A Surfactant‐Free and Scalable General Strategy for Synthesizing Ultrathin Two‐Dimensional Metal–Organic Framework Nanosheets for the Oxygen Evolution Reaction. (8th August 2019)

• Record Type: Journal Article
• Authors: Zhuang, Linzhou; Ge, Lei; Liu, Hongli; Jiang, Zongrui; Jia, Yi; Li, Zhiheng; Yang, Dongjiang; Hocking, Rosalie K.; Li, Mengran; Zhang, Longzhou; Wang, Xin; Yao, Xiangdong; Zhu, Zhonghua
• Is Part Of: Angewandte Chemie. Volume 131:Number 38(2019)
• Page Start: 13699
• Page End: 13706
• Publication Date: 2019-08-08
• Subjects: Koordinativ ungesättigte Metallzentren -- Heterogene Katalyse -- Metall-organische Gerüstverbindungen -- Nanoschichten -- Sauerstoffentwicklung; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201907600
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Metal–organic framework (MOFs) two‐dimensional (2D) nanosheets have many coordinatively unsaturated metal sites that act as active centres for catalysis. To date, limited numbers of 2D MOFs nanosheets can be obtained through top‐down or bottom‐up synthesis strategies. Herein, we report a 2D oxide sacrifice approach (2dOSA) to facilely synthesize ultrathin MOF‐74 and BTC MOF nanosheets with a flexible combination of metal sites, which cannot be obtained through the delamination of their bulk counterparts (top‐down) or the conventional solvothermal method (bottom‐up). The ultrathin iron–cobalt MOF‐74 nanosheets prepared are only 2.6 nm thick. The sample enriched with surface coordinatively unsaturated metal sites, exhibits a significantly higher oxygen evolution reaction reactivity than bulk FeCo MOF‐74 particles and the state‐of‐the‐art MOF catalyst. It is believed that this 2dOSA could provide a new and simple way to synthesize various ultrathin MOF nanosheets for wide applications. Abstract : Denk schlank : Ein sogenannter 2D‐Opferoxid‐Ansatz wurde entwickelt, um Liganden an Metallzentren amorpher Metalloxid‐Nanoschichten zu koordinieren und so Nanoschichten von Metall‐organischen Gerüstverbindungen (MOF) zu synthetisieren. Aufgrund der hohen Anzahl an koordinativ ungesättigten Metallzentren und der Heteroatom‐Synergie zeigen die erhaltenen ultradünnen FeCo‐MOF‐74‐Schichten (2.6 nm) eine ausgezeichnete Aktivität in der Wasseroxidationskatalyse.