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Issue 12, 2018
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Direct visible light activation of a surface cysteine-engineered [NiFe]-hydrogenase by silver nanoclusters

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Abstract

Genetically engineering a cysteine (thiolate) close to the distal [4Fe–4S] cluster of a [NiFe]-hydrogenase creates a highly specific target for attachment of Ag nanoclusters templated in polymethyl acrylate, the resulting ‘hard-wired’ enzyme catalysing rapid hydrogen evolution by visible light. The rate is further enhanced by binding to metal oxide nanoparticles – results of investigations focusing on P-25 TiO2 and including anatase TiO2, rutile TiO2, ZnO, SrTiO3 and ZrO2 leading to the proposal that these act as active or structural scaffolds to promote intra-assembly electron transfer.

Graphical abstract: Direct visible light activation of a surface cysteine-engineered [NiFe]-hydrogenase by silver nanoclusters

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Supplementary files

Article information


Submitted
13 Aug 2018
Accepted
14 Sep 2018
First published
19 Oct 2018

This article is Open Access

Energy Environ. Sci., 2018,11, 3342-3348
Article type
Communication

Direct visible light activation of a surface cysteine-engineered [NiFe]-hydrogenase by silver nanoclusters

L. Zhang, S. E. Beaton, S. B. Carr and F. A. Armstrong, Energy Environ. Sci., 2018, 11, 3342
DOI: 10.1039/C8EE02361A

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