Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction
The agglomeration of metal catalysts can limit the performance of fuel cells. Herein, an easy, scalable, one-pot microwave-assisted method is proposed to introduce guanine, which is a nucleobase found in deoxyribonucleic acid and ribonucleic acid, to the reduced graphene oxide-supported palladium vi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
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Elsevier
2019
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| _version_ | 1796960792912855040 |
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| author | Ng, Jen Chao Tan, Chou Yong Ong, Boon Hoong Matsuda, Atsunori Basirun, Wan Jefrey Tan, Wai Kian Ramesh, Singh Yap, Boon Kar |
| author_facet | Ng, Jen Chao Tan, Chou Yong Ong, Boon Hoong Matsuda, Atsunori Basirun, Wan Jefrey Tan, Wai Kian Ramesh, Singh Yap, Boon Kar |
| author_sort | Ng, Jen Chao |
| collection | UM |
| description | The agglomeration of metal catalysts can limit the performance of fuel cells. Herein, an easy, scalable, one-pot microwave-assisted method is proposed to introduce guanine, which is a nucleobase found in deoxyribonucleic acid and ribonucleic acid, to the reduced graphene oxide-supported palladium via noncovalent functionalization. Considering the abundant amino, amide, and imino functional groups of guanine that act as anchoring sites, palladium nanoparticles of various shapes such as triangular, rectangular, circular, and diamond are uniformly distributed. The guanine itself is revealed to be catalytically active toward methanol oxidation reaction, serving as second catalyst. Consequently, the as-produced nanocomposite has a larger electrochemically active surface area (111.98 m2 g−1 vs. 63.80 m2 g−1), greater methanol electro-oxidation ability (1017.42 mA mg−1 vs. 359.80 mA mg−1), and higher stability in alkaline medium than its counterpart without guanine. |
| first_indexed | 2024-03-06T05:49:58Z |
| format | Article |
| id | um.eprints-20020 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:49:58Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-200202019-01-17T01:31:19Z http://eprints.um.edu.my/20020/ Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction Ng, Jen Chao Tan, Chou Yong Ong, Boon Hoong Matsuda, Atsunori Basirun, Wan Jefrey Tan, Wai Kian Ramesh, Singh Yap, Boon Kar Q Science (General) QD Chemistry TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery The agglomeration of metal catalysts can limit the performance of fuel cells. Herein, an easy, scalable, one-pot microwave-assisted method is proposed to introduce guanine, which is a nucleobase found in deoxyribonucleic acid and ribonucleic acid, to the reduced graphene oxide-supported palladium via noncovalent functionalization. Considering the abundant amino, amide, and imino functional groups of guanine that act as anchoring sites, palladium nanoparticles of various shapes such as triangular, rectangular, circular, and diamond are uniformly distributed. The guanine itself is revealed to be catalytically active toward methanol oxidation reaction, serving as second catalyst. Consequently, the as-produced nanocomposite has a larger electrochemically active surface area (111.98 m2 g−1 vs. 63.80 m2 g−1), greater methanol electro-oxidation ability (1017.42 mA mg−1 vs. 359.80 mA mg−1), and higher stability in alkaline medium than its counterpart without guanine. Elsevier 2019 Article PeerReviewed Ng, Jen Chao and Tan, Chou Yong and Ong, Boon Hoong and Matsuda, Atsunori and Basirun, Wan Jefrey and Tan, Wai Kian and Ramesh, Singh and Yap, Boon Kar (2019) Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction. Materials Research Bulletin, 112. pp. 213-220. ISSN 0025-5408, DOI https://doi.org/10.1016/j.materresbull.2018.12.029 <https://doi.org/10.1016/j.materresbull.2018.12.029>. https://doi.org/10.1016/j.materresbull.2018.12.029 doi:10.1016/j.materresbull.2018.12.029 |
| spellingShingle | Q Science (General) QD Chemistry TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Ng, Jen Chao Tan, Chou Yong Ong, Boon Hoong Matsuda, Atsunori Basirun, Wan Jefrey Tan, Wai Kian Ramesh, Singh Yap, Boon Kar Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title | Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title_full | Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title_fullStr | Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title_full_unstemmed | Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title_short | Novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| title_sort | novel palladium guanine reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction |
| topic | Q Science (General) QD Chemistry TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery |
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