查找使用阿拉丁产品的科研文献

Strong metal-support interaction promoted scalable production of thermally stable single-atom catalysts

Liu Kaipeng,Zhao Xintian,Ren Guoqing,Yang Tao,Ren Yujing,Lee Adam Fraser,Su Yang,Pan Xiaoli,Zhang Jingcai,Chen Zhiqiang,Yang Jingyi,Liu Xiaoyan,Zhou Tong,Xi Wei,Luo Jun,Zeng Chaobin,Matsumoto Hiroaki,Liu Wei,Jiang Qike,Wilson Karen,Wang Aiqin,Qiao Botao,Li Weizhen,Zhang Tao

Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially in a simple and scalable way, remains a formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO 2 powders by physical mixing of sub-micron RuO 2 aggregates with a MgAl 1.2 Fe 0.8 O 4 spinel. Atomically dispersed Ru is confirmed by aberration-corrected scanning transmission electron microscopy and X-ray absorption spectroscopy. Detailed studies reveal that the dispersion process does not arise from a gas atom trapping mechanism, but rather from anti-Ostwald ripening promoted by a strong covalent metal-support interaction. This synthetic strategy is simple and amenable to the large-scale manufacture of thermally stable SACs for industrial applications.