A series of composite photocatalysts based on CdS nanorods decorated with Cu/Ni hydroxides were prepared via deposition precipitation method at room temperature (total metal loading ≈ 3 wt.%). The performance of these photocatalysts was evaluated for H₂ production through water dissociation reaction under direct sunlight irradiation. The 2.4Cu(OH)₂0.6Ni(OH)₂/CdS photocatalyst with a total 3 wt.% nominal metal cocatalyst loading demonstrated an excellent hydrogen production activity of ~20 mmol h⁻¹g⁻¹, that is 2 and 20 times greater than the benchmark Au/CdS and pristine CdS photocatalysts, respectively. Detailed analyses based on UV-Visible diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), steady state photoluminescence (PL) and energy dispersive spectroscopy (EDS) suggested cocatalysts Cu/Ni hydroxides were transformed into their metallic states during photoreaction. Cu° was produced by the transfer of electrons due to the as available position of CdS conduction band (E°= 0.61 V) to surface Cu(OH)₂ nanoclusters (Cu(OH)₂/Cu°, E°= 0.224 V) whereas Ni° was produced by the shift in conduction band level of CdS under continuous sunlight illumination (Ni(OH)₂/Ni°, E°= 0.72 V). Based on these observations, the mechanism of hydrogen production from water splitting over Cu/Ni(hydroxides)-CdS was described.

在室温下（总金属负载量≈3  wt。％），通过沉积沉淀法制备了一系列以Cu / Ni氢氧化物修饰的CdS纳米棒为基础的复合光催化剂。通过在直接日光照射下通过水离解反应产生H ₂来评估这些光催化剂的性能。具有总计3 wt。％的标称金属助催化剂负载量的2.4Cu（OH）₂ 0.6Ni（OH）₂ / CdS光 催化剂显示出约20  mmol·  h ^-1 g ^-1的优异制氢活性分别比基准Au / CdS和原始CdS光催化剂大2倍和20倍。基于紫外可见漫反射光谱（DRS），X射线衍射（XRD），透射电子显微镜（TEM），X射线光电子光谱（XPS），稳态光致发光（PL）和能量色散光谱（EDS）的详细分析）建议在光反应过程中助催化剂Cu / Ni氢氧化物转变成其金属态。由于CdS导带的有效位置（E°= 0.61  V）到表面Cu（OH）₂纳米团簇（Cu（OH）₂ / Cu°，E°= 0.224 ）的电子转移产生了Cu° V），而Ni°是在连续的阳光照射下（Ni（OH）₂ / Ni°，E°= 0.72  V）通过CdS的导带能级变化产生的。基于这些观察，描述了水在Cu / Ni（氢氧化物）-CdS上分解产生氢气的机理。