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- W2004238043 abstract "Photoelectrochemical studies of RuS2-coated TiO2 electrodes showed semiconductor sensitization by RuS2 fine particles on TiO2. RuS2 particles of ca. 100 nm size were observed from a scanning electron micrograph of the RuS2/TiO2 electrode surface. RuS2-coated TiO2 electrodes showed continuous wide absorption in the visible spectral region. Photoelectrochemical measurements of several RuS2/TiO2 electrodes, prepared under different conditions, were carried out. The electron-transfer efficiency from RuS2 to TiO2 was affected by the number of RuS2 colloid coatings and the preparation temperature of the RuS2 colloids. A schematic study was carried out on the effect of a heat treatment in order to find the optimum temperature for the maximum sensitization efficiency. A comparison of the absorption and action spectra of the RuS2/TiO2 electrode showed that only small RuS2 particles with a critical size distribution could transfer the photo-generated electrons to TiO2. A band-gap value of ca. 2.8 eV was evaluated (from the photocurrent action spectrum) for the RuS2 particles with high sensitization efficiency. A scheme which shows the energy diagram for RuS2 fine particles has been proposed by considering the flat-band potential values derived from the photocurrent onset potentials and the above-mentioned band-gap value." @default.
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- W2004238043 date "1995-09-01" @default.
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- W2004238043 title "Photoelectrochemical Properties of RuS<sub>2</sub>-Coated TiO<sub>2</sub>Electrodes" @default.
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