期刊
APPLIED SURFACE SCIENCE
卷 608, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2022.155184
关键词
Metal-organic frameworks; Metal-phenolic networks; Oxygen evolution reaction; Electrochemistry
The interface nature of composite catalysts significantly affects the behavior of the oxygen evolution reaction (OER). In this study, nanoarchitecture consisting of Fe-based metal-organic frameworks (MIL-53) and metal-phenolic networks was created. The presence of MIL-53 enhanced the adsorption ability for OH center dot in the nanoarchitecture, and the electron transfer between MIL-53 and Ni-phenolic networks optimized the bonding strength between Fe3+/Ni2+ and oxygen intermediate species, resulting in improved OER performance.
The interface nature of composite catalysts affected drastically the oxygen evolution reaction (OER) behavior. In this paper, nanoarchitecture consisted of Fe-based metal-organic frameworks (MIL-53) and metal-phenolic networks were created. Metal (Mn2+, Co2+, and Ni2+) phenolic networks were assembled on the surface of MIL-53 to form heterostructures. Among them, MIL-53(Fe)/Ni-phenolic network nanoarchitectures revealed the best electrochemical performance. The existence of MIL-53 enhanced the adsorption ability for OH center dot in the nanoarchitectures. The electron transfer between MIL-53 and Ni-phenolic networks adjusted the filling degree of eg orbitals to optimize the bonding strength between Fe3+/Ni2+ and oxygen intermediate species. MIL-53/Ni-phenolic networks nanoarchitectures exhibited well OER performance with a potential of 282 mV at 10 mA cm(-2). This work provided an efficient insight into the structure-properties relation of a promising heterostructure catalyst for water splitting.
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