Volume 22, Issue 3 2400073
RESEARCH ARTICLE

Dielectric barrier discharge plasma catalysis for diesel particulate matter oxidation: Optimization and synergistic differences in transition metal catalysts

Baoyong Ren

Baoyong Ren

School of Safety Science and Engineering, Changzhou University, Changzhou, People's Republic of China

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Wei Wang

Wei Wang

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

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Zuliang Wu

Zuliang Wu

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou, People's Republic of China

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Jing Li

Jing Li

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou, People's Republic of China

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Erhao Gao

Erhao Gao

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

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Jiali Zhu

Jiali Zhu

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

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Shuiliang Yao

Corresponding Author

Shuiliang Yao

School of Safety Science and Engineering, Changzhou University, Changzhou, People's Republic of China

School of Environmental Science and Engineering, Changzhou University, Changzhou, People's Republic of China

Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, Changzhou, People's Republic of China

Correspondence Shuiliang Yao, School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, People's Republic of China.

Email: [email protected]

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First published: 04 July 2024
Citations: 1

Abstract

Nonthermal plasma (NTP) enhanced catalytic oxidation of diesel particulate matter (DPM) is promising for applications. The synergistic effects of transition metal oxides (MOx, M = Mn, Cu, Ce, Fe, Co, Ti) and dielectric barrier discharge (DBD) plasma on DPM oxidation were investigated, and Fe2O3 showed the best synergistic effect. Cobalt-doped iron oxide (Co–FeOx) displaying a spinel structure showed the best performance among M–FeOx (M = Co, Ce, Cu, Zn, Mn). The main intermediate product generated during the catalytic oxidation of DPM is monodentate carbonate. Under DBD plasma, a strong oxidizing intermediate ferrate (FeO42−) mainly produced at 100–200°C can promote the low-temperature oxidation of DPM.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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