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Updated: Sep 23, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
Selective loading of platinum or silver cocatalyst onto a hydrogen-evolution photocatalyst in a silver-mediated all
Junya Osaki1, Masaomi Yoda1, Toshihiro Takashima1,2
1Special Doctoral Program for Green Energy Conversion Science and Technology, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi 4-3-11 Takeda, Kofu Yamanashi 400-8511 Japan.
Abstract:
We selectively loaded a hydrogen (H2)-evolution cocatalyst, either platinum (Pt) or silver (Ag), onto a H2-evolution photocatalyst, zinc rhodium oxide (ZnRh2O4), in a Ag-inserted ZnRh2O4 and bismuth vanadium oxide (Bi4V2O11) hetero-junction photocatalyst (ZnRh2O4/Ag/Bi4V2O11) by a photo-deposition method. The selective loading of Pt or Ag was achieved by taking advantage of the band-gap difference between ZnRh2O4 (1.2 eV) and Bi4V2O11 (1.7 eV) and increased the overall water-splitting activity of the photocatalyst.
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