CO2 photoreduction at enzyme-modified metal oxide nanoparticles

Thomas W. Woolerton; Sally Sheard; Elizabeth Pierce; Stephen W. Ragsdale; Fraser A. Armstrong

doi:10.1039/C0EE00780C

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

CO₂ photoreduction at enzyme-modified metal oxidenanoparticles†

Thomas W. Woolerton,^a Sally Sheard,^a Elizabeth Pierce,^b Stephen W. Ragsdale^b and Fraser A. Armstrong*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, U.K.

^b Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, USA

Abstract

A model system for photoreduction of CO₂ to CO using visible light has been extensively studied, using a catalyst for which the CO₂/CO reaction is electrochemically reversible. The hybrid system comprises metal oxide nanoparticles functionalised with the enzyme carbon monoxide dehydrogenase (CODH), and sensitised to visible light using a ruthenium bipyridyl photosensitiser. An anatase/rutile TiO₂ mixture (Evonik Degussa P25) was selected as the most suitable semiconductor, and CO production rates and stability were examined as a function of each component (photosensitiser, enzyme and TiO₂). Tolerance to O₂ and effects of different electron donors were also investigated, together with strategies to control enzyme binding at the surface of TiO₂ in order to enhance overall activity.

This article is part of the themed collection: Biomimetic approaches to artificial photosynthesis

Download options Please wait...

Supplementary files

Supplementary information PDF (397K)

Article information

DOI: https://doi.org/10.1039/C0EE00780C
Article type: Paper
Submitted: 16 Dec 2010
Accepted: 07 Mar 2011
First published: 25 Mar 2011

Download Citation

Energy Environ. Sci., 2011,4, 2393-2399

Permissions

Request permissions

CO₂ photoreduction at enzyme-modified metal oxide nanoparticles

T. W. Woolerton, S. Sheard, E. Pierce, S. W. Ragsdale and F. A. Armstrong, Energy Environ. Sci., 2011, 4, 2393 DOI: 10.1039/C0EE00780C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Social activity

Fetching data from CrossRef.
This may take some time to load.

Energy & Environmental Science