Mn0.2Cd0.8S nanowires modified by CoP3 nanoparticles for highly efficient photocatalytic H2 evolution under visible light irradiation
Mn0.2Cd0.8S nanowires modified by CoP3 nanoparticles for highly efficient photocatalytic H2 evolution under visible light irradiation
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CoP3纳米粒子修饰的Mn0.2Cd0.8S纳米线在可见光照射下高效光催化析氢
DOI：
10.1016/j.apcatb.2018.06.040
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发表时间：
2018-12-05
影响因子：
22.1
通讯作者：
Li, Zhong-Jun
中科院分区：
文献类型：
--
作者：
Huang, Qun-Zeng;Tao, Ze-Juan;Li, Zhong-Jun
开发高效、低成本、无贵金属的光催化水裂解H-2共催化剂是实现可再生氢经济的长期目标。本文采用简单的溶剂热法将CoP3纳米颗粒加载到一维Mn0.2Cd0.8S纳米线（NWs）表面，成功制备了一系列新型Mn0.2Cd0.8S/CoP3复合材料。在可见光（λ >= 420 nm）照射下，含2.87 wt% CoP3的Mn0.2Cd0.8S/CoP3复合材料表现出最高的光催化h -2演化活性，相应的h -2演化速率为29.53 mmol g(-1) h(-1)， 420 nm处的表观量子产率为29.2%，是纯Mn0.2Cd0.8S的5.02倍，是Mn0.2Cd0.8S/Pt-1.5 wt%的1.79倍。Mn0.2Cd0.8S/CoP3复合材料具有良好的光稳定性。Mn0.2Cd0.8S/CoP3复合材料具有优异的光催化活性，主要归功于其高效的电荷分离效率和充足的H-2演化反应活性位点的协同作用。本研究揭示了低成本的CoP3可以取代贵金属Pt作为一种高效的助催化剂来提高半导体材料的光催化活性。
Development of highly efficient and low-cost noble metal-free co-catalysts for photocatalytic H-2 evolution from water splitting has been aiming at a long-term goal of a renewable hydrogen economy. Herein, a series of novel Mn0.2Cd0.8S/CoP3 composites have been successfully prepared through loading CoP3 nanoparticles on the surface of one dimensional (1D) Mn0.2Cd0.8S nanowires (NWs) by a facile solvothermal method. Under visible light (lambda >= 420 nm) irradiation, the as-prepared Mn0.2Cd0.8S/CoP3 composite with 2.87 wt% of CoP3 displayed the highest photocatalytic H-2 evolution activity with a corresponding H-2 evolution rate of 29.53 mmol g(-1) h(-1) and an apparent quantum yield of 29.2% at 420 nm, which was about 5.02 times higher than that of pure Mn0.2Cd0.8S and 1.79 times than that of Mn0.2Cd0.8S/Pt-1.5 wt%. Moreover, the Mn0.2Cd0.8S/CoP3 composite exhibited excellent photostability. The superior photocatalytic activity of Mn0.2Cd0.8S/CoP3 composite was predominantly attributed to the synergistic effects of highly efficient charge separation efficiency and sufficient active sites for H-2 evolution reaction. This work revealed that low-cost CoP3 can replace noble metal Pt as a highly efficient co-catalyst for enhancing the photocatalytic activity of semiconductor materials.