Citation: Fang Bo, Liu Zong, Bao Yufei, Feng Ligang. Unstable Ni leaching in MOF-derived PtNi-C catalyst with improved performance for alcohols fuel electro-oxidation[J]. Chinese Chemical Letters, ;2020, 31(9): 2259-2262. doi: 10.1016/j.cclet.2020.02.045 shu

Unstable Ni leaching in MOF-derived PtNi-C catalyst with improved performance for alcohols fuel electro-oxidation

School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China

liuzonglz@126.com

ligang.feng@yzu.edu.cn

Received Date: 31 January 2020
Revised Date: 15 February 2020
Accepted Date: 20 February 2020
Available Online: 21 February 2020

Figures(6)

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.
- Methanol oxidation,
- Fuel cells,
- Electrocatalyst,
- PtNi,
- Metal organic frameworks
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