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Controlled Growing of Graphdiyne Film for Friction Reduction and Antiwear
ACS Nano ( IF 15.8 ) Pub Date : 2023-04-19 , DOI: 10.1021/acsnano.2c12422 Peiwei Gong 1, 2 , Juan Li 1, 2 , Junyi Wang 2 , Wei Wu 2 , Cheng Li 1 , Dandan Wang 1 , Junqin Shi 2 , Jianxi Liu 2 , Feng Zhou 3 , Weimin Liu 2, 3
ACS Nano ( IF 15.8 ) Pub Date : 2023-04-19 , DOI: 10.1021/acsnano.2c12422 Peiwei Gong 1, 2 , Juan Li 1, 2 , Junyi Wang 2 , Wei Wu 2 , Cheng Li 1 , Dandan Wang 1 , Junqin Shi 2 , Jianxi Liu 2 , Feng Zhou 3 , Weimin Liu 2, 3
Affiliation
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Like the multilayered graphene which is the most widely used solid lubricant, graphdiyne (GDY) as a 2D material holds potential similar prospects but has been rarely researched so far. One reason is that growing a GDY film in a controllable manner on diverse material surfaces remains a great challenge. To address the issue, a catalytic pregrowth and solution polymerization method is developed to synthesize a GDY film on various substrates. It allows fine control over film structure and thickness. A macroscopic ultralow friction coefficient of 0.08 is obtained, and a relatively long life of more than 5 h under a high load of 1378 MPa is achieved. Molecular dynamics simulations together with the surface analysis demonstrate that the increased deformation degree and weakened relative motion between GDY layers contribute to the low friction. Especially, different from graphene, the friction of GDY exhibits a double increase and decrease in one period of λ ≈ 8–9 Å, and it is roughly equal to the distance between two adjacent alkyne bonds in the x direction, indicating GDY’s structure and lattice play an important role in reducing friction.
中文翻译：
用于减摩抗磨的石墨烯薄膜的可控生长
与应用最广泛的固体润滑剂多层石墨烯一样，石墨炔（GDY）作为一种二维材料具有类似的潜在前景，但迄今为止很少有人对其进行研究。一个原因是在不同的材料表面以可控的方式生长 GDY 薄膜仍然是一个巨大的挑战。为了解决这个问题，开发了一种催化预生长和溶液聚合方法，以在各种基板上合成 GDY 薄膜。它允许精细控制薄膜结构和厚度。获得了0.08的宏观超低摩擦系数，在1378 MPa的高载荷下实现了5 h以上的较长寿命。分子动力学模拟和表面分析表明，GDY 层之间变形程度的增加和相对运动的减弱有助于低摩擦。x方向，表明GDY的结构和晶格在减少摩擦方面起着重要作用。
更新日期：2023-04-19
中文翻译：
用于减摩抗磨的石墨烯薄膜的可控生长
与应用最广泛的固体润滑剂多层石墨烯一样，石墨炔（GDY）作为一种二维材料具有类似的潜在前景，但迄今为止很少有人对其进行研究。一个原因是在不同的材料表面以可控的方式生长 GDY 薄膜仍然是一个巨大的挑战。为了解决这个问题，开发了一种催化预生长和溶液聚合方法，以在各种基板上合成 GDY 薄膜。它允许精细控制薄膜结构和厚度。获得了0.08的宏观超低摩擦系数，在1378 MPa的高载荷下实现了5 h以上的较长寿命。分子动力学模拟和表面分析表明，GDY 层之间变形程度的增加和相对运动的减弱有助于低摩擦。x方向，表明GDY的结构和晶格在减少摩擦方面起着重要作用。
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