为了提高CdS的产氢活性，采用溶剂热法制备了NiCoP/CdS纳米棒复合光催化剂。质量分数为3% NiCoP/CdS的产氢量达到47.86 mmol/（g·h），是质量分数5% Pt/CdS产氢量的6.9倍，是无助催化剂CdS的126倍。此外，NiCoP/CdS具有较好的光催化稳定性，在反应24 h后进行5次循环产氢测试，其产氢活性没有明显下降。稳态荧光光谱、时间分辨荧光光谱和瞬态光电流测试结果表明，复合后NiCoP/CdS荧光强度降低、荧光寿命减小、光电流增加，说明NiCoP的修饰能够有效促进光生电子和空穴的分离，进而提高NiCoP/CdS复合光催化剂的产氢活性。

To improve hydrogen evolution,NiCoP/CdS photo-catalyst is prepared by loading NiCoP onto CdS nanorods through solvothermal method.The results show that NiCoP/CdS exhibits excellent photocatalytic activity.The rate of hydrogen evolution over 3% NiCoP/CdS reaches 47.86 mmol/(g·h),which is 6.9 and 126 times higher than that over 5% Pt/CdS and pure CdS,respectively.Furthermore,NiCoP/CdS exhibits a long-time stability for photocatalytic H₂ production.The results show that there is no significant decline in hydrogen yield rate during 5 cycles of hydrogen production test after 24 hours of reaction.The steady-state fluorescence spectra,time-resolved fluorescence spectra and transient photocurrent tests show that both the fluorescence intensity and lifetime of NiCoP/CdS decrease,but its photocurrent increases when NiCoP is loaded onto the surface of CdS nanorods,indicating that NiCoP can greatly promote electron-hole pair to separate,which is favorable to improve the photocatalytic performance.

薛楠楠(1993-),女,硕士研究生,研究方向为非贵金属助催化剂的构效关系及其在光解水产氢中的应用,xuenannan@sxicc.ac.cn