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首页> 外文期刊>Journal of the American Chemical Society >Metal-Organic Framework Hexagonal Nanoplates: Bottom-up Synthesis, Topotactic Transformation, and Efficient Oxygen Evolution Reaction
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Metal-Organic Framework Hexagonal Nanoplates: Bottom-up Synthesis, Topotactic Transformation, and Efficient Oxygen Evolution Reaction

机译：金属有机骨架六边形纳米板：自下而上的合成，全能转化和有效的放氧反应

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摘要

Rational design and bottom-up synthesis based on the structural topology is a promising way to obtain two-dimensional metal-organic frameworks (2D MOFs) in well-defined geometric morphology. Herein, a topology-guided bottom-up synthesis of a novel hexagonal 2D MOF nanoplate is realized. The hexagonal channels constructed via the distorted (3,4)-connected Ni_2(BDC)_2(DABCO) (BDC = 1,4-benzenedicarboxylic acid, DABCO = 1,4-diazabicydo[2.2.2]octane) framework serve as the template for the specifically designed morphology. Under the inhibition and modulation of pyridine through a substitution-suppression process, the morphology can be modified from hexagonal nanorods to nanodisks and to nanoplates with controllable thickness tuned by the dosage of pyridine. Subsequent pyrolysis treatment converts the nanoplates into a N-doped Ni@carbon electrocatalyst, which exhibits a small overpotential as low as 307 mV at a current density of 10 mA cm~(-2) in the oxygen evolution reaction.
机译：基于结构拓扑的合理设计和自下而上的合成是一种获得具有明确定义的几何形态的二维金属有机框架（2D MOF）的有前途的方法。在本文中，实现了一种新型的六角形二维MOF纳米板的拓扑结构导向的自下而上的合成。通过扭曲的（3,4）连接的Ni_2（BDC）_2（DABCO）（BDC = 1,4-苯二甲酸，DABCO = 1,4-二氮杂双[2.2.2]辛烷）构筑的六边形通道用作专门设计的形态的模板。在吡啶通过取代-抑制过程的抑制和调节下，可以将形态从六角形的纳米棒修饰为纳米盘，并通过吡啶的剂量调节其厚度可控制的纳米板。随后的热解处理将纳米板转化为N掺杂的Ni @碳电催化剂，在氧析出反应中，在10 mA cm〜（-2）的电流密度下，它呈现出低至307 mV的小过电位。

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  • 来源
    《Journal of the American Chemical Society》 |2020年第16期|7317-7321|共5页
  • 作者

    Yifan Lin; Hao Wan; Dan Wu; Gen Chen; Ning Zhang; Xiaohe Liu; Junhui Li; Yijun Cao; Guanzhou Qiu; Renzhi Ma;

  • 作者单位

    State Key Laboratory of Powder Metallurgy School of Materials Science and Engineering Central South University Changsha Hunan 410083 People's Republic of China;

    Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou University Zhengzhou Henan 450001 People's Republic of China;

    School of Minerals Processing and Bioengineering Central South University Changsha Hunan 410083 People's Republic of China;

    International Center for Materials Nanoarchitectonics National Institute for Materials Science Ibaraki 305-0044 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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