PREPARATION OF NANO-SIZED SILVER PARTICLES BY ELECTROLYSIS FROM SILVER-CONTAINING ELECTRICAL SCRAP

Authors

Umar A. YAKHYAEV, Tashkent Institute of Chemical Technology, Tashkent, UzbekistanFollow
Mastura Kh. ARIPOVA, Tashkent Institute of Chemical Technology, Tashkent, UzbekistanFollow
Ripsime V. MKRTCHYAN, Tashkent Institute of Chemical Technology, Tashkent, UzbekistanFollow
Dilrabo A. MUKHTOROVA, Tashkent Institute of Chemical Technology, Tashkent, UzbekistanFollow

Abstract

The aim of the study was preparation of nanosized silver particles by electrolysis from silver-containing scrap from electrical engineering production. For this purpose, at the first stage, silver particles with a size of 0.2–2 microns were obtained by the cementation method, confirmed by the results of scanning electron microscopy. A silver anode for the electrolysis unit was created from the obtained silver particles by the melting method. At the second stage, electrolysis was carried out on a unit with rotating electrodes, in which the cathode was made of platinum. Optimum conditions for the electrolysis process, carried out at a voltage of 0.8 V, were determined. The optimum speed of electrode rotation (900 rpm) was established. Polyvinyl alcohol was used to prevent aggregation of silver particles in the suspension. Its optimum amount, as well as the duration (20–25 min) and the optimum process temperature (35 °C) necessary for obtaining silver particles in the range of 5–20 nm were determined. . The presence of particles of this size is proven by images obtained with a transmission electron microscope.

Recommended Citation

YAKHYAEV, Umar A.; ARIPOVA, Mastura Kh.; MKRTCHYAN, Ripsime V.; and MUKHTOROVA, Dilrabo A. (2025) "PREPARATION OF NANO-SIZED SILVER PARTICLES BY ELECTROLYSIS FROM SILVER-CONTAINING ELECTRICAL SCRAP," CHEMISTRY AND CHEMICAL ENGINEERING: Vol. 2025: No. 2, Article 2.
DOI: https://doi.org/10.70189/1992-9498.1672
Available at: https://cce.researchcommons.org/journal/vol2025/iss2/2