CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction
The oxidation of pure H2 and H2/CO mixture (100 ppm CO) was investigated on Pt nanocatalyst supported on Ru0.7Ti0.3O2 (Pt /Ru0.7Ti0.3O2) by linear sweep voltammetry at a rotating disc electrode in 0.1 M HClO4. The results were compared with those on the commercial Pt/C catalyst. It was demonstrated...
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Engineering Society for Corrosion, Belgrade
2018-06-01
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| Series: | Zaštita Materijala |
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| Online Access: | https://www.zastita-materijala.org/index.php/home/article/view/439 |
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| author | Maja D. Obradović Snežana Lj. Gojković |
| author_facet | Maja D. Obradović Snežana Lj. Gojković |
| author_sort | Maja D. Obradović |
| collection | DOAJ |
| description | The oxidation of pure H2 and H2/CO mixture (100 ppm CO) was investigated on Pt nanocatalyst supported on Ru0.7Ti0.3O2 (Pt /Ru0.7Ti0.3O2) by linear sweep voltammetry at a rotating disc electrode in 0.1 M HClO4. The results were compared with those on the commercial Pt/C catalyst. It was demonstrated that Pt/Ru0.7Ti0.3O2 electrode possesses good conductivity and stability of the supports in the electrochemical experiments. The onset potential of COads oxidation on Pt/Ru0.7Ti0.3O2 is lower than Pt/C indicating that the Pt nanoparticles are in close contact with Ru atoms from support, which enable bifunctional mechanism and electronic effects to be operable. The influence of the poisoning of Pt/Ru0.7Ti0.3O2 and Pt/C catalyst by COads on the HOR was examined at several surface coverages ranging from 0 to 0.6. The decrease in HOR current on COads poisoned surface in low over-potential region of 0.05-0.50 V is less pronounced on Pt/Ru0.7Ti0.3O2 than on Pt/C. This is ascribed to a weakening of the Pt-CO interaction and consequently higher mobility of COads on Pt particles contacting Ru from the Ru0.7Ti0.3O2 support. |
| format | Article |
| id | doaj-art-0e381b4efe4041a082eef89b58e3a390 |
| institution | OA Journals |
| issn | 0351-9465 2466-2585 |
| language | English |
| publishDate | 2018-06-01 |
| publisher | Engineering Society for Corrosion, Belgrade |
| record_format | Article |
| series | Zaštita Materijala |
| spelling | doaj-art-0e381b4efe4041a082eef89b58e3a3902025-08-20T01:59:13ZengEngineering Society for Corrosion, BelgradeZaštita Materijala0351-94652466-25852018-06-0159226527210.5937/ZasMat1802265O438CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reactionMaja D. Obradović0Snežana Lj. Gojković1University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM, SerbiaUniversity of Belgrade, Faculty of Technology and Metallurgy, SerbiaThe oxidation of pure H2 and H2/CO mixture (100 ppm CO) was investigated on Pt nanocatalyst supported on Ru0.7Ti0.3O2 (Pt /Ru0.7Ti0.3O2) by linear sweep voltammetry at a rotating disc electrode in 0.1 M HClO4. The results were compared with those on the commercial Pt/C catalyst. It was demonstrated that Pt/Ru0.7Ti0.3O2 electrode possesses good conductivity and stability of the supports in the electrochemical experiments. The onset potential of COads oxidation on Pt/Ru0.7Ti0.3O2 is lower than Pt/C indicating that the Pt nanoparticles are in close contact with Ru atoms from support, which enable bifunctional mechanism and electronic effects to be operable. The influence of the poisoning of Pt/Ru0.7Ti0.3O2 and Pt/C catalyst by COads on the HOR was examined at several surface coverages ranging from 0 to 0.6. The decrease in HOR current on COads poisoned surface in low over-potential region of 0.05-0.50 V is less pronounced on Pt/Ru0.7Ti0.3O2 than on Pt/C. This is ascribed to a weakening of the Pt-CO interaction and consequently higher mobility of COads on Pt particles contacting Ru from the Ru0.7Ti0.3O2 support.https://www.zastita-materijala.org/index.php/home/article/view/439platinumruo2tio2hydrogen oxidationco tolerance |
| spellingShingle | Maja D. Obradović Snežana Lj. Gojković CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction Zaštita Materijala platinum ruo2 tio2 hydrogen oxidation co tolerance |
| title | CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction |
| title_full | CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction |
| title_fullStr | CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction |
| title_full_unstemmed | CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction |
| title_short | CO tolerant Pt/Ru0.7Ti0.3O2 nanocatalyst for hydrogen oxidation reaction |
| title_sort | co tolerant pt ru0 7ti0 3o2 nanocatalyst for hydrogen oxidation reaction |
| topic | platinum ruo2 tio2 hydrogen oxidation co tolerance |
| url | https://www.zastita-materijala.org/index.php/home/article/view/439 |
| work_keys_str_mv | AT majadobradovic cotolerantptru07ti03o2nanocatalystforhydrogenoxidationreaction AT snezanaljgojkovic cotolerantptru07ti03o2nanocatalystforhydrogenoxidationreaction |