Cadmium Sulfide and Nickel Synergetic Co-catalysts Supported on Graphitic Carbon Nitride for Visible-Light-Driven Photocatalytic Hydrogen Evolution.
Cadmium Sulfide and Nickel Synergetic Co-catalysts Supported on Graphitic Carbon Nitride for Visible-Light-Driven Photocatalytic Hydrogen Evolution.
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DOI：
10.1038/srep22268
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发表时间：
2016-02-29
影响因子：
4.6
通讯作者：
Qiu S
中科院分区：
文献类型：
--
作者：
Yue X;Yi S;Wang R;Zhang Z;Qiu S
无贵金属光催化剂的设计和制备对于光催化分解水资源利用具有重要意义。在这里，我们报告了高可见光驱动的析氢上的混合光催化剂系统组成的CdS纳米晶体和Ni@NiO纳米颗粒生长在g-C3 N4的表面上。在可见光照射下，在三乙醇胺作为牺牲电子供体的存在下，该混合系统显示出1258.7 μmol h−1 g−1的高H2-产生速率。对协同催化机理进行了研究，光伏和光致发光性能的测试结果表明，g-C3 N4与CdS纳米晶之间可以实现有效的电子转移，进而实现电子转移到Ni@NiO杂化材料中。
Design and preparation of noble-metal-free photocatalysts is of great importance for photocatalytic water splitting harvesting solar energy. Here, we report the high visible-light-driven hydrogen evolution upon the hybrid photocatalyst system consisting of CdS nanocrystals and Ni@NiO nanoparticles grown on the surface of g-C3N4. The hybrid system shows a high H2-production rate of 1258.7 μmol h−1 g−1 in the presence of triethanolamine as a sacrificial electron donor under visible light irradiation. The synergetic catalytic mechanism has been studied and the results of photovoltaic and photoluminescence properties show that efficient electron transfer could be achieved from g-C3N4 to CdS nanocrystals and subsequently to Ni@NiO hybrid.