Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction
Anodes; Cathodes; Direct methanol fuel cells (DMFC); Electrocatalysts; Electrolysis; Fuel cells; Methanol; Methanol fuels; Nanocatalysts; Nucleation; Oxidation; Palladium; Catalyst nano particles; Catalytic performance; Electrochemical active surface areas; Methanol oxidation reactions; Microwave as...
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2023
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my.uniten.dspace-248002023-05-29T15:27:16Z Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction Ng J.C. Tan C.Y. Ong B.H. Matsuda A. Basirun W.J. Tan W.K. Singh R. Yap B.K. 57194408700 16029485400 7102342460 57089738800 35550587900 57216683664 41061958200 26649255900 Anodes; Cathodes; Direct methanol fuel cells (DMFC); Electrocatalysts; Electrolysis; Fuel cells; Methanol; Methanol fuels; Nanocatalysts; Nucleation; Oxidation; Palladium; Catalyst nano particles; Catalytic performance; Electrochemical active surface areas; Methanol oxidation reactions; Microwave assisted reduction; Microwave synthesis; Nucleation and growth; Reduced graphene oxides; Graphene In spite of advantages of direct methanol fuel cells, low methanol oxidation reaction and fuel crossover from anode to cathode, there remains a challenge that inhibits it from being commercialized. Active electrocatalysts are in high demand to promote the methanol oxidation reaction. The methanol reached at the anode can be immediately reacted, and thus, less methanol to cross to the cathode. The performance of electrocatalysts can be significantly influenced by varying the concentration of precursor solution. Theoretically, concentrated precursor solution facilitates rapid nucleation and growth; diluted precursor solution causes slow nucleation and growth. Rapid nucleation and slow growth have positive effect on the size of electrocatalysts which plays a significant role in the catalytic performance. Upon the addition of appropriate concentration of graphene oxide, the graphene oxide was reported to have stabilizing effect towards the catalyst nanoparticles. This work synthesized reduced graphene oxide�supported palladium electrocatalysts at different concentrations (0.5, 1.0, 2.0, 3.0 and 4.0 mg mL ?1 ) with fixed volume and mass ratio of reduced graphene oxide to palladium by microwave-assisted reduction method. Results showed that reduced graphene oxide�supported palladium synthesized at a concentration of 1.0 mg mL ?1 gave the best methanol oxidation reactivity (405.37 mA mg ?1 ) and largest electrochemical active surface area (83.57 m 2 g ?1 ). � The Author(s) 2019. Final 2023-05-29T07:27:16Z 2023-05-29T07:27:16Z 2019 Article 10.1177/1847980419827171 2-s2.0-85061182887 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061182887&doi=10.1177%2f1847980419827171&partnerID=40&md5=e0b68176198870e6a11c3fef217b69a4 https://irepository.uniten.edu.my/handle/123456789/24800 9 All Open Access, Gold SAGE Publications Ltd Scopus |
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Anodes; Cathodes; Direct methanol fuel cells (DMFC); Electrocatalysts; Electrolysis; Fuel cells; Methanol; Methanol fuels; Nanocatalysts; Nucleation; Oxidation; Palladium; Catalyst nano particles; Catalytic performance; Electrochemical active surface areas; Methanol oxidation reactions; Microwave assisted reduction; Microwave synthesis; Nucleation and growth; Reduced graphene oxides; Graphene |
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57194408700 |
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57194408700 Ng J.C. Tan C.Y. Ong B.H. Matsuda A. Basirun W.J. Tan W.K. Singh R. Yap B.K. |
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Article |
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Ng J.C. Tan C.Y. Ong B.H. Matsuda A. Basirun W.J. Tan W.K. Singh R. Yap B.K. |
| spellingShingle |
Ng J.C. Tan C.Y. Ong B.H. Matsuda A. Basirun W.J. Tan W.K. Singh R. Yap B.K. Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| author_sort |
Ng J.C. |
| title |
Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| title_short |
Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| title_full |
Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| title_fullStr |
Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| title_full_unstemmed |
Nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| title_sort |
nucleation and growth controlled reduced graphene oxide�supported palladium electrocatalysts for methanol oxidation reaction |
| publisher |
SAGE Publications Ltd |
| publishDate |
2023 |
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1806423227771125760 |