金属有机骨架
沸石咪唑盐骨架
咪唑酯
材料科学
热解
蚀刻(微加工)
化学工程
吸附
纳米技术
化学
图层(电子)
有机化学
工程类
作者
Sujeong Lee,Sojin Oh,Moonhyun Oh
标识
DOI:10.1002/anie.201912986
摘要
The structural, compositional, and morphological features of metal-organic frameworks (MOFs) govern their properties and applications. Construction of hybrid MOFs with complicated structures, components, or morphologies is significant for the development of well-organized MOFs. An advanced route is reported for construction of atypical hybrid MOFs with unique morphologies and complicated components: 1) MOF-on-MOF growth of a 3D zeolitic imidazolate framework (ZIF) on a ZIF-L template, 2) etching of a part of the 2D ZIF-L template, and 3) structural transformation of 2D ZIF-L into 3D ZIF. The formation of core-shell-type MOF rings and plates is controlled by regulating the three processes. The formation route for the core-shell-type MOF rings and plates was monitored by tracking changes in morphology, structure, and composition. Carbon materials prepared from the pyrolysis of the core-shell-type hybrid MOFs displayed enhanced oxygen reduction reaction activities compared to their monomeric counterparts.
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