Large-Area, Free-Standing, Two-Dimensional Supramolecular Polymer Single-Layer Sheets for Highly Efficient Electrocatalytic Hydrogen Evolution
Large-Area, Free-Standing, Two-Dimensional Supramolecular Polymer Single-Layer Sheets for Highly Efficient Electrocatalytic Hydrogen Evolution
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DOI：
10.1002/anie.201506048
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发表时间：
2015-10-05
影响因子：
16.6
通讯作者：
Feng, Xinliang
中科院分区：
文献类型：
--
作者：
Dong, Renhao;Pfeffermann, Martin;Feng, Xinliang
共价或非共价有机二维纳米片的合理构建是一个迷人的目标，因为它们在电子学，膜技术，催化，传感和能源技术中有着广阔的应用前景。在此，通过使用Langmuir-Blodgett方法容易地制备了包含三苯基稠合的镍双（二硫杂环戊烯）络合物的大面积（平方毫米）和自支撑的2D超分子聚合物（2DSP）单层片（厚度为0.7- 0.9nm）。这种2DSP表现出优异的电催化活性，在10 mA cm（-2）下的Tafel斜率为80.5 mV decade（-1），过电位为333 mV，上级最近报道的碳纳米管负载的分子催化剂和杂原子掺杂的石墨烯催化剂。这项工作对于开发用于能源技术的新型自支撑有机2D材料是有希望的。
The rational construction of covalent or noncovalent organic two-dimensional nanosheets is a fascinating target because of their promising applications in electronics, membrane technology, catalysis, sensing, and energy technologies. Herein, a large-area (square millimeters) and free-standing 2D supramolecular polymer (2DSP) single-layer sheet (0.7-0.9 nm in thickness), comprising triphenylene-fused nickel bis(dithiolene) complexes has been readily prepared by using the Langmuir-Blodgett method. Such 2DSPs exhibit excellent electrocatalytic activities for hydrogen generation from water with a Tafel slope of 80.5 mV decade(-1) and an overpotential of 333 mV at 10 mA cm(-2), which are superior to that of recently reported carbon nanotube supported molecular catalysts and heteroatom-doped graphene catalysts. This work is promising for the development of novel free-standing organic 2D materials for energy technologies.