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.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | Frontier Research Grant grant number FG0011-17AFR, Postgraduate Research Grant (PPP) grant number PG207-2015A, Talent Fund of South China University of Technology and Nippon Sheet Glass Foundation for Materials Science and Engineering (NSG Foundation) research grant no. IF014-2017, AUN/SEED-Net, JICA, University of Malaya and the Ministry of Higher Education Malaysia |
| Uncontrolled Keywords: | A. Graphene; A. Palladium nanoparticles; A. Guanine; B. Noncovalent functionalization; D. Methanol oxidation reaction |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering Faculty of Science > Department of Chemistry Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Jan 2019 01:31 |
| Last Modified: | 17 Jan 2019 01:31 |
| URI: | http://eprints.um.edu.my/id/eprint/20020 |
Actions (login required)
 |
View Item |
