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Ultrathin Ni(OH)2 nanosheets: a new strategy for cocatalyst design on CdS surfaces for photocatalytic hydrogen generation

机译:Ni(OH)2超薄纳米片:在CdS表面设计助催化剂以产生光催化氢的新策略

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Ultrathin metal materials exhibit quantum size and surface effects that give rise to unique catalytic properties. In this paper, we report a facile liquid synthesis method for polyvinylpyrrolidone (PVP, K30) capped ultrathin Ni(OH) _(2) nanosheets with lamellar structure. The as-prepared ultrathin Ni(OH) _(2) nanosheets coupled with CdS nanorods exhibit excellent activity in hydrogen generation from water splitting under visible light. The H _(2) evolution rate of Ni(OH) _(2) /CdS, 40.18 mmol h ~(?1) g _(Cat.) ~(?1) with a quantum efficiency of 66.1% at 420 nm, is ca. 1.5 times that of Pt/CdS with an optimal loading amount (1.25 wt%) under the same reaction conditions. Considering the cost of photocatalysts, the ultrathin Ni(OH) _(2) nanosheet coupled CdS photocatalyst may have a promising commercial application in photocatalytic hydrogen production.
机译:超薄金属材料具有量子尺寸和表面效应,可产生独特的催化性能。在本文中,我们报告了一种方便的液体合成方法,用于聚乙烯吡咯烷酮(PVP,K30)封盖的具有层状结构的超薄Ni(OH)_(2)纳米片。制备的超薄Ni(OH)_(2)纳米片与CdS纳米棒耦合,在可见光作用下分解水产生的氢气中表现出出色的活性。 Ni(OH)_(2)/ CdS的H _(2)演化速率为40.18 mmol h〜(?1)g _(Cat。)〜(?1),在420 nm处的量子效率为66.1%,是。在相同的反应条件下,具有最佳负载量(1.25 wt%)的Pt / CdS的1.5倍。考虑到光催化剂的成本,超薄的Ni(OH)_(2)纳米片偶联CdS光催化剂可能在光催化制氢中具有广阔的商业应用前景。

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