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

Nature Communications
Kaipeng LiuTao Zhang

Abstract

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 RuO2 powders by physical mixing of sub-micron RuO2 aggregates with a MgAl1.2Fe0.8O4 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.

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Citations

Feb 21, 2021·Nature Communications·Yaxin ChenXingfu Tang
Mar 9, 2021·The Journal of Physical Chemistry Letters·Yutong ZhaoYijiao Jiang
Mar 26, 2021·Advanced Materials·Haifeng XiongYong Wang
May 2, 2020·The Journal of Physical Chemistry Letters·Ke YeGuozhen Zhang
Aug 14, 2020·Chemical Reviews·Ruixuan QinNanfeng Zheng
Oct 29, 2020·Chemical Reviews·Rui LangTao Zhang
Oct 14, 2021·Chemical Reviews·Baljeet SinghRadek Zbořil

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Methods Mentioned

BETA
transmission electron microscopy
X-ray
electron microscopy
chips

Software Mentioned

Vienna Ab - initio Simulation Package ( VASP )

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