Interrogation of a PS1-Based Photocathode by Means of Scanning Photoelectrochemical Microscopy

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Fangyuan ZhaoFelipe Conzuelo

Abstract

In the development of photosystem-based energy conversion devices, the in-depth understanding of electron transfer processes involved in photocurrent generation and possible charge recombination is essential as a basis for the development of photo-bioelectrochemical architectures with increased efficiency. The evaluation of a bio-photocathode based on photosystem 1 (PS1) integrated within a redox hydrogel by means of scanning photoelectrochemical microscopy (SPECM) is reported. The redox polymer acts as a conducting matrix for the transfer of electrons from the electrode surface to the photo-oxidized P700 centers within PS1, while methyl viologen is used as charge carrier for the collection of electrons at the reduced FB site of PS1. The analysis of the modified surfaces by SPECM enables the evaluation of electron-transfer processes by simultaneously monitoring photocurrent generation at the bio-photoelectrode and the associated generation of reduced charge carriers. The possibility to visualize charge recombination processes is illustrated by using two different electrode materials, namely Au and p-doped Si, exhibiting substantially different electron transfer kinetics for the reoxidation of the methyl viologen radical cation ...Continue Reading

References

Dec 2, 2004·Nature Reviews. Molecular Cell Biology·Nathan Nelson, Adam Ben-Shem
Jan 12, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Madalina CiobanuDavid E Cliffel
May 4, 2006·Annual Review of Plant Biology·Nathan Nelson, Charles F Yocum
Jul 19, 2008·Annual Review of Analytical Chemistry·Shigeru AmemiyaPatrick R Unwin
Apr 1, 2011·The Journal of Physical Chemistry. a·Peter N CiesielskiG Kane Jennings
Feb 23, 2012·Scientific Reports·Andreas MershinShuguang Zhang
Sep 5, 2012·Advanced Materials·Gabriel LeBlancDavid E Cliffel
Mar 1, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Gabriel LeBlancG Kane Jennings
Apr 15, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Bingyan ZhangMingkui Wang
Jun 25, 2014·Physical Chemistry Chemical Physics : PCCP·Kai R StiegerFred Lisdat
Dec 30, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Vivek B ShahPratim Biswas
Mar 24, 2015·Analytical Chemistry·Barak D B AaronsonPatrick R Unwin
Apr 22, 2015·ACS Applied Materials & Interfaces·Evan A GizzieDavid E Cliffel
Oct 25, 2016·Nature Chemical Biology·Jenny Z ZhangErwin Reisner
Nov 16, 2016·Nature Chemical Biology·Marc M Nowaczyk, Nicolas Plumeré

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Citations

Feb 24, 2021·ACS Applied Materials & Interfaces·Sascha MorlockFred Lisdat
May 26, 2020·Trends in Biotechnology·Alexandra H Teodor, Barry D Bruce
Mar 20, 2019·Journal of the American Chemical Society·Fangyuan ZhaoFelipe Conzuelo

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