The compositing of semiconductor based photocatalysts with cocatalysts is a well-known, effective strategy to acquire high hydrogen evolution efficiency, for which their morphology and composition are the concerns of most literatures. However, the contact between them, which has been always difficult to improve, is also a key factor. Here a novel β-NiS film modified CdS nanoflowers (NiS/CdS NFs) heterostructure nanocomposite (HSNC) was successfully synthesized through a simple one-pot hydrothermal method. The obtained NiS/CdS NFs HSNC has well-constructed integrated structure of strong adhesion between the semiconducting CdS NFs and the cocatalyst NiS thin films, displaying good transfer ability to photogenerated electrons and high adsorption to visible light together. Resultantly, the obtained composite presents extraordinarily highly efficient photocatalytic hydrogen evolution, and high chemical and structural stability in aqueous solution containing 20 vol.% lactic acid under visible light. The highest rate for hydrogen production reached a recorded value of about 30.1 mmol h⁻¹ g⁻¹ at 25 °C among all CdS-NiS composite catalysts, and the highest apparent quantum efficiency was approximately 43% at 420 nm. The growth and photocatalysis mechanisms for the NiS/CdS NFs were proposed.

半导体基光催化剂与助催化剂的复合是获得高氢释放效率的众所周知的有效策略，其形态和组成是大多数文献所关注的。但是，它们之间的联系一直是很难改善的，这也是一个关键因素。本文通过一种简单的一锅水热法成功地合成了一种新型的β-NiS膜修饰的CdS纳米花（NiS / CdS NFs）异质结构纳米复合材料（HSNC）。所得的NiS / CdS NFs HSNC具有良好的整体结构，在半导体CdS NFs与助催化剂NiS薄膜之间具有很强的附着力，共同显示出对光生电子的良好转移能力和对可见光的高吸附性。结果，所得的复合物在可见光下在含有20％（体积）乳酸的水溶液中表现出非常高效的光催化氢释放，以及高化学和结构稳定性。最高产氢速率达到约30.1 mmol·h的记录值在所有CdS-NiS复合催化剂中，25°C时^-1  g ^-1，最高表观量子效率在420 nm时约为43％。提出了NiS / CdS NFs的生长和光催化机理。