Yadav Thakur Prasad, Woellner Cristiano F, Sharifi Tiva, Sinha Shyam Kanta, Qu Lu-Lu, Apte Amey, Mukhopadhyay N K, Srivastava O N, Vajtai Robert, Galvão Douglas Soares, Tiwary Chandra Sekhar, Ajayan Pulickel M
Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States.
Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
ACS Nano. 2020 Jun 23;14(6):7435-7443. doi: 10.1021/acsnano.0c03081. Epub 2020 Jun 9.
Atomically thin metallic alloys are receiving increased attention due to their prospective applications as interconnects/contacts in two-dimensional (2D) circuits, sensors, and catalysts, among others. In this work, we demonstrate an easily scalable technique for the synthesis of 2D metallic alloys from their 3D quasicrystalline precursors. We have used aluminum (Al)-based single-phase decagonal quasicrystal AlCoCu alloy to extract the corresponding 2D alloy structure. The 2D layered Al alloy possesses 2-fold decagonal quasicrystalline symmetry and consists of two- or three-layer-thick sheets with a lateral dimension of microns. These 2D metallic layers were combined with the atomic layers of tungsten disulfide to form the stacked heterostructures, which is demonstrated to be a stable and efficient catalyst for hydrogen evolution reaction.
原子级薄的金属合金因其在二维（2D）电路、传感器和催化剂等领域作为互连/触点的潜在应用而受到越来越多的关注。在这项工作中，我们展示了一种易于扩展的技术，用于从其三维准晶前驱体合成二维金属合金。我们使用了铝（Al）基单相十边形准晶AlCoCu合金来提取相应的二维合金结构。二维层状铝合金具有二重十边形准晶对称性，由两到三层厚的薄片组成，横向尺寸为微米级。这些二维金属层与二硫化钨的原子层结合形成堆叠异质结构，该结构被证明是一种用于析氢反应的稳定且高效的催化剂。
