| 摘要 |
PURPOSE:To obtain the title highly active catalyst by adding an aq. soln. of cadmium sulfide powder and an alkali(earth) metal to an aq. soln. of a platinum or palladium complex to alkalinize the soln., evaporating the whole material to dryness, and then heating the obtained material in an inert gas. CONSTITUTION:Cadmium sulfide powder is added to the aq. soln. of a platinum or palladium complex. The hydroxide of an alkali metal or an alkaline-earth metal is then added to the mixture to alkalinize the mixture. The mixture of the cadmium sulfide, metallic complex, and water are evaporated to dryness while sufficiently agitating the mixture, and the obtained material is crushed by a mortar. The material is charged in a quartz boat, and heated preferably at 150-400 deg.C for 1-10hr in an inert gas atmosphere to obtain the cadimium sulfide powdery photocatalyst deposited with platinum or palladium. The catalyst exhibits high activity in the generation of hydrogen from an aq. sodium sulfide soln. under the radiation of light.
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