DOI: 10.1002/anie.201404259. Prolonged Hot Electron Dynamics in Plasmonic‐Metal/Semiconductor Heterostructures with Implications for Solar Photocatalysis

Prolonged Hot Electron Dynamics in Plasmonic‐Metal/Semiconductor Heterostructures with Implications for Solar Photocatalysis

10.1002/anie.201404259

Crossref journal-article

Wiley

Angewandte Chemie International Edition (311)

Abstract

AbstractIdeal solar‐to‐fuel photocatalysts must effectively harvest sunlight to generate significant quantities of long‐lived charge carriers necessary for chemical reactions. Here we demonstrate the merits of augmenting traditional photoelectrochemical cells with plasmonic nanoparticles to satisfy these daunting photocatalytic requirements. Electrochemical techniques were employed to elucidate the mechanics of plasmon‐mediated electron transfer within Au/TiO2 heterostructures under visible‐light (λ>515 nm) irradiation in solution. Significantly, we discovered that these transferred electrons displayed excited‐state lifetimes two orders of magnitude longer than those of electrons photogenerated directly within TiO2 via UV excitation. These long‐lived electrons further enable visible‐light‐driven H2 evolution from water, heralding a new photocatalytic paradigm for solar energy conversion.

Bibliography

DuChene, J. S., Sweeny, B. C., JohnstonâPeck, A. C., Su, D., Stach, E. A., & Wei, W. D. (2014). Prolonged Hot Electron Dynamics in PlasmonicâMetal/Semiconductor Heterostructures with Implications for Solar Photocatalysis. Angewandte Chemie International Edition, 53(30), 7887â7891. Portico.

Authors 6

Joseph S. DuChene (first)
Brendan C. Sweeny (additional)
Aaron C. Johnston‐Peck (additional)
Dong Su (additional)
Eric A. Stach (additional)
Wei David Wei (additional)

References 73 Referenced 376

Dates

Type	When
Created	11 years, 2 months ago (June 11, 2014, 12:23 p.m.)
Deposited	1 year, 10 months ago (Oct. 16, 2023, 2:49 p.m.)
Indexed	16 hours, 50 minutes ago (Sept. 3, 2025, 6:29 a.m.)
Issued	11 years, 2 months ago (June 11, 2014)
Published	11 years, 2 months ago (June 11, 2014)
Published Online	11 years, 2 months ago (June 11, 2014)
Published Print	11 years, 1 month ago (July 21, 2014)

Funders 0

None

BibTeX

@article{DuChene_2014, title={Prolonged Hot Electron Dynamics in Plasmonic‐Metal/Semiconductor Heterostructures with Implications for Solar Photocatalysis}, volume={53}, ISSN={1521-3773}, url={http://dx.doi.org/10.1002/anie.201404259}, DOI={10.1002/anie.201404259}, number={30}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={DuChene, Joseph S. and Sweeny, Brendan C. and Johnston‐Peck, Aaron C. and Su, Dong and Stach, Eric A. and Wei, Wei David}, year={2014}, month=jun, pages={7887–7891} }

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