Co porphyrin-based metal-organic framework for hydrogen evolution reaction and oxygen reduction reaction

Constructing molecule@support composites is an attractive strategy to realize heterogeneous molecular electrocatalysis. Herein, we synthesized metal-organic framework (MOF)-supported molecular catalysts for hydrogen evolution and oxygen reduction reaction (HER/ORR). Ligand exchange strategy was used...

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Bibliographic Details
Published in:Chinese chemical letters 2022-08, Vol.33 (8), p.3999-4002
Main Authors: Liang, Zuozhong, Guo, Hongbo, Lei, Haitao, Cao, Rui
Format: Article
Language:English
Subjects:
Co porphyrin
Hydrogen evolution reaction (HER)
Metal-organic framework (MOF)
Molecular catalysis
Oxygen reduction reaction (ORR)
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Summary:Constructing molecule@support composites is an attractive strategy to realize heterogeneous molecular electrocatalysis. Herein, we synthesized metal-organic framework (MOF)-supported molecular catalysts for hydrogen evolution and oxygen reduction reaction (HER/ORR). Ligand exchange strategy was used to prepare molecule@support hybrids due to the same functional group. A series of hybrids were obtained using Co porphyrin (1) and different MOFs including MIL-88(Fe), MOF-5(NiCo) and UIO-66(Zr). The 1@MOF-5(NiCo) had the best HER and ORR activity compared with 1@MIL-88(Fe) and 1@MOF-5(NiCo). These hybrids also exhibited tunable selectivity for ORR with four-electron process, which can be attributed to the synergistic effect of porphyrin molecules and MOFs. This work provides a possibility for molecular catalysts to improve activity of HER and tune selectivity of ORR. A series of metal-organic framework-supported molecular catalysts were prepared for hydrogen evolution reaction and oxygen reduction reaction. [Display omitted]
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2021.11.055