Mechanochemical Kilogram-Scale Synthesis of Noble Metal Single-Atom Catalysts
Mechanochemical Kilogram-Scale Synthesis of Noble Metal Single-Atom Catalysts
复制标题
贵金属单原子催化剂的机械化学公斤级合成
DOI：
10.1016/j.xcrp.2019.100004
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发表时间：
2020-01-22
影响因子：
8.9
通讯作者：
Ma, Ding
中科院分区：
文献类型：
--
作者：
He, Xiaohui;Deng, Yuchen;Ma, Ding
单原子催化剂因其上级催化性能而受到广泛关注。然而，仍然需要一种用于大规模合成SAC的简易制造方法。本研究报告了一种机械化学方法用于贵金属SAC的大量生产。通过像差校正的高角度环形暗场扫描透射电子显微镜和X射线吸收光谱验证了原子分散的钯物种在氧化锌（Pd-1/ZnO）上的成功形成。此外，我们的方法在10- 1，000 g范围内对Pd-1/ZnO的大规模生产表现出很小的放大效果，其中催化剂结构和催化性能得以保留。同时，该方法的通用性通过Rh和Ru SAC以及Pd-1/Cu单原子合金的大规模制备得到了证明。因此，这种有前途的策略提供了具有成本效益的大规模生产的SAC的潜力，并随后可能打开一个窗口，其工业应用。
Single-atom catalysts (SACs) have attracted broad interest recently due to the superior catalytic properties. However, a facile fabrication method for the largescale synthesis of SACs is still in demand. This study reports a mechanochemical approach for the mass production of noble metal SACs. The successful formation of atomically dispersed palladium species on zinc oxide (Pd-1/ZnO) was verified by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption spectroscopy. Furthermore, our method exhibited little scaling-up effect on the mass production of Pd-1/ZnO at ranges of 10-1,000 g, in which the catalyst structure and catalytic performance were retained. Meanwhile, the versatility of this approach was demonstrated by the large-scale fabrication of Rh and Ru SACs, and Pd-1/Cu single-atom alloys. Thus, this promising strategy provides the potential for costeffective mass production of SACs and subsequently may open a window for their industrial application.