Two dimensional covalent organic frameworks (2D COFs) are unique class of crystalline porous polymers which are formed by the covalent bonding between the organic building blocks. Their layers are stacked to each other by non‐covalent interactions. The stacking sequence between the layers is highly significant towards various applications. In this article, we have prepared ruthenium ions encapsulated 2D COF (Ru@COF) from a synthesized COF. We have performed an electrochemical hydrogen evolution reaction using Ru@COF as electrocatalyst. Moreover, Ru@COF shows better electrochemical hydrogen evolution reaction (HER) activity compared to bare RuCl₃ and COF. The HER activities are measured in 1.5 M H₂SO₄ medium. Ru@COF shows onset potential 159 mV with the Tafel slope of 79 mV dec⁻¹. The linear Tafel plot with the slope 79 mV dec⁻¹ indicates Volmer‐Heyrovsky‐Tafel mechanism for the Ru@COF catalysed HER. COF plays a crucial role in maintaining stability and catalytic efficiency of the material. Interestingly, Ru@COF acts as exemplary electrocatalyst material that is used as solid binder‐free cathodic electrode on glassy carbon electrode surface.

中文翻译：

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使用钌封装的二维共价有机骨架（2D COF）电化学上容易的氢释放

二维共价有机骨架（2D COF）是一类独特的晶体多孔聚合物，它是通过有机结构单元之间的共价键形成的。它们的层通过非共价相互作用彼此堆叠。层之间的堆叠顺序对于各种应用而言非常重要。在本文中，我们从合成的COF中制备了封装2D COF（Ru @ COF）的钌离子。我们已经使用Ru @ COF作为电催化剂进行了电化学制氢反应。而且，Ru @ COF与裸露的RuCl ₃和COF相比，表现出更好的电化学氢释放反应（HER）活性。HER活性在1.5 MH ₂ SO ₄中测量中等的。Ru @ COF的起始电位为159 mV，Tafel斜率为79 mV dec ^-1。斜率79 mV dec ^-1的线性Tafel图表明Ru @ COF催化的HER的Volmer-Heyrovsky-Tafel机理。COF在维持材料的稳定性和催化效率方面起着至关重要的作用。有趣的是，Ru @ COF可以作为示例性的电催化剂材料，用作玻璃碳电极表面上的无固体粘结剂阴极电极。