Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2025 Vol: 17 Issue: 2

Use of Silver Nanoparticles for Adsorption-based Methylene Blue Dye Removal in an Aqueous Medium

Abstract

Methylene blue at low doses is found to be effective in enhancing energy in the cells of human body. Thus, it has found its way as supplement alongside it’s usage in textiles as dye. It is reported to beingtoxic, carcinogenic and non-biodegradable. This work shows the way methylene blue dye was adsorbed from an aqueous solution using silver nanoparticles. The evaluation and estimation of silver nanoparticles under various phases of experimentation was carried out using UV-Visible spectroscopy, Fourier Transform Infra-Red spectroscopy, Zeta Potential and Particle Size Analyzer. The samples contained silver nanoparticles, as indicated by the absorbance peak observed at approximately 420 nm. The size distribution analysis reported that the samples with average particle size of 47 nm is in the nano range. The colloidal properties, dispersion efficacy and stability of the nanoparticles were evaluated using Zeta potential. A strong negative value was indicative of the silver nanoparticles being stable and suitable for use in additional experiments. The presence of active bonds that could be present in the sample that could possibly interact with the methylene blue dye to decolorize it was determined using FTIR. The adsorption was determined to be efficacious post six hours of incubation with adsorption of up to three milligrams per liter of methylene blue dye.

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