A functional hydrogenase mimic that catalyzes robust H2 evolution spontaneously in aqueous environment

Although great progress has been made in improving hydrogen production, highly efficient catalysts, which are able to produce hydrogen in a fast and steady way at ambient temperature and pressure, are still in large demand. Here, we report a [NiCo]-based hydrogenase mimic, NiCo 2 O 4 nanozyme, that...

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Bibliographic Details
Published in:Nano research 2024-05, Vol.17 (5), p.3942-3949
Main Authors: Song, Ningning, Guo, Zhanjun, Wang, Shuo, Li, Yongli, Liu, Yunpeng, Zou, Meishuai, Liang, Minmin
Format: Article
Language:English
Subjects:
Aluminum
Ambient temperature
Aqueous environments
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Catalysts
Chemistry and Materials Science
Clean energy
Condensed Matter Physics
Electrons
Evolution
Hydrogen
Hydrogen evolution
Hydrogen production
Hydrogenase
Iron compounds
Materials Science
Nanotechnology
Nickel compounds
Research Article
Robustness
Room temperature
Water splitting
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Summary:Although great progress has been made in improving hydrogen production, highly efficient catalysts, which are able to produce hydrogen in a fast and steady way at ambient temperature and pressure, are still in large demand. Here, we report a [NiCo]-based hydrogenase mimic, NiCo 2 O 4 nanozyme, that can catalyze robust hydrogen evolution spontaneously in water without external energy input at room temperature. This hydrogenase nanozyme facilitates water splitting reaction by forming a three-center Ni–OH–Co bond analogous to the [NiFe]-hydrogenase reaction by using aluminum as electron donor, and realizes hydrogen evolution with a high production rate of 915 L·h −1 per gram of nanozymes, which is hundreds of times higher than most of the natural hydrogenase or hydrogenase mimics. Furthermore, the NiCo 2 O 4 nanozyme can robustly disrupt the adhesive oxidized layer of aluminum and enable the full consumption of electrons from aluminum. In contrast to the often-expensive synthetic catalysts that rely on rare elements and consume high energy, we envision that this NiCo 2 O 4 nanozyme can potentially provide an upgrade for current hydrogen evolution, accelerate the development of scale-up hydrogen production, and generate a clean energy future.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-023-6399-y