The development of platinum-coordinated polyoxometalates for molecular-level utilization of platinum

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Platinum and its derivatives, e.g., alloys, oxides, organometallics, and inorganic compounds, have attracted considerable attention due to their efficient physical and chemical properties. Since platinum is an imperative metal for catalysts, electronics, and pharmaceutical compounds, numerous studies on the syntheses, properties, and activities of various platinum compounds have been reported; however, there is still a need for improved properties and activities. In this study, some novel platinum compounds were synthesized by using Keggin-type lacunary polyoxometalates. In addition, the photocatalytic performances of platinum-coordinated polyoxometalates were investigated for hydrogen evolution from water under visible light irradiation in the presence of titanium dioxide or Eosin Y.