Citation: Xin-Yue LIU, Shuai LÜ, Yu-Hua ZHANG, Jin-Lin LI, Li WANG. Controlled construction of Co₃Mn₁ nanocrystals on one-dimensional ZnO surfaces for catalytic performance of CO oxidation[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(5): 853-858. doi: 10.11862/CJIC.2023.048 shu

Controlled construction of Co₃Mn₁ nanocrystals on one-dimensional ZnO surfaces for catalytic performance of CO oxidation

Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China

Corresponding author: Li WANG, li.wang@scuec.edu.cn
Received Date: 18 November 2022
Revised Date: 13 February 2023

Figures(7)

We have prepared well-defined supported nanocrystal catalysts using a thermal decomposition method.One dimensional ZnO nanorods were used as crystalline seeds during nanocrystal nucleation and growth.The growth of nanocrystals with different components on the surface of ZnO nanorods was systematically controlled.Moreover, well-defined MnO/ZnO, Co₃O₄/ZnO, and Co₃Mn₁/ZnO catalysts were synthesized by a modified thermal decomposition approach.Transmission electron microscope(TEM)and X ray powder diffraction(XRD)results showed that different nanocrystals were uniformly dispersed on the surface of assynthesized ZnO nanorods.The Co₃Mn₁/ZnO catalyst exhibited the best catalytic performance of CO oxidation compared to the MnO/ZnO and Co₃O₄/ZnO catalysts.The Co₃Mn₁/ZnO catalyst can easily catalyze CO oxidation at a lower temperature(50 ℃)with sustain- able durability.Moreover, the T₁₀₀(the temperature when CO conversion reached 100%)of Co₃Mn₁/ZnO catalyst was 200 ℃ at gas hourly space velocity of 200 L·g_cat^-1·h^-1.The surface characterization of the different catalysts was per- formed by using X-ray photoelectron spectroscopy(XPS).The results revealed that the Co₃Mn₁/ZnO catalyst had ap- proximately 30% more oxygen vacancy compared to the MnO/ZnO catalyst, resulting in a higher catalytic activity of the CO oxidation reaction.More importantly, the Co₃Mn₁/ZnO catalyst had a much lower apparent activation barrier(39.4 kJ·mol^-1)than the other supported nanocrystal catalysts.
- CO oxidation,
- ZnO,
- Co₃O₄,
- CoMn nanocrystals
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Controlled construction of Co3Mn1 nanocrystals on one-dimensional ZnO surfaces for catalytic performance of CO oxidation

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Controlled construction of Co₃Mn₁ nanocrystals on one-dimensional ZnO surfaces for catalytic performance of CO oxidation