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INFLUENCE OF RUTHENIUM, RHODIUM AND VANADIUM IONS ON PHOTOPRODUCTION OF HYDROGEN BY Chlorella fusca
Author(s) -
Paveti M.,
Tausch H.,
Stehlik G.,
Roehr M.
Publication year - 1984
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1984.tb04547.x
Subject(s) - hydrogen production , dcmu , hydrogen , photosystem , thylakoid , chloroplast , chlorella , chemistry , rhodium , photosystem ii , membrane , photochemistry , ruthenium , biophysics , photosynthesis , biochemistry , botany , biology , catalysis , algae , organic chemistry , gene
Ru 3+ and Rh 3+ supplied at a concentration of 1 x 10 −5 mol/l in the nutrient medium are incorporated preferably by the chloroplasts of Chlorella fusca cells as shown by electron micrographs without using any contrasting agent. Both elements cause a significant increase of production rate as well as of total hydrogen production. In experiments with synchronized C. fusca the maturing cells yielded maximal hydrogen production. Inhibition of hydrogen photoproduction by DCMU indicates that both photosystems are involved. Ru(bipy)3 2+ , an essential component of photocatalysts, also is incorporated to a great extent and preferably bound to the thylakoid membranes of the chloroplasts but shows a negative influence on hydrogen production. V 3+ is incorporated only to a small extent without any enrichment to the chloroplasts and shows no effect on hydrogen production.