Journal
ACS APPLIED NANO MATERIALS
Volume 5, Issue 6, Pages 8089-8096Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c01234
Keywords
methanol oxidation; CoPt nanowires; electrodeposition; electrocatalysts; AAO template; catalytic stability
Funding
- Romanian Ministry of Research, Innovation, and Digitalization under the NUCLEU programme [PN 19 28 01 01]
Ask authors/readers for more resources
CoPt nanowires with low Pt content and optimized catalytic properties for methanol oxidation reaction (MOR) were successfully synthesized by electrodeposition. By controlling the synthesis conditions and adding saccharine, the crystalline structure of the nanowires can be changed, leading to improved electrocatalytic performance. The resulting CoPt nanowires exhibit significantly higher catalytic activity than the best reported CoPt nanoparticles, making them promising catalyst candidates for MOR.
CoPt nanowires with low Pt content and optimized catalytic properties for the methanol oxidation reaction (MOR) are synthetized by electrodeposition, and their morphology and composition are investigated. By controlling the synthesis conditions, an increase in the Co concentration from 7% up to 90% is achieved, thus leading to a reduced Pt content. Saccharine was used to control the crystalline structure of the CoPt nanowires. X-ray diffraction investigations revealed that the face-centered cubic crystalline structure transforms into the hcp crystalline structure when saccharine is added into the electrochemical bath. The electrocatalytic performance of CoPt nanowires increases even though the Pt content in the samples decreases due to the change in the crystalline structure. A dramatic increase in the catalytic activity is obtained, from 10 to 85 mA cm(-2) (almost two times higher than the best value reported in the literature on CoPt nanoparticles), making these nanowires the best catalyst candidates for the MOR.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available