University of Oulu

Subedi, N., Meščeriakovas, A., Pham, K., Heponiemi, A., Karhunen, T., Saarinen, J. J., Lassi, U., & Lähde, A. (2022). Aerosol processing technique for the synthesis of mixed-phase copper on carbon catalyst: Insights into CO2 adsorption and photocatalytic activity. Nanotechnology, 33(49), 495601.

Aerosol processing technique for the synthesis of mixed-phase copper on carbon catalyst : insights into CO₂ adsorption and photocatalytic activity

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Author: Subedi, Nabin1; Mesceriakovas, Arunas1; Pham, Khai2;
Organizations: 1Fine Particle and Aerosol Technology Laboratory, Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
2Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland
3Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.5 MB)
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Language: English
Published: IOP Publishing, 2022
Publish Date: 2023-08-30


In this study, spray pyrolysis; an aerosol processing technique was utilized to produce a mixed-phase copper on carbon (Cu/CuxO@C) catalyst. The catalyst production was performed via chemical reduction of copper nitrate by a reducing sugar, i.e., glucose, using aqueous solution. The physical and chemical properties of the produced particles was assessed using various characterization techniques. The synthesis temperature had pronounced effect on the final particles. Since CO₂ adsorption onto the catalyst is an important step in catalytic CO₂ reduction processes, it was studied using thermogravimetric and temperature programmed desorption techniques. Additionally, photocatalytic activity of the particles was evaluated by gas-phase oxidation of acetylene gas which revealed excellent activity under both UV and visible light irradiation indicating the possible use of wider range of the solar spectrum.

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Series: Nanotechnology
ISSN: 0957-4484
ISSN-E: 1361-6528
ISSN-L: 0957-4484
Volume: 33
Issue: 49
Article number: 495601
DOI: 10.1088/1361-6528/ac8d9a
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: First author (Subedi N.) acknowledges the doctoral programme in Environmental Physics, Health and Biology (EPHB), University of Eastern Finland for doctoral fellowship. Project funding is provided by Academy of Finland (project number 329563).
Copyright information: © Copyright 2022 IOP Publishing. This is a peer-reviewed, un-copyedited version of an article accepted for publication/published in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1361-6528/ac8d9a.