Cocatalyst loading is of critical importance in efficient photocatalytic water splitting over perovskite oxynitrides. Perovskite CaTaO₂N was synthesized for enhancing photocatalytic hydrogen evolution via decoration of a Pt cocatalyst by impregnation–reduction and photodeposition methods. The Pt-loaded CaTaO₂N photocatalyst evolves 6.4 μmol H₂ per hour, with an apparent quantum yield as high as 0.67% at a wavelength of 420 nm. Decorating the cocatalyst with uniform dispersion and intimate contact onto the surface of narrow-bandgap perovskite oxynitrides is an efficient method to upgrade photocatalytic hydrogen evolution from water splitting.

中文翻译：

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通过设计铂助催化剂的表面增强 CaTaO2N 上水分解的光催化析氢


助催化剂负载对于钙钛矿氮氧化物的高效光催化水分解至关重要。通过浸渍还原和光沉积方法装饰 Pt 助催化剂，合成了钙钛矿 CaTaO ₂ N，用于增强光催化析氢。负载Pt的CaTaO ₂ N光催化剂每小时放出6.4 μmol H ₂ ，在420 nm波长下表观量子产率高达0.67%。将助催化剂均匀分散并紧密接触到窄带隙钙钛矿氮氧化物表面进行装饰是提高光催化水分解析氢的有效方法。