Abstract
In this study, antioxidant copper nanoparticles (CuNPs) were prepared by the modified polyol method using polyvinylpyrrolidone (PVP) and L-ascorbic acid as protective agents. The CuNPs with diameters of 61 ± 12 nm were coated with 8-nm-thick PVP coating and showed excellent resistance to chemical oxidation and coagulation for more than 160 days in ethylene glycol solution. The unique catalytic properties of CuNPs that do not appear in normal CuO or Cu2O nanoparticles are due to the properties of metallic copper elements. The CuNPs exhibited prolonged catalytic activity toward the chemical reduction of 4-nitrophenol as well as the excellent electrocatalytic reduction of nitrite (NO2−), suggesting an efficient electrochemical sensor for nitrite determination.
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Funding
This research was supported by Basic Science Research Program funded by the Ministry of Education (NRF-2017R1D1A1B03028668) and by the Bio & Medical Technology Development Program funded by the Ministry of Science & ICT (NRF-2017M3A9D8029943). We also acknowledge the support of the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2018R1A2B6007742).
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The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript. Young-Jun Lee and Kyungjun Kim contributed equally.
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Lee, YJ., Kim, K., Shin, IS. et al. Antioxidative metallic copper nanoparticles prepared by modified polyol method and their catalytic activities. J Nanopart Res 22, 8 (2020). https://doi.org/10.1007/s11051-019-4727-7
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DOI: https://doi.org/10.1007/s11051-019-4727-7