Chemically Robust, Cu-based Porous Coordination Polymer Nanosheets for Efficient Hydrogen Evolution: Experimental and Theoretical Studies
Chemically Robust, Cu-based Porous Coordination Polymer Nanosheets for Efficient Hydrogen Evolution: Experimental and Theoretical Studies
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用于高效析氢的化学稳定性强的铜基多孔配位聚合物纳米片：实验和理论研究
DOI：
10.1021/acsami.9b04471
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发表时间：
2019
影响因子：
9.5
通讯作者：
Xu Qiang
中科院分区：
文献类型：
--
作者：
Zhou Bihang;Zheng Jia-jia;Duan Jingui;Hou Chunchao;Wang Yang;Jin Wanqin;Xu Qiang
多孔配位聚合物（PCP）纳米片由于具有极高的活性中心和较短的扩散路径，在能量转换和传质等方面有着广泛的应用前景。然而，开发具有致密活性位点和大横向尺寸的化学稳定的五氯苯酚纳米片在可行性考虑方面是一个巨大的挑战。在此，我们首先通过自下而上和自上而下的整合策略设计并制备了一种化学稳定的PCP纳米片。该纳米片具有密集暴露和周期性的Cu 2+活性中心（2.1 × 106个/μm2），以及纳米性质（5 nm）和显著的孔（18 nm），表现出显著的电催化析氢性能。提出了一个合理的反应过程，并通过密度泛函理论计算验证了Cu 2+活性中心的作用.
Due to the extremely high number of accessible active sites and short diffusion path, porous coordination polymer (PCP) nanosheets have demonstrated a variety of promising applications, especially for energy conversion and mass transfer. However, the development of chemically stable PCP nanosheets with dense active sites and large lateral size is a great challenge in terms of feasible considerations. Herein, we first designed and prepared a kind of chemically stable PCP nanosheets via a bottom-up and a top-down integral strategy. Featuring densely exposed and periodic Cu2+active sites (2.1 × 106per μm2), as well as ultrathin nature (5 nm) and significant pores (18 Å), this nanosheet demonstrated remarkable performance of electrocatalytic hydrogen evolution. Furthermore, one plausible process and the effect of Cu2+active sites were proposed and validated by density functional theory calculations.