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- W4387307950 abstract "Abstract Photocatalytic water splitting is a simple means of converting solar energy into storable hydrogen energy. Narrow‐band gap oxysulfide photocatalysts have attracted much attention in this regard owing to the significant visible‐light absorption and relatively high stability of these compounds. However, existing materials suffer from low efficiencies due to difficulties in synthesizing these oxysulfides with suitable degrees of crystallinity and particle sizes, and in constructing effective reaction sites. The present work demonstrates the production of a Gd 2 Ti 2 O 5 S 2 ( λ <650 nm) photocatalyst capable of efficiently driving photocatalytic reactions. Single‐crystalline, plate‐like Gd 2 Ti 2 O 5 S 2 particles with atomically ordered surfaces were synthesized by flux and chemical etching methods. Ultrafine Pt‐IrO 2 cocatalyst particles that promoted hydrogen (H 2 ) and oxygen (O 2 ) evolution reactions were subsequently loaded on the Gd 2 Ti 2 O 5 S 2 while ensuring an intimate contact by employing a microwave‐heating technique. The optimized Gd 2 Ti 2 O 5 S 2 was found to evolve H 2 from an aqueous methanol solution with a remarkable apparent quantum efficiency of 30 % at 420 nm. This material was also stable during O 2 evolution in the presence of a sacrificial reagent. The results presented herein demonstrates a highly efficient narrow‐band gap oxysulfide photocatalyst with potential applications in practical solar hydrogen production." @default.
- W4387307950 created "2023-10-04" @default.
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- W4387307950 date "2023-10-12" @default.
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- W4387307950 title "An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30% under Visible Light" @default.
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- W4387307950 doi "https://doi.org/10.1002/ange.202312938" @default.
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