Journal
CHINESE CHEMICAL LETTERS
Volume 31, Issue 9, Pages 2259-2262Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2020.02.045
Keywords
Methanol oxidation; Fuel cells; Electrocatalyst; PtNi; Metal-organic frameworks
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Funding
- National Natural Science Foundation of China [21603041, 21972124]
- Priority Academic Program Development of Jiangsu Higher Education Institution
- Foundation of Excellent Doctoral Dissertation of Yangzhou University
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Significance of unstable species leaching was for the first time demonstrated on MOF-derived catalysts by taking PtNi-C as an example, that was instructive for the relevant catalyst fabrication and performance study. PtNi-C catalyst was synthesized by combining Pt nanoparticles with Ni-BTC after annealing in the tube furnace and the unstable Ni species can be easily leached out in nitric acid, and the stable PtNi nanoparticles trapped in the graphite carbon layer were obtained. The greatly improved catalytic ability for alcohol fuels oxidation was verified by comparing the fresh and acid leached catalysts in terms of the high peak current density, specific and mass activity and rapid charge transfer kinetics and high catalytic stability. The current work guides the importance of unstable assistant promoter removal for the MOF derived catalysts. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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