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Modulating Electronic Structure of Metal-organic Frameworks by Introducing Atomically Dispersed Ru for Efficient Hydrogen Evolution

Overview
Journal Nat Commun
Specialty Biology
Date 2021 Mar 2
PMID 33649349
Citations 39
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Abstract

Developing high-performance electrocatalysts toward hydrogen evolution reaction is important for clean and sustainable hydrogen energy, yet still challenging. Herein, we report a single-atom strategy to construct excellent metal-organic frameworks (MOFs) hydrogen evolution reaction electrocatalyst (NiRu-BDC) by introducing atomically dispersed Ru. Significantly, the obtained NiRu-BDC exhibits outstanding hydrogen evolution activity in all pH, especially with a low overpotential of 36 mV at a current density of 10 mA cm in 1 M phosphate buffered saline solution, which is comparable to commercial Pt/C. X-ray absorption fine structures and the density functional theory calculations reveal that introducing Ru single-atom can modulate electronic structure of metal center in the MOF, leading to the optimization of binding strength for HO and H*, and the enhancement of HER performance. This work establishes single-atom strategy as an efficient approach to modulate electronic structure of MOFs for catalyst design.

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