Hydrogenated Defects in Graphitic Carbon Nitride Nanosheets for Improved Photocatalytic Hydrogen Evolution
Hydrogenated Defects in Graphitic Carbon Nitride Nanosheets for Improved Photocatalytic Hydrogen Evolution
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DOI：
10.1021/acs.jpcc.5b03538
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发表时间：
2015-07-09
影响因子：
3.7
通讯作者：
Maschmeyer, Thomas
中科院分区：
文献类型：
--
作者：
Li, Xiaobo;Hartley, Gareth;Maschmeyer, Thomas
通过高温H-2处理在该处理过程中引入缺陷的块状氮化碳来制备层压氮化碳纳米片。虽然缺陷可以作为电荷载流子的陷阱，减少光致发光寿命，但它们也形成了高度活性的光催化析氢位点。由于分层、缺陷的存在和相关的带隙变化之间的协同效应，纳米结构材料表现出显著增强的光催化活性。
laminated carbon nitride nanosheets were prepared by high-temperature H-2 treatment of bulk carbon nitride with defects being introduced during this treatment. Although the defects can act as traps for charge carriers, reducing photoluminescence lifetime, they also form highly active photocatalytic sites for hydrogen evolution. The nanostructured materials exhibit substantially enhanced photocatalytic activity due to a synergistic effect between delamination, the presence of defects, and associated band gap changes.