Document Detail


Robust Photogeneration of H2 in Water Using Semiconductor Nanocrystals and a Nickel Catalyst.
MedLine Citation:
PMID:  23138979     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Homogeneous systems for light-driven reduction of protons to H(2) typically suffer from short lifetimes because of decomposition of the light-absorbing molecule. We report a robust and highly active system for solar hydrogen generation in water that uses CdSe nanocrystals capped with dihydrolipoic acid (DHLA) as the light absorber and a soluble Ni(2+)-DHLA catalyst for proton reduction with ascorbic acid as an electron donor at pH 4.5, which gives >600,000 turnovers. Under appropriate conditions, the precious-metal-free system has undiminished activity for at least 360 hours under illumination at 520 nm and achieves quantum yields in water of over 36%.
Authors:
Zhiji Han; Fen Qiu; Richard Eisenberg; Patrick L Holland; Todd D Krauss
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-8
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  -     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
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