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Oxygen vacancy-rich In2O3-ZrO2 catalysts synthesized via DBD plasma for enhanced CO2-to-CO conversion

Sai Li, Yuhang Wang, Kui Zhang, Haiyan Zhu, Shaobo Jia, Dongyuan Yang, Peng Ren, Zekai Ma, Shuoshuo Wang, Haixia Wu, Yameng Ma, Qi Chen, Jiahao Zhouhuang, Qiuliang Yu, Lihui Zeng, Rui Tan Orcid Logo, Zhiming Feng Orcid Logo, Qing Feng

Journal of Materials Chemistry A, Volume: 14, Issue: 15, Pages: 8976 - 8988

Swansea University Author: Rui Tan Orcid Logo

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DOI (Published version): 10.1039/d5ta08108d

Abstract

The efficient utilization of CO2 as a carbon feedstock is vital for achieving carbon neutrality while enabling sustainable production of C1 chemicals. Plasma-assisted catalytic conversion has emerged as a promising strategy under mild conditions, yet its progress is limited by the lack of highly act...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: Royal Society of Chemistry (RSC) 2026
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa71360
Abstract: The efficient utilization of CO2 as a carbon feedstock is vital for achieving carbon neutrality while enabling sustainable production of C1 chemicals. Plasma-assisted catalytic conversion has emerged as a promising strategy under mild conditions, yet its progress is limited by the lack of highly active and plasma-tolerant catalysts. In this work, an In2O3-ZrO2 composite catalyst with high catalytic activity, excellent thermal stability and long service life was successfully prepared by combining the chemical precipitation method with plasma technology. The In-Zr (1 : 1) catalyst exhibited the best performance, reaching a CO2 conversion of 26.3% and CO selectivity above 90% at an SIE of 104 kJ L−1. Compared with pure In2O3, the composite showed markedly improved thermal stability, sustaining continuous operation for 450 min, three times longer than In2O3. Plasma modification induced a higher concentration of oxygen vacancies (1.69 × 1013 spins per g), increased surface area (56.7 m2 g−1), and a narrowed bandgap (2.49 eV), which synergistically enhanced catalytic activity. Mechanistic studies and DFT calculations further revealed that the strong plasma-catalyst interaction facilitates CO2 activation pathways. This study demonstrates not only the durability of In-Zr composites but also highlights plasma modification as an effective strategy to design next-generation catalysts for plasma-assisted CO2 utilization. Meanwhile, the In-Zr catalyst successfully developed in this study, with its outstanding performance, stability and durability, is a highly promising candidate material for high-temperature industrial catalytic processes.
College: Faculty of Science and Engineering
Funders: This work was financially supported by the Natural Science Foundation of China (NSFC, No. 22109126), Shaanxi Province key research and development plan item (2024CY2-GJHX-72), Yulin City science and technology plan project (2023-CXY-189), Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land Resources (SMDZ-KF2024-3), and Shaanxi Province Key Point Research and Development Project (2022GY-378).
Issue: 15
Start Page: 8976
End Page: 8988

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