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Engineering efficient and cost-effective electrocatalysts for the oxygen evolution reaction (OER) is an essential part of electrochemical water splitting.

The review article discusses the recent progress of MOFs and MOF-derived materials, and the challenges in electrocatalytic water splitting.

We report the design and synthesis of an imine-based twodimensional covalent organic framework (2D COF) with a novel brickwall topology by judiciously choosing a tritopic T-shaped building block and a ditopic linear linker. Unlike the main body of COF frameworks reported to-date, which consists of higher-symmetry 2D topologies, the unconventional layered brick-wall topology have only been proposed but never been realized experimentally. The brick-wall structure was characterized by powder X-ray diffraction analysis, FT-IR, solid state 13 C NMR spectroscopy, nitrogen, and carbon oxide adsorption−desorption measurements as well as theoretical simulations. Our present work opens the door to the design of novel 2D COFs and will broaden the scope of emerging COF materials.

A hydrogen-bonded organic framework (HOF-8) was utilized as a precursor to prepare carbon-based oxygen reduction reaction (ORR) catalysts.