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Title: Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system

Abstract

A method is disclosed improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation. The method comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound ..pi..-..pi.. complexes which can develop.

Inventors:
Issue Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
5391522
Application Number:
ON: DE85017723
Assignee:
Dept. of Energy SNL; EDB-85-146865
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 08 HYDROGEN; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HYDROGEN PRODUCTION; PHOTOSYNTHESIS; ABSORPTION; AQUEOUS SOLUTIONS; LIGANDS; PORPHYRINS; SPECTRAL REFLECTANCE; WATER; CARBOXYLIC ACIDS; CHEMICAL REACTIONS; DISPERSIONS; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; MIXTURES; OPTICAL PROPERTIES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; PHYSICAL PROPERTIES; SOLUTIONS; SYNTHESIS; 140505* - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-); 080106 - Hydrogen- Production- Biosynthesis & Photochemical Processes; 400500 - Photochemistry

Citation Formats

Shelnutt, J.A. Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system. United States: N. p., 1984. Web.
Shelnutt, J.A. Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system. United States.
Shelnutt, J.A. Thu . "Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system". United States.
@article{osti_5391522,
title = {Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system},
author = {Shelnutt, J.A.},
abstractNote = {A method is disclosed improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation. The method comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound ..pi..-..pi.. complexes which can develop.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {11}
}