Macroporous platinum electrodes for hydrogen oxidation in ionic liquids
Macroporous platinum structures have been prepared by electrodeposition in the interstitial spaces between a 500 nm polystyrene sphere template, onto platinum and glassy carbon electrodes. The structures were analysed with scanning electron microscopy and confocal microscopy. These electrodes are em...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Elsevier Inc.
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP150101708 http://hdl.handle.net/20.500.11937/59316 |
| _version_ | 1848760446407933952 |
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| author | Hussain, G. Sofianos, M. Lee, J. Gibson, C. Buckley, C. Silvester, Debbie |
| author_facet | Hussain, G. Sofianos, M. Lee, J. Gibson, C. Buckley, C. Silvester, Debbie |
| author_sort | Hussain, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Macroporous platinum structures have been prepared by electrodeposition in the interstitial spaces between a 500 nm polystyrene sphere template, onto platinum and glassy carbon electrodes. The structures were analysed with scanning electron microscopy and confocal microscopy. These electrodes are employed for the electrochemical oxidation of hydrogen in the room temperature ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C 2 mim][NTf 2 ]). The behaviour on the porous electrodes showed obvious thin-layer characteristics in the cyclic voltammetry, with a strong tendency for hydrogen to accumulate and remain in the pores after being removed from the cell. Plots of peak current vs concentration (10–100% H 2 ) were linear, but currents continued to increase over time. The sensitivities (gradients) of the calibration plots were the highest for the platinum porous structures (compared to the bare, or nanoparticle-modified surfaces). Due to the accumulation of gas, such modified electrodes could be employed as leak-detectors for very low concentrations of hydrogen. |
| first_indexed | 2025-11-14T10:15:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-59316 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:15:54Z |
| publishDate | 2018 |
| publisher | Elsevier Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-593162022-10-12T04:58:10Z Macroporous platinum electrodes for hydrogen oxidation in ionic liquids Hussain, G. Sofianos, M. Lee, J. Gibson, C. Buckley, C. Silvester, Debbie Macroporous platinum structures have been prepared by electrodeposition in the interstitial spaces between a 500 nm polystyrene sphere template, onto platinum and glassy carbon electrodes. The structures were analysed with scanning electron microscopy and confocal microscopy. These electrodes are employed for the electrochemical oxidation of hydrogen in the room temperature ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C 2 mim][NTf 2 ]). The behaviour on the porous electrodes showed obvious thin-layer characteristics in the cyclic voltammetry, with a strong tendency for hydrogen to accumulate and remain in the pores after being removed from the cell. Plots of peak current vs concentration (10–100% H 2 ) were linear, but currents continued to increase over time. The sensitivities (gradients) of the calibration plots were the highest for the platinum porous structures (compared to the bare, or nanoparticle-modified surfaces). Due to the accumulation of gas, such modified electrodes could be employed as leak-detectors for very low concentrations of hydrogen. 2018 Journal Article http://hdl.handle.net/20.500.11937/59316 10.1016/j.elecom.2017.11.011 http://purl.org/au-research/grants/arc/DP150101708 http://purl.org/au-research/grants/arc/LE130100121 Elsevier Inc. fulltext |
| spellingShingle | Hussain, G. Sofianos, M. Lee, J. Gibson, C. Buckley, C. Silvester, Debbie Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title | Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title_full | Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title_fullStr | Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title_full_unstemmed | Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title_short | Macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| title_sort | macroporous platinum electrodes for hydrogen oxidation in ionic liquids |
| url | http://purl.org/au-research/grants/arc/DP150101708 http://purl.org/au-research/grants/arc/DP150101708 http://hdl.handle.net/20.500.11937/59316 |