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Sitorus, Ceria
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Education Materials Science & Nanotechnology Physics

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Synthesis of bimetallic Ag-Cu nanoparticles using chemical reduction method as antibacterial agents against Escherichia coli Sitorus, Ceria; Sirait, Makmur; Juliani, Rita; Motlan, Motlan; Ginting, Eva Marlina; Siregar, Nurdin; Sinaga, Rafles
Journal of Physics: Theories and Applications Vol 9, No 2 (2025): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v9i2.104323

Abstract

Bimetallic nanoparticles offer enhanced antibacterial properties due to synergistic effects between different metal ions. In this study, Ag-Cu nanoparticles were synthesized using a chemical reduction method with NaBH₄ as the reducing agent and PVP as a stabilizer. The resulting nanoparticles showed a greenish-black color and an average particle size of 308.8 nm with narrow distribution. Antibacterial activity against Escherichia coli was tested using the disc diffusion method at concentrations of 5%, 10%, and 15%. The results showed a concentration-dependent increase in inhibition zones, with a maximum average of 7.8 mm. Although lower than the positive control, the findings confirm the potential of Ag-Cu nanoparticles as alternative antibacterial agents. Further optimization is recommended for biomedical applications.
Co-Authors Eva Marlina Ginting Makmur Sirait Motlan . Nurdin Siregar Rita Juliani Sinaga, Rafles