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SungHyeonBaeck,EricW.McFarland 한국화학공학회 2002 Korean Journal of Chemical Engineering Vol.19 No.4
systems for electrochemical synthesis and high throughput screening of photoelectrochemi-cal materials were developed and used to prepare tungsten-molybdenum mixed metal oxides, WO3-MoO3. Two-dimen-sional arays (library) of diverse composition were synthesized by automated cathodic electrodeposition on Ti foil sub-strate. Electrolytes were prepared by mixing W-peroxo complex and Mo-peroxo complex. The compositions in filmswere found to strongly depend on the composition of electrolyte, and found to be relatively independent of de-position voltage. The morphology was found to be very homogeneous. The electrodeposited oxides typicaly showedn-type behavior. Automated measurement of photocurent by using a scanning photoelectrochemical cell showed thatmixed oxides showed higher photocatalytic activity than pure tungsten oxide or pure molybdenum oxide. Photoac-titvities of the mixed oxides were strongly dependent on the film composition.