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...

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Main Authors: Ng, Jen Chao, Tan, Chou Yong, Ong, Boon Hoong, Matsuda, Atsunori, Basirun, Wan Jefrey, Tan, Wai Kian, Ramesh, Singh, Yap, Boon Kar
Format: Article
Published: Elsevier 2019
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Online Access:http://eprints.um.edu.my/20020/
https://doi.org/10.1016/j.materresbull.2018.12.029
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Institution: Universiti Malaya
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spelling my.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 https://doi.org/10.1016/j.materresbull.2018.12.029 doi:10.1016/j.materresbull.2018.12.029
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
TA Engineering (General). Civil engineering (General)
TJ Mechanical engineering and machinery
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
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.
format Article
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
title 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_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_sort novel palladium-guanine-reduced graphene oxide nanocomposite as efficient electrocatalyst for methanol oxidation reaction
publisher Elsevier
publishDate 2019
url http://eprints.um.edu.my/20020/
https://doi.org/10.1016/j.materresbull.2018.12.029
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