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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 8
BKCSDE 21(8)
August 20, 2000 

Photocatal~ic Hydrogen Evolution with Platinum Loaded Cadmium-Iron-Sulfide Mixed Crystal Powders in Aque-ous Media
Chullae Cho, Sejin Park, Hasuck Kim*
Mixed crystal powders based on Cd,Fe, and S have been synthesized by varying the ratio of CdS and FeS₂in order to find a suitable material usefuI for the effectivc conversion of solar energy. Hydrogen gas was evolved only with CdS/Ptby photocatalytic reaction under white light in an aqueous 1 M sodiumsulfite solution. From electrochemical studies of semiconductor electrodes. itwas shown that the onset potential shifted to the positive direction and that the bandgap energy also decreased as the molar ratio of Fe increased. A hydrogen evolution mechanism in terms of the conduction band potential and hydrogen evolution potential is proposed.
805 - 808
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