Ultra-high thermal stability of sputtering reconstructed Cu-based catalysts

Jiafeng Yu, Xingtao Sun, Xin Tong, Jixin Zhang, Jie Li, Shiyan Li, Yuefeng Liu (), Noritatsu Tsubaki (), Takayuki Abe and Jian Sun ()
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Jiafeng Yu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Xingtao Sun: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Xin Tong: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jixin Zhang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jie Li: School of Chemistry and Chemical Engineering, Yangzhou University
Shiyan Li: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Yuefeng Liu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Noritatsu Tsubaki: School of Engineering, University of Toyama, Gofuku 3190
Takayuki Abe: Hydrogen Isotope Research Center, University of Toyama, Gofuku 3190
Jian Sun: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract The rational design of high-temperature endurable Cu-based catalysts is a long-sought goal since they are suffering from significant sintering. Establishing a barrier on the metal surface by the classical strong metal-support interaction (SMSI) is supposed to be an efficient way for immobilizing nanoparticles. However, Cu particles were regarded as impossible to form classical SMSI before irreversible sintering. Herein, we fabricate the SMSI between sputtering reconstructed Cu and flame-made LaTiO2 support at a mild reduction temperature, exhibiting an ultra-stable performance for more than 500 h at 600 °C. The sintering of Cu nanoparticles is effectively suppressed even at as high as 800 °C. The critical factors to success are reconstructing the electronic structure of Cu atoms in parallel with enhancing the support reducibility, which makes them adjustable by sputtering power or decorated supports. This strategy will extremely broaden the applications of Cu-based catalysts at more severe conditions and shed light on establishing SMSI on other metals.

Date: 2021
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DOI: 10.1038/s41467-021-27557-1

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