Imperial College London
Alternate

Professor Bill Rutherford FRS

Faculty of Natural Sciences, Department of Life Sciences

Chair in Biochemistry of Solar Energy
 
 
 
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Contact

 

+44 (0)20 7594 5329a.rutherford Website

 
 
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Location

 

702Sir Ernst Chain BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhang:2018:10.1021/jacs.7b08563,
author = {Zhang, JZ and Bombelli, P and Sokol, KP and Fantuzzi, A and Rutherford, AW and Howe, CJ and Reisner, E},
doi = {10.1021/jacs.7b08563},
journal = {Journal of the American Chemical Society},
pages = {6--9},
title = {Photoelectrochemistry of Photosystem II &ITin Vitro&IT vs&IT in Vivo&IT},
url = {http://dx.doi.org/10.1021/jacs.7b08563},
volume = {140},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Factors governing the photoelectrochemical output of photosynthetic microorganisms are poorly understood, and energy loss may occur due to inefficient electron transfer (ET) processes. Here, we systematically compare the photoelectrochemistry of photosystem II (PSII) protein-films to cyanobacteria biofilms to derive: (i) the losses in light-to-charge conversion efficiencies, (ii) gains in photocatalytic longevity, and (iii) insights into the ET mechanism at the biofilm interface. This study was enabled by the use of hierarchically structured electrodes, which could be tailored for high/stable loadings of PSII core complexes and Synechocystis sp. PCC 6803 cells. The mediated photocurrent densities generated by the biofilm were 2 orders of magnitude lower than those of the protein-film. This was partly attributed to a lower photocatalyst loading as the rate of mediated electron extraction from PSII in vitro is only double that of PSII in vivo. On the other hand, the biofilm exhibited much greater longevity (>5 days) than the protein-film (<6 h), with turnover numbers surpassing those of the protein-film after 2 days. The mechanism of biofilm electrogenesis is suggested to involve an intracellular redox mediator, which is released during light irradiation.
AU  - Zhang,JZ
AU  - Bombelli,P
AU  - Sokol,KP
AU  - Fantuzzi,A
AU  - Rutherford,AW
AU  - Howe,CJ
AU  - Reisner,E
DO  - 10.1021/jacs.7b08563
EP  - 9
PY  - 2018///
SN  - 1520-5126
SP  - 6
TI  - Photoelectrochemistry of Photosystem II &ITin Vitro&IT vs&IT in Vivo&IT
T2  - Journal of the American Chemical Society
UR  - http://dx.doi.org/10.1021/jacs.7b08563
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000422813300002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/63105
VL  - 140
ER  -
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