Modulation mechanism of Mn-O strength in α-MnO2 catalyst for high-efficiency catalytic combustion of propane

Song, Shengnan; Wen, Meicheng; Zhao, Weina; Kong, Jiejing; Li, Guiying; An, Taicheng

doi:10.1016/j.apcatb.2024.124120

Applied Catalysis B: Environment and Energy

2024

DOI: 10.1016/j.apcatb.2024.124120

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Modulation mechanism of Mn-O strength in α-MnO2 catalyst for high-efficiency catalytic combustion of propane

Shengnan Song,

Meicheng Wen,

Weina Zhao

et al.

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Cited by 7 publications

References 46 publications

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Electrostatically Induced Non‐Uniform Surface Charges Enhancing HCHO Catalytic Oxidation Based on Elastic Sponge Catalyst

Zheng,

Liu,

Han

et al. 2024

Adv Funct Materials

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Transition metal oxide shows great potential in catalytic formaldehyde (HCHO) pollution degradation at room temperature, while it is still difficult to overcome the efficiency attenuation caused by limited reactive oxygen species (ROS) generation during catalysis. An elastic spongy catalyst with Cu‐modified polydimethylsiloxane (PDMS) organic skeleton (PDMS@Cu) supported hydroxy‐modified MnOx (MnOx‐OH) is prepared hereon, named PDMS@Cu/MnOx‐OH. Deformation of the elastic carrier causes the contact‐separation friction between Cu and PDMS to generate electrostatically induced nonuniform charges, which provide enriched electrons and transient electric field (EF) to enhance ROS generation and HCHO catalytic oxidation. In HCHO dynamic tests (∼12 ppm at the weight hourly space velocity (WHSV) of 120 000 mL gcat.−1 h), the catalyst PDMS@Cu/MnOx‐OH achieved ∼100% HCHO removal efficiency, with an HCHO‐to‐CO2 conversion efficiency of 82.47%, which is 32.47% higher than that without non‐uniform electrostatic charges, and sustained complete real‐time HCHO degradation within 24 h at room temperature. Coupled with Density Functional Theory (DFT) calculations and COMSOL physics simulations, the potential pathway of nonuniform surface charges and transient EF enhancing HCHO catalytic oxidation is unveiled, offering a theoretical foundation and novel strategy for efficient and long‐term indoor pollutant degradation under the action of sustainably electrostatically induced charges.

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Electrostatically Induced Non‐Uniform Surface Charges Enhancing HCHO Catalytic Oxidation Based on Elastic Sponge Catalyst

Zheng,

Liu,

Han

et al. 2024

Adv Funct Materials

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show abstract

Active lattice oxygen trigger for propane total oxidation: [MnO6] tunnel-restrained Cu2+ chain in α-MnO2

Yang,

Zhao,

Wang

et al. 2025

Applied Catalysis B: Environment and Energy

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Tight coupling of oxygen vacancies and acidity on α-MnO2 through cerium doping engineering for efficient removal of multi-component VOCs

Gao,

Song,

Mao

et al. 2025

Applied Catalysis B: Environment and Energy

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Modulation mechanism of Mn-O strength in α-MnO2 catalyst for high-efficiency catalytic combustion of propane

Cited by 7 publications

References 46 publications

Electrostatically Induced Non‐Uniform Surface Charges Enhancing HCHO Catalytic Oxidation Based on Elastic Sponge Catalyst

Electrostatically Induced Non‐Uniform Surface Charges Enhancing HCHO Catalytic Oxidation Based on Elastic Sponge Catalyst

Active lattice oxygen trigger for propane total oxidation: [MnO6] tunnel-restrained Cu2+ chain in α-MnO2

Tight coupling of oxygen vacancies and acidity on α-MnO2 through cerium doping engineering for efficient removal of multi-component VOCs

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