In-situ preparation of porous carbon nanosheets loaded with metal chalcogenides for a superior oxygen evolution reaction
In-situ preparation of porous carbon nanosheets loaded with metal chalcogenides for a superior oxygen evolution reaction
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原位制备负载金属硫属化物的多孔碳纳米片以实现优异的析氧反应
DOI：
10.1016/j.carbon.2019.04.048
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发表时间：
2019-08-01
期刊：
影响因子：
10.9
通讯作者：
Fu, Ruowen
中科院分区：
文献类型：
--
作者：
Du, Yang;Khan, Shaukat;Fu, Ruowen
当今，由于许多现代材料的性能从根本上取决于对板状结构的开发，因此巧妙地设计板状结构变得越来越重要。在这项工作中，我们已经成功地开发了一种简单有效的策略，用于制造一类二维多孔碳纳米片，同时表现出高表面积和均匀分布的金属硫属化物的上级析氧反应。这些2D碳纳米片的合成涉及通过聚合物片的磺酸根进行原位金属离子吸附和交换，然后碳化以形成一系列负载金属硫属化物的多孔碳纳米片（PCN/MxSy）。丰富的中孔（例如，3-7 nm，524 m（2）g（-1））有利于杂原子位点的暴露。原位形成的均匀催化位（33.8 nm）有效地避免了功能组分的团聚，有利于催化位的充分利用，从而表现出优异的OER性能。我们希望我们的新策略可以为制备2D多孔碳纳米片在储能、吸附、催化、分离等广泛领域的应用和创新打开一扇新的大门。（C）2019 Elsevier Ltd.版权所有。
Nowadays, it has been more and more important to ingeniously design sheet-like structures since the performance of many modern materials fundamentally depends upon the exploitation of these structures. In this work, we have successfully developed a facile and effective strategy for fabricating a class of 2D porous carbon nanosheets that simultaneously exhibit high surface areas and uniform distribution of metal chalcogenides for superior oxygen evolution reaction. The synthesis of these 2D carbon nanosheets involves the in-situ metal ion adsorption and exchange by the sulfonate radicals of polymer sheets followed by carbonization to form a series of metal chalcogenides loaded porous carbon nanosheets (PCNs/MxSy). The abundant mesopores (e.g., 3-7 nm, 524 m(2) g(-1)) that derived from the spontaneous stacking of flexible GO precursor are advantageous to the exposure of heteroatom sites. The uniform catalytic sites (33.8 nm) formed in-situ effectively avoid the agglomeration of functional components, which are conducive to make full use of catalytic sites and consequently shows excellent OER performance. We hope that our novel strategy can open a new door for the application and innovation of fabricating 2D porous carbon nanosheets in a wide range of areas including energy storage, adsorption, catalysis, separation and so on. (C) 2019 Elsevier Ltd. All rights reserved.