Graphene and MOF Assembly Enhanced Fabrication and Functional Derivative via MOF Amorphization

Graphene and MOF Assembly : Enhanced Fabrication and Functional Derivative via MOF Amorphization

© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 19 vom: 15. Mai, Seite e2312797
1. Verfasser: Lin, Zeheng (VerfasserIn)
Weitere Verfasser: Han, Zhaojun, O'Connell, George E P, Wan, Tao, Zhang, Ding, Ma, Zhipeng, Chu, Dewei, Lu, Xunyu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article MOF amorphization electrocatalysis graphene graphene‐MOF assembly metal–organic frameworks (MOFs)
Beschreibung
Zusammenfassung:© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.
The integration of graphene and metal-organic frameworks (MOFs) has numerous implications across various domains, but fabricating such assemblies is often complicated and time-consuming. Herein, a one-step preparation of graphene-MOF assembly is presented by directly impregnating vertical graphene (VG) arrays into the zeolitic imidazolate framework (ZIF) precursors under ambient conditions. This approach can effectively assemble multiple ZIFs, including ZIF-7, ZIF-8, and ZIF-67, resulting in their uniform dispersion on the VG with adjustable sizes and shapes. Hydrogen defects on the VG surface are critical in inducing such high-efficiency ZIF assembly, acting as the reactive sites to interact with the ZIF precursors and facilitate their crystallisation. The versatility of VG-ZIF-67 assembly is further demonstrated by exploring the process of MOF amorphization. Surprisingly, this process leads to an amorphous thin-film coating formed on VG (named VG-IL-amZIF-67), which preserves the short-range molecular bonds of crystalline ZIF-67 while sacrificing the long-range order. Such a unique film-on-graphene architecture maintains the essential characteristics and functionalities of ZIF-67 within a disordered arrangement, making it well-suited for electrocatalysis. In electrochemical oxygen reduction, VG-IL-amZIF-67 exhibits exceptional activity, selectivity, and stability to produce H2O2 in acid media
Beschreibung:Date Revised 09.05.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202312797