Abstract
The synthesis of CoNPs cobalt nanoparticles by the method of polyol- process was proposed, which consists in a high-temperature synthesis of polymer-stabilized metal nanoparticles in a matrix of a fourth-generation hyperbranched polyester polyol. Branched polyester polyol acts as both a reducing agent and a stabilizer at the same time. It has been found that the reduction of the precursor CoCl2 with a hyperbranched polyester polyol occurs at 210°C. The introduction of NaOH into the reaction mixture makes it possible to lower the synthesis temperature by 50°C and leads to a change in the mechanism of in situ ripening CoNPs from the digestive mechanism to direct Ostwald ripening.
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The work was carried out at the expense of the Strategic Academic Leadership Program of the Kazan (Volga Region) Federal University (“Priority-2030”).
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Kutyreva, M.P., Burmatova, A.E., Khannanov, А.А. et al. High-Temperature Synthesis of Cobalt Nanoparticles in Hyperbranched Polyester Polyol Medium. Russ J Gen Chem 92, 2838–2844 (2022). https://doi.org/10.1134/S1070363222120350
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DOI: https://doi.org/10.1134/S1070363222120350