Self-organized photosynthetic nanoparticle for cell-free hydrogen production View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-01

AUTHORS

Ifeyinwa J. Iwuchukwu, Michael Vaughn, Natalie Myers, Hugh O'Neill, Paul Frymier, Barry D. Bruce

ABSTRACT

There is considerable interest in making use of solar energy through photosynthesis to create alternative forms of fuel. Here, we show that photosystem I from a thermophilic bacterium and cytochrome-c(6) can, in combination with a platinum catalyst, generate a stable supply of hydrogen in vitro upon illumination. The self-organized platinization of the photosystem I nanoparticles allows electron transport from sodium ascorbate to photosystem I via cytochrome-c(6) and finally to the platinum catalyst, where hydrogen gas is formed. Our system produces hydrogen at temperatures up to 55 degrees C and is temporally stable for >85 days with no decrease in hydrogen yield when tested intermittently. The maximum yield is approximately 5.5 micromol H(2) h(-1) mg(-1) chlorophyll and is estimated to be approximately 25-fold greater than current biomass-to-fuel strategies. Future work will further improve this yield by increasing the kinetics of electron transfer, extending the spectral response and replacing the platinum catalyst with a renewable hydrogenase. More... »

PAGES

73-79

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/nnano.2009.315

DOI

http://dx.doi.org/10.1038/nnano.2009.315

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1023267340

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/19898496


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