期刊
ACS APPLIED ENERGY MATERIALS
卷 4, 期 11, 页码 12909-12916出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c02543
关键词
metal-organic frameworks; ZIF-67; 5-HMF; FDCA; oxidation; electrochemistry
资金
- Office of the Permanent Secretary, Ministry of Higher Education, Science, Research and Innovation, Thailand [RGNS 63-251]
- NANOTEC, NSTDA, Ministry of Science and Technology, Thailand, through its program of Research Network NANOTEC
- VISTEC's Frontier Research Center (FRC)
A ultrathin Co(OH)(2)@ZIF-67 electrocatalyst has been designed for high FDCA yield at low applied potential. The catalyst exhibits excellent catalytic performance and the reaction mechanism has been proposed based on analysis and calculations.
Electro-oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (FDCA) requires a high applied potential to achieve a high FDCA yield. In this work, ultrathin Co(OH)(2) on the ZIF-67 metal-organic framework has been designed as an efficient electrocatalyst for a high FDCA yield at a low applied potential. The obtained Co(OH)(2)@ZIF-67 electrocatalyst provides excellent catalytic performance with a 90.9% conversion, a 81.8% yield of FDCA, and 83.6% of faradaic efficiency. Importantly, the applied potential of the reaction has been reduced to 1.42 V (vs RHE), which is one of the lowest potentials among electrocatalysts developed for this reaction. The reaction mechanism has been proposed based on high-performance liquid chromatography analysis and DFT calculations, which reveal the importance of the 5-HMF binding mode on product selectivity. The synergistic effect from the Co(OH)(2) active surface and ZIF-67 porous support on the high catalytic efficiency has been investigated by electrochemical surface area and pore characteristic analysis to provide a better understanding on the catalyst.
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