In situ fabrication of Cu-Mn-O nanostructure catalysts on Ti mesh and their catalytic property optimization for low-temperature and stable CO oxidation

Ruishi Zhang; Yang Zhou; Yunheng Li; Jing Li; Xinyue Tang; Baodan Liu

doi:10.1088/1361-6528/ace44b

In situ fabrication of Cu-Mn-O nanostructure catalysts on Ti mesh and their catalytic property optimization for low-temperature and stable CO oxidation

Nanotechnology. 2023 Jul 24;34(41). doi: 10.1088/1361-6528/ace44b.

Authors

Ruishi Zhang¹, Yang Zhou², Yunheng Li¹, Jing Li^{3

4}, Xinyue Tang⁵, Baodan Liu^{3

4}

Affiliations

¹ Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, Bowen Road, Yingkou, 115014, People's Republic of China.
² Luoyang Ship Material Research Institute, Luoyang, 471023, People's Republic of China.
³ School of Material Science and Engineering, Northeastern University, No.11 Wenhua Road, Shenyang 110819, People's Republic of China.
⁴ Foshan Graduate School of Northeastern University, No. 2 Zhihui Road, Foshan 528311, People's Republic of China.
⁵ School of Materials Science and Engineering, Shenyang Ligong University, Shenyang, Liaoning 110159, People's Republic of China.

PMID: 37406617
DOI: 10.1088/1361-6528/ace44b

Abstract

A series of interlaced 'tripe-shaped' nanoflake catalysts made of CuMn₂O₄werein situprepared on Ti mesh substrate through the associated methods of plasma electrolyte oxidation and hydrothermal technique. The surface morphology, elemental distribution and chemical state, phase composition and microstructure of CuMn₂O₄nanostructures prepared under different conditions were systemically investigated. To evaluate the catalytic activity, the CO oxidation as a probe reaction was used, and the results showed that 12h-Cu1Mn2-300 (hydrothermal reaction at 150 °C for 12 h, Cu/Mn = 1/2 in initial precursor, heat treatment temperature at 300 °C) exhibited the best CO oxidation capability withT₁₀₀= 150 °C owe to the formation of uniform CuMn₂O₄nanosheet layersin situgrown on flexible Ti mesh and the synergistic effect of Cu and Mn species in spinel CuMn₂O₄, which makes it more active towards CO oxidation than pure copper/manganese oxides.

Keywords: CuMn2O4 nanostructures; in situ growth; low-temperature CO oxidation; monolithic catalysts.