Light Induced H2 Evolution from a Biophotocathode Based on Photosystem 1 - Pt Nanoparticles Complexes Integrated in Solvated Redox Polymers Films

Fangyuan Zhao; Felipe Conzuelo; Volker Hartmann; Huaiguang Li; Marc M. Nowaczyk; Nicolas Plumeré; Matthias Rögner; Wolfgang Schuhmann

doi:10.1021/acs.jpcb.5b03511

Light Induced H₂ Evolution from a Biophotocathode Based on Photosystem 1 - Pt Nanoparticles Complexes Integrated in Solvated Redox Polymers Films

Fangyuan Zhao, Felipe Conzuelo, Volker Hartmann, Huaiguang Li, Marc M. Nowaczyk, Nicolas Plumeré, Matthias Rögner, Wolfgang Schuhmann

Max-Planck-lnstitut für Kohlenforschung

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

We report on a biophotocathode based on photosystem 1 (PS1)-Pt nanoparticle complexes integrated in a redox hydrogel for photoelectrocatalytic H₂ evolution at low overpotential. A poly(vinyl)imidazole Os(bispyridine)₂Cl polymer serves as conducting matrix to shuttle the electrons from the electrode to the PS1-Pt complexes embedded within the hydrogel. Light induced charge separation at the PS1-Pt complexes results in the generation of photocurrents (4.8 ± 0.4 μA cm^-2) when the biophotocathodes are exposed to anaerobic buffer solutions. Under these conditions, the protons are the sole possible electron acceptors, suggesting that the photocurrent generation is associated with H₂ evolution. Direct evidence for the latter process is provided by monitoring the H₂ production with a Pt microelectrode in scanning electrochemical microscopy configuration over the redox hydrogel film containing the PS1-Pt complexes under illumination.

Original language	English
Pages (from-to)	13726-13731
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	119
Issue number	43
DOIs	https://doi.org/10.1021/acs.jpcb.5b03511
State	Published - 29 Oct 2015
Externally published	Yes

Access to Document

10.1021/acs.jpcb.5b03511

Cite this

@article{0aff008419d640a0bf95ddea13902fb5,

title = "Light Induced H2 Evolution from a Biophotocathode Based on Photosystem 1 - Pt Nanoparticles Complexes Integrated in Solvated Redox Polymers Films",

abstract = "We report on a biophotocathode based on photosystem 1 (PS1)-Pt nanoparticle complexes integrated in a redox hydrogel for photoelectrocatalytic H2 evolution at low overpotential. A poly(vinyl)imidazole Os(bispyridine)2Cl polymer serves as conducting matrix to shuttle the electrons from the electrode to the PS1-Pt complexes embedded within the hydrogel. Light induced charge separation at the PS1-Pt complexes results in the generation of photocurrents (4.8 ± 0.4 μA cm-2) when the biophotocathodes are exposed to anaerobic buffer solutions. Under these conditions, the protons are the sole possible electron acceptors, suggesting that the photocurrent generation is associated with H2 evolution. Direct evidence for the latter process is provided by monitoring the H2 production with a Pt microelectrode in scanning electrochemical microscopy configuration over the redox hydrogel film containing the PS1-Pt complexes under illumination.",

author = "Fangyuan Zhao and Felipe Conzuelo and Volker Hartmann and Huaiguang Li and Nowaczyk, {Marc M.} and Nicolas Plumer{\'e} and Matthias R{\"o}gner and Wolfgang Schuhmann",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = oct,

day = "29",

doi = "10.1021/acs.jpcb.5b03511",

language = "English",

volume = "119",

pages = "13726--13731",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "43",

}

TY - JOUR

T1 - Light Induced H2 Evolution from a Biophotocathode Based on Photosystem 1 - Pt Nanoparticles Complexes Integrated in Solvated Redox Polymers Films

AU - Zhao, Fangyuan

AU - Conzuelo, Felipe

AU - Hartmann, Volker

AU - Li, Huaiguang

AU - Nowaczyk, Marc M.

AU - Plumeré, Nicolas

AU - Rögner, Matthias

AU - Schuhmann, Wolfgang

PY - 2015/10/29

Y1 - 2015/10/29

N2 - We report on a biophotocathode based on photosystem 1 (PS1)-Pt nanoparticle complexes integrated in a redox hydrogel for photoelectrocatalytic H2 evolution at low overpotential. A poly(vinyl)imidazole Os(bispyridine)2Cl polymer serves as conducting matrix to shuttle the electrons from the electrode to the PS1-Pt complexes embedded within the hydrogel. Light induced charge separation at the PS1-Pt complexes results in the generation of photocurrents (4.8 ± 0.4 μA cm-2) when the biophotocathodes are exposed to anaerobic buffer solutions. Under these conditions, the protons are the sole possible electron acceptors, suggesting that the photocurrent generation is associated with H2 evolution. Direct evidence for the latter process is provided by monitoring the H2 production with a Pt microelectrode in scanning electrochemical microscopy configuration over the redox hydrogel film containing the PS1-Pt complexes under illumination.

AB - We report on a biophotocathode based on photosystem 1 (PS1)-Pt nanoparticle complexes integrated in a redox hydrogel for photoelectrocatalytic H2 evolution at low overpotential. A poly(vinyl)imidazole Os(bispyridine)2Cl polymer serves as conducting matrix to shuttle the electrons from the electrode to the PS1-Pt complexes embedded within the hydrogel. Light induced charge separation at the PS1-Pt complexes results in the generation of photocurrents (4.8 ± 0.4 μA cm-2) when the biophotocathodes are exposed to anaerobic buffer solutions. Under these conditions, the protons are the sole possible electron acceptors, suggesting that the photocurrent generation is associated with H2 evolution. Direct evidence for the latter process is provided by monitoring the H2 production with a Pt microelectrode in scanning electrochemical microscopy configuration over the redox hydrogel film containing the PS1-Pt complexes under illumination.

UR - http://www.scopus.com/inward/record.url?scp=84946018508&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcb.5b03511

DO - 10.1021/acs.jpcb.5b03511

M3 - Article

C2 - 26091401

AN - SCOPUS:84946018508

SN - 1520-6106

VL - 119

SP - 13726

EP - 13731

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 43

ER -

Light Induced H₂ Evolution from a Biophotocathode Based on Photosystem 1 - Pt Nanoparticles Complexes Integrated in Solvated Redox Polymers Films

Abstract

Access to Document

Other files and links

Fingerprint

Cite this