CdS photocorrosion seriously impeded its application in photocatalysis, especially for water splitting. Here we report new strategies to improve CdS photocorrosion resistance properties significantly by coating Ni₂P shell and assembling an artificial gill to remove newly formed O₂ from water. Ni₂P@CdS catalyst can achieve the over-all water splitting under visible light irradiation without addition of any sacrifice reagent and noble metal loading. Compared with CdS itself, the Ni₂P@CdS photocatalyst exhibits excellent photocatalytic activity for hydrogen evolution (251.4 μmol of H₂ in 180 min) with a high AQE (3.89% at 430 nm). This catalyst also presents high photocurrent, low overpotential (−0.32 V vs SCE), and long fluorescence lifetime (16.27 ns) of excited charges. Cd²⁺ ions concentration measured by ICP and long term stability results verified the anti-photocorrosion role of Ni₂P shell on CdS during water splitting reaction. The activity and stability of 10Ni₂P@CdS is even superior to typical 1Pt@CdS catalyst. Our results confirm CdS can be an active catalyst for photocatalytic hydrogen generation from water under visible irradiation if its stability is enhanced by protection of anti-photocorrosion over-coating shell and removing the nascent formed oxygen from water.

中文翻译：

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通过涂覆Ni ₂ P壳并用人造g去除新生的形成的氧来增强CdS的光催化活性，从而通过抗光蚀作用将水分解。

CdS光腐蚀严重阻碍了其在光催化中的应用，特别是在水分解中。在这里，我们报告了通过涂覆Ni ₂ P壳并组装人造g以从水中去除新形成的O ₂来显着改善CdS耐光蚀性能的新策略。Ni ₂ P @ CdS催化剂可在可见光照射下实现全部水分解，而无需添加任何牺牲试剂和贵金属负载。与CdS本身相比，Ni ₂ P @ CdS光催化剂对氢气的释放表现出出色的光催化活性（180分钟内251.4μmolH ₂），具有很高的AQE（在430 nm处为3.89％）。该催化剂还具有高光电流，低超电势（-0.32 V与SCE相比），激发电荷的荧光寿命长（16.27 ns）。ICP测定的Cd ²⁺离子浓度和长期稳定性结果证实了Ni ₂ P壳在水分解反应中对CdS的抗光腐蚀作用。10Ni ₂ P @ CdS的活性和稳定性甚至优于典型的1Pt @ CdS催化剂。我们的结果证实，如果通过保护抗光蚀外涂层外壳并从水中除去新生的氧气而提高了CdS的稳定性，CdS可以成为在可见光下从水中产生光催化制氢的活性催化剂。