A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells
In this investigation, a spin-coated titanium oxide (TiOx, 60 nm thick with a porous morphology and mostly in anatase structure) modified platinum (Pt) catalyst was fabricated atop of a silicon (Si) substrate before annealing for the use as an efficient anodic catalyst for the methanol electro-oxida...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722022521 |
| _version_ | 1811159597848723456 |
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| author | Islam M. Al-Akraa Ahmad M. Mohammad |
| author_facet | Islam M. Al-Akraa Ahmad M. Mohammad |
| author_sort | Islam M. Al-Akraa |
| collection | DOAJ |
| description | In this investigation, a spin-coated titanium oxide (TiOx, 60 nm thick with a porous morphology and mostly in anatase structure) modified platinum (Pt) catalyst was fabricated atop of a silicon (Si) substrate before annealing for the use as an efficient anodic catalyst for the methanol electro-oxidation (MO). The temperature of annealing was optimized; seeking the highest catalytic activity and stability toward the MO. The PtTi-700 catalyst (that was annealed at 700 °C) showed the highest activity (with ca. 11-fold increase in the oxidation current density) and stability (ca. 19-fold increase after 50 cycles of potential scanning between −0.6 and 0.4 V vs. Ag/AgCl) if compared to the bare (unmodified) Pt electrode. The enhancement in the charge transfer kinetics and significant reduction of the catalyst’s poisoning could elaborate the origin of catalysis. |
| first_indexed | 2024-04-10T05:45:01Z |
| format | Article |
| id | doaj.art-21c42912b3b5497e850a24c20e4f44f5 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T05:45:01Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-21c42912b3b5497e850a24c20e4f44f52023-03-06T04:14:44ZengElsevierEnergy Reports2352-48472022-12-018438442A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cellsIslam M. Al-Akraa0Ahmad M. Mohammad1Department of Chemical Engineering, Faculty of Engineering, The British University in Egypt, Cairo 11837, Egypt; Corresponding authors.Chemistry Department, Faculty of Science, Cairo University, Cairo 12613, Egypt; Corresponding authors.In this investigation, a spin-coated titanium oxide (TiOx, 60 nm thick with a porous morphology and mostly in anatase structure) modified platinum (Pt) catalyst was fabricated atop of a silicon (Si) substrate before annealing for the use as an efficient anodic catalyst for the methanol electro-oxidation (MO). The temperature of annealing was optimized; seeking the highest catalytic activity and stability toward the MO. The PtTi-700 catalyst (that was annealed at 700 °C) showed the highest activity (with ca. 11-fold increase in the oxidation current density) and stability (ca. 19-fold increase after 50 cycles of potential scanning between −0.6 and 0.4 V vs. Ag/AgCl) if compared to the bare (unmodified) Pt electrode. The enhancement in the charge transfer kinetics and significant reduction of the catalyst’s poisoning could elaborate the origin of catalysis.http://www.sciencedirect.com/science/article/pii/S2352484722022521Fuel cellsMethanol electro-oxidationSpin-coatingPlatinumTitaniumCharge transfer |
| spellingShingle | Islam M. Al-Akraa Ahmad M. Mohammad A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells Energy Reports Fuel cells Methanol electro-oxidation Spin-coating Platinum Titanium Charge transfer |
| title | A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells |
| title_full | A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells |
| title_fullStr | A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells |
| title_full_unstemmed | A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells |
| title_short | A spin-coated TiOx-modified Pt anodic catalyst for the direct methanol fuel cells |
| title_sort | spin coated tiox modified pt anodic catalyst for the direct methanol fuel cells |
| topic | Fuel cells Methanol electro-oxidation Spin-coating Platinum Titanium Charge transfer |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722022521 |
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