Efficient charge utilization in photocatalysis are of great importance not only for improving photocatalytic hydrogen evolution, but also for achieving excellent performance of semiconductors applying for actual operation. Herein, it is demonstrated that by the way of providing an additional electric field, the migration efficiency of electron-hole pairs can be improved apparently. Specifically, for the first time, hexagonal CdS and NiV-layered double hydroxide (NiV LDH), both of them are reported to be one of the most promising materials in photocatalytic water splitting, is assembled with the mass ratio of ten to one to constract a novel p-n heterojunction photocatalyst named as CNV-2. The combination of p-type CdS and n-type NiV LDH can facilitate electrons and holes transfer and separation ultimately enhance photocatalytic hydrogen-production efficiency by providing an additional electric field. Furthermore, the delicate architecture and the excellent property in the absence of sacrificial agents is certified various characterization studies, which are in good consistent with each other, thereby confirming its potential of CNV-2p-n junction for the water-splitting reaction and energy storage.

在光催化中有效利用电荷不仅对于改善光催化氢的释放，而且对于实现用于实际操作的半导体的优异性能都具有重要意义。在此证明，通过提供附加的电场，可以明显提高电子-空穴对的迁移效率。具体而言，据报道，六方六方硫化镉和NiV层状双氢氧化物（NiV LDH）都是光催化水分解中最有前途的材料之一，其质量比为10：1。一种新型的pn异质结光催化剂CNV-2。p型CdS和n型NiV LDH的结合可以促进电子和空穴的转移和分离，并通过提供额外的电场最终提高光催化制氢的效率。此外，各种牺牲性研究证明，在不使用牺牲剂的情况下，其精巧的结构和优异的性能彼此之间具有很好的一致性，从而证实了其CNV-2p-n结在水分解反应和储能方面的潜力。 。