Co3O4-modified 3DOM LaFe0.6Mg0.4O3 perovskite as robust catalysts for soot oxidation

Nengjie Feng; Xiaodi Zhang; Lingling Ren; Pengfei Zhang; Mingjuan Han; Yujie Wang; Hui Wan; Guofeng Guan

doi:10.1016/j.surfin.2024.105003

Co₃O₄-modified 3DOM LaFe_0.6Mg_0.4O₃ perovskite as robust catalysts for soot oxidation

Nengjie Feng, Xiaodi Zhang, Lingling Ren, Pengfei Zhang, Mingjuan Han, Yujie Wang, Hui Wan, Guofeng Guan

COLLEGE OF CHEMICAL ENGINEERING

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this study, 3DOM LaFe_0.6Mg_0.4O₃ perovskite was prepared using a colloidal crystal template technique and subsequently decorated with Co₃O₄ for soot combustion. The results indicated that the LaFe_0.6Mg_0.4O₃ perovskite with three-dimensional ordered macropores structure could facilitate the dispersion of Co₃O₄, boost the number of active sites for soot combustion, and significantly enhance the contact efficiency between the catalyst and soot. The interaction between Co₃O₄ and perovskite created additional oxygen vacancies and enhanced the redox ability of the catalysts. Meanwhile, the presence of Co₃O₄ facilitated the adsorption and activation of O₂, which could accelerate the oxidation of soot particles. Notably, the 2.5 %Co/LaFe_0.6Mg_0.4O₃ catalyst exhibited the highest performance, achieving a T₅₀ of 407 °C for soot combustion in the presence of 500 ppm NO and 5 % O₂. The catalyst also demonstrated excellent stability and water resistance, making it a promising candidate for practical applications.

Original language	English
Article number	105003
Journal	Surfaces and Interfaces
Volume	53
DOIs	https://doi.org/10.1016/j.surfin.2024.105003
State	Published - Oct 2024

Keywords

3DOM
CoO
Oxygen vacancies
Perovskite
Soot combustion

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title = "Co3O4-modified 3DOM LaFe0.6Mg0.4O3 perovskite as robust catalysts for soot oxidation",

abstract = "In this study, 3DOM LaFe0.6Mg0.4O3 perovskite was prepared using a colloidal crystal template technique and subsequently decorated with Co3O4 for soot combustion. The results indicated that the LaFe0.6Mg0.4O3 perovskite with three-dimensional ordered macropores structure could facilitate the dispersion of Co3O4, boost the number of active sites for soot combustion, and significantly enhance the contact efficiency between the catalyst and soot. The interaction between Co3O4 and perovskite created additional oxygen vacancies and enhanced the redox ability of the catalysts. Meanwhile, the presence of Co3O4 facilitated the adsorption and activation of O2, which could accelerate the oxidation of soot particles. Notably, the 2.5 %Co/LaFe0.6Mg0.4O3 catalyst exhibited the highest performance, achieving a T50 of 407 °C for soot combustion in the presence of 500 ppm NO and 5 % O2. The catalyst also demonstrated excellent stability and water resistance, making it a promising candidate for practical applications.",

keywords = "3DOM, CoO, Oxygen vacancies, Perovskite, Soot combustion",

author = "Nengjie Feng and Xiaodi Zhang and Lingling Ren and Pengfei Zhang and Mingjuan Han and Yujie Wang and Hui Wan and Guofeng Guan",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = oct,

doi = "10.1016/j.surfin.2024.105003",

language = "英语",

volume = "53",

journal = "Surfaces and Interfaces",

issn = "2468-0230",

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TY - JOUR

T1 - Co3O4-modified 3DOM LaFe0.6Mg0.4O3 perovskite as robust catalysts for soot oxidation

AU - Feng, Nengjie

AU - Zhang, Xiaodi

AU - Ren, Lingling

AU - Zhang, Pengfei

AU - Han, Mingjuan

AU - Wang, Yujie

AU - Wan, Hui

AU - Guan, Guofeng

PY - 2024/10

Y1 - 2024/10

N2 - In this study, 3DOM LaFe0.6Mg0.4O3 perovskite was prepared using a colloidal crystal template technique and subsequently decorated with Co3O4 for soot combustion. The results indicated that the LaFe0.6Mg0.4O3 perovskite with three-dimensional ordered macropores structure could facilitate the dispersion of Co3O4, boost the number of active sites for soot combustion, and significantly enhance the contact efficiency between the catalyst and soot. The interaction between Co3O4 and perovskite created additional oxygen vacancies and enhanced the redox ability of the catalysts. Meanwhile, the presence of Co3O4 facilitated the adsorption and activation of O2, which could accelerate the oxidation of soot particles. Notably, the 2.5 %Co/LaFe0.6Mg0.4O3 catalyst exhibited the highest performance, achieving a T50 of 407 °C for soot combustion in the presence of 500 ppm NO and 5 % O2. The catalyst also demonstrated excellent stability and water resistance, making it a promising candidate for practical applications.

AB - In this study, 3DOM LaFe0.6Mg0.4O3 perovskite was prepared using a colloidal crystal template technique and subsequently decorated with Co3O4 for soot combustion. The results indicated that the LaFe0.6Mg0.4O3 perovskite with three-dimensional ordered macropores structure could facilitate the dispersion of Co3O4, boost the number of active sites for soot combustion, and significantly enhance the contact efficiency between the catalyst and soot. The interaction between Co3O4 and perovskite created additional oxygen vacancies and enhanced the redox ability of the catalysts. Meanwhile, the presence of Co3O4 facilitated the adsorption and activation of O2, which could accelerate the oxidation of soot particles. Notably, the 2.5 %Co/LaFe0.6Mg0.4O3 catalyst exhibited the highest performance, achieving a T50 of 407 °C for soot combustion in the presence of 500 ppm NO and 5 % O2. The catalyst also demonstrated excellent stability and water resistance, making it a promising candidate for practical applications.

KW - 3DOM

KW - CoO

KW - Oxygen vacancies

KW - Perovskite

KW - Soot combustion

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U2 - 10.1016/j.surfin.2024.105003

DO - 10.1016/j.surfin.2024.105003

M3 - 文章

AN - SCOPUS:85202885576

SN - 2468-0230

VL - 53

JO - Surfaces and Interfaces

JF - Surfaces and Interfaces

M1 - 105003

ER -

Co₃O₄-modified 3DOM LaFe_0.6Mg_0.4O₃ perovskite as robust catalysts for soot oxidation

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Keywords

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