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Visible Light Induced Water Cleavage in CdS Dispersions Loaded with Pt and RuO 2 , Hole Scavenging by RuO 2
Author(s) -
Kalyanasundaram Kuppuswamy,
Borgarello Enrico,
Gráutzel Michael
Publication year - 1981
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19810640137
Subject(s) - chemistry , scavenging , visible spectrum , cleavage (geology) , chemical engineering , nanotechnology , photochemistry , optoelectronics , organic chemistry , composite material , physics , fracture (geology) , engineering , antioxidant , materials science
Illumination of aqueous CdS dispersions loaded with Pt and RuO 2 by visible light produces hydrogen and oxygen in stoichiometric proportion. No degradation of the photocatalyst is noted after 60 h of irradiation time. The RuO 2 deposit on the particle surface greatly accelerates the transfer of holes from the semiconductor valence band to the aqueous solution thus inhibiting photocorrosion.