Abstract
The possibility of the synthesis of bimetallic Janus nanoparticles from immiscible metals Ta and Cu by the method of electric explosion of two conductors in an argon atmosphere has been shown. Consolidation of Ta–Cu nanoparticles and spark plasma sintering yielded a composite material with a high microhardness and compressive strength, but a relatively low bending strength. The Ta–Cu composite inhibits the viability of bacteria Escherichia coli and Staphylococcus aureus with an efficiency of 99.99% owing to the slow release of small concentrations of Cu2+ ions. The synthesized composite material with high antibacterial activity for a long time is promising for the technologies of modern regenerative medicine.
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ACKNOWLEDGMENTS
Spark plasma sintering of the powder was carried out at the Nano-Center of the National Research Tomsk Polytechnic University.
Funding
The synthesis of bimetallic Ta–6Cu nanoparticles, the preparation of bulk composites, and the study of the structural and mechanical characteristics of materials were supported by Russian Science Foundation, grant no. 17-19-01319.
Studies of the antimicrobial properties and the isolation of Cu2+ ions from the bulk Ta–6Cu composite were carried out with the financial support of the Program of Basic Scientific Research of the State Academies of Sciences for 2013–2020, direction III.23.
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Translated by A. Bulaev
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Pervikov, A.V., Dvilis, E.S., Khrustalev, A.P. et al. Synthesis of Ta–6Cu Bimetallic Nanoparticles and the Bulk Composite with Antimicrobial Activity. Inorg. Mater. Appl. Res. 12, 755–761 (2021). https://doi.org/10.1134/S207511332103028X
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DOI: https://doi.org/10.1134/S207511332103028X