DataVXAdvanced Functional MaterialsPaper
journal article·2023-09

Co Single Atoms and CoOx Nanoclusters Anchored on Ce0.75Zr0.25O2 Synergistically Boosts the NO Reduction by CO

Shaomian Liu, Yongjun Ji, Bing Liu, Wenqing Xu, Wenxing Chen, Jian Yu, Ziyi Zhong, Guangwen Xu, Tingyu Zhu, Fabing Su

Advanced Functional Materials· Volume 33· Issue 36
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Source abstract

Abstract

Abstract Achieving high NO conversion and N2 selectivity in selective catalytic reduction of NO by CO (CO‐SCR) in a wide operating temperature window, particularly in the presence of high O2 concentration, remains a big challenge. Herein, guided by density functional theory (DFT) calculations, a catalyst is rationally developed with dual active centers consisting of both Co single‐atoms (SAs) and CoOx nanoclusters (NCs) co‐anchored on Ce0.75Zr0.25O2 support (CZO), which show above 99.7% NO conversion and 100% N2 selectivity at 250–400 °C under 5 vol% O2. DFT calculation and experimental results confirm a strong interaction among Co SAs, CoOx NCs, and CZO support. Co SAs enhance CO adsorption and accompany the oxygen vacancies (OVs) formation in CZO, while the CoOx NCs promote both NO conversion to nitrate intermediate and the breakage of the NO bond at OVs, thus synergistically boosting the N2 formation.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Catalytic Processes in Materials Science · Ammonia Synthesis and Nitrogen Reduction · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China

School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China

School of Light Industry Beijing Technology and Business University Beijing 100048 P. R. China

Department of Chemical Engineering School of Chemical and Material Engineering Jiangnan University Wuxi 214122 P. R. China

Energy & Catalysis Center School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 P. R. China

Department of Chemical Engineering Guangdong Technion‐Israel Institute of Technology (GTIIT) 241 Daxue Road Shantou 515063 P. R. China

Technion‐Israel Institute of Technology (IIT) Haifa 32000 Israel

Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical Technology Shenyang 110142 P. R. China

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation

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