustraliaIn this work, we investigate the effect of HNO3 anodizing solution concentration ranging from 1.5 to 3 M on H2-sensing performance of 2D WO3 nanostructures prepared by anodizing sputtered tungsten films. The thickness of WO3 nanosheets was found to reduce while the crystallinity degraded with increasing HNO3 concentration. However, the nanosheets anodized in 2 M HNO3 exhibited the highest response of 43.4 to 1 vol % H2, which was one order of magnitude larger than those fabricated with other concentrations at the optimal operating temperature of 350 °C. In addition, the optimal nanostructures displayed good H2 selectivity against NO2, CH4, C2H2 and C2H5OH.https://www.mdpi.com/2504-3900/1/4/466two-dimensional WO3semiconducting oxidehydrogen sensor |
| spellingShingle | Anurat Wisitsora-at Ditsayut Phokaratkul Kata Jaruwongrangsee Thitima M. Daniels Wojtek Wlodarski H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter Proceedings two-dimensional WO3 semiconducting oxide hydrogen sensor |
| title | H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter |
| title_full | H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter |
| title_fullStr | H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter |
| title_full_unstemmed | H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter |
| title_short | H2-Sensing Performance of 2D WO3 Nanostructure—Effect of Anodization Parameter |
| title_sort | h2 sensing performance of 2d wo3 nanostructure effect of anodization parameter |
| topic | two-dimensional WO3 semiconducting oxide hydrogen sensor |
| url | https://www.mdpi.com/2504-3900/1/4/466 |
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