Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium
The article presents modified Pd-based catalysts supported on reduced graphene oxide (rGO), used in the electrooxidation reaction of ethanol in alkaline medium. When NaBH4 reducing agent was used, the random presence of Na was found out. According to this result, Na was used as a promoter of Pd-base...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/6842849 |
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| author | Minh Dang Nguyen Lien Thi Tran Quang Minh Nguyen Thao Thi Nguyen Thu Ha Thi Vu |
| author_facet | Minh Dang Nguyen Lien Thi Tran Quang Minh Nguyen Thao Thi Nguyen Thu Ha Thi Vu |
| author_sort | Minh Dang Nguyen |
| collection | DOAJ |
| description | The article presents modified Pd-based catalysts supported on reduced graphene oxide (rGO), used in the electrooxidation reaction of ethanol in alkaline medium. When NaBH4 reducing agent was used, the random presence of Na was found out. According to this result, Na was used as a promoter of Pd-based catalyst. Consequently, the Al-Si-Na addition not only assisted active phase Pd nanoparticles to disperse homogenously on graphene surport, but also contributed to increase catalytic activity in the reaction. This value, 16138 mA·mg−1Pd, is about 1.5 times higer than that of the catalyst modified by Al-Si. Moreover, the stability of the catalyst is enhanced more. The electrochemical stability of PASGN.N catalyst was relatively good: after 500 scanning cycles, the current density diminished 32% compared with the highest peak current density of the 15th cycle, which was chosen as a reference. These significant improvement results in electrooxidation of ethanol have opened up the high potential application of these catalysts in direct-ethanol fuel cell. |
| format | Article |
| id | doaj-art-3ea59c6b0aa946a4b2b0360867ddca1b |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-3ea59c6b0aa946a4b2b0360867ddca1b2025-02-03T01:31:50ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/68428496842849Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline MediumMinh Dang Nguyen0Lien Thi Tran1Quang Minh Nguyen2Thao Thi Nguyen3Thu Ha Thi Vu4Key Laboratory for Petrochemical and Refinery Technologies, No. 2, Pham Ngu Lao Street, Hoan Kiem District, Hanoi 100000, VietnamKey Laboratory for Petrochemical and Refinery Technologies, No. 2, Pham Ngu Lao Street, Hoan Kiem District, Hanoi 100000, VietnamKey Laboratory for Petrochemical and Refinery Technologies, No. 2, Pham Ngu Lao Street, Hoan Kiem District, Hanoi 100000, VietnamKey Laboratory for Petrochemical and Refinery Technologies, No. 2, Pham Ngu Lao Street, Hoan Kiem District, Hanoi 100000, VietnamKey Laboratory for Petrochemical and Refinery Technologies, No. 2, Pham Ngu Lao Street, Hoan Kiem District, Hanoi 100000, VietnamThe article presents modified Pd-based catalysts supported on reduced graphene oxide (rGO), used in the electrooxidation reaction of ethanol in alkaline medium. When NaBH4 reducing agent was used, the random presence of Na was found out. According to this result, Na was used as a promoter of Pd-based catalyst. Consequently, the Al-Si-Na addition not only assisted active phase Pd nanoparticles to disperse homogenously on graphene surport, but also contributed to increase catalytic activity in the reaction. This value, 16138 mA·mg−1Pd, is about 1.5 times higer than that of the catalyst modified by Al-Si. Moreover, the stability of the catalyst is enhanced more. The electrochemical stability of PASGN.N catalyst was relatively good: after 500 scanning cycles, the current density diminished 32% compared with the highest peak current density of the 15th cycle, which was chosen as a reference. These significant improvement results in electrooxidation of ethanol have opened up the high potential application of these catalysts in direct-ethanol fuel cell.http://dx.doi.org/10.1155/2019/6842849 |
| spellingShingle | Minh Dang Nguyen Lien Thi Tran Quang Minh Nguyen Thao Thi Nguyen Thu Ha Thi Vu Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium Journal of Chemistry |
| title | Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium |
| title_full | Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium |
| title_fullStr | Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium |
| title_full_unstemmed | Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium |
| title_short | Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium |
| title_sort | enhancing activity of pd based rgo catalysts by al si na addition in ethanol electrooxidation in alkaline medium |
| url | http://dx.doi.org/10.1155/2019/6842849 |
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