| Autor: |
Saravanan, Lakshmanan, Tseng, Chuan-Ming, Chang, Chia-Chia, Chung, Yi-Chen, Lin, Chiu-Yue, Lo, An-Ya |
| Jazyk: |
English<br />French |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Comptes Rendus. Chimie, Vol 23, Iss 4-5, Pp 343-356 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1878-1543 |
| DOI: |
10.5802/crchim.14 |
| Popis: |
A composite of highly dispersed Pt–RuO$_{\mathrm{u}}$–SnO$_{\mathrm{v}}$ nanoparticles (NPs) on a mesoporous carbon CMK-3 framework was synthesized. The resulting composites of Pt, RuO$_{\mathrm{u}}$, SnO$_{\mathrm{v}}$, and CMK-3 were designated PwRxSy/C3, and their microstructures and compositions were systematically characterized using a variety of techniques. The Pt-based NPs have average particle sizes of 2–8 nm and were well dispersed in the pore channels of the CMK-3 host. The methanol oxidation reaction (MOR) activity of the catalysts was investigated as a function of the Sn mass fraction. The electrochemical activity for the MOR improved with increasing Sn content in the Pt–Ru–Sn/CMK-3 composite. In short, MOR activity, CO tolerance, long-term stability, cyclic durability, and cost performance of our proposed composition were significantly improved, which renders efficient routes to developing catalysts for direct methanol fuel cells. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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