Open Access Received:   |   Accepted:   |   Published:

FORMATION OF STABLE SILVER NANOPARTICLES USING GALLIC ACID

Turdikulov I.H.², Atakhanov A.A.¹, Ergashov D.J.¹, Azamkulov Sh.A.¹, Qosimov D.I.³, Ergashev R.B.³

¹Institute of Polymer Chemistry and Physics, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent.
²Yangiyer Branch of the Tashkent Institute of Chemical Technology, Yangiyer City, Syrdarya Region, Uzbekistan.
³Institute of Microbiology, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent.

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Abstract. In this study, silver nanoparticles (AgNPs) were synthesized using gallic acid as both a reducing and stabilizing agent. The synthesis process was carried out under various pH conditions (ranging from 6.0 to 9.0) and at different ratios of gallic acid to silver nitrate (from 1:10 to 1:20). The obtained nanoparticles were analyzed using UV–Visible spectroscopy, Dynamic Light Scattering (DLS), Fourier-Transform Infrared Spectroscopy (FTIR), Atomic Force Microscopy (AFM), and X-ray Diffraction (XRD) techniques. Experimental results indicated that the optimal conditions were achieved at pH 9 with a gallic acid/silver nitrate ratio of 1:15, using 0.01 M AgNO₃ and 1 g/L gallic acid solutions, with a reaction duration of 40 minutes at a temperature of 70 °C. Under these conditions, the synthesized nanoparticles had an average size of 28 nm, showing high monodispersity and stability. Scanning Electron Microscopy (SEM) results confirmed that gallic acid functions effectively not only as a reducing agent but also as a stabilizer for the silver nanoparticles. Microbiological studies demonstrated that the resulting silver nanosuspension possessed strong biocidal properties.

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Key words. Gallic acid, silver nanoparticles, nanosuspension, dynamic light scattering, particle size, nanoparticle morphology, stabilizer, reducing agent.


DOI: http://uzpolymerjournal.com/articles/article.php?id=250107

*Corresponding author: Turdikulov I.H., Yangiyer Branch of the Tashkent Institute of Chemical Technology, Yangiyer City, Syrdarya Region, Uzbekistan.

Citation: Turdikulov I.H., Atakhanov A.A., Ergashov D.J., Azamkulov Sh.A., Qosimov D.I., Ergashev R.B. , FORMATION OF STABLE SILVER NANOPARTICLES USING GALLIC ACID. Uzbekistan Journal of Polymers, Vol. 4(1) 2025: pp.61-71. DOI: http://uzpolymerjournal.com/articles/article.php?id=250107

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