Application of
silver nanoparticles in the degradation of Methylene Blue dye
Khandelwal Vishnu Kumar
Res. J. Chem. Environ.; Vol. 29(1); 39-45;
doi: https://doi.org/10.25303/291rjce039045; (2025)
Abstract
In this work, the methylene blue dye was degraded from an aqueous solution using
silver nanoparticles. The silver nanoparticles were investigated by Fourier Transform
Infrared Spectroscopy, Zeta Potential, Particle Size Analysis and UV-Visible spectroscopy.
The samples were found to be active and to contain silver nanoparticles as indicated
by the absorbance peak observed at approximately 420 nm. The size distribution analysis
using PSA confirmed that the sample is in the nano range with an average particle
size of 47 nm.
Zeta potential confirms the dispersion, colloidal characteristics and stability
of the nanoparticle. Zeta potential showed a strong negative value, indicating that
the silver nanoparticles are stable and suitable for use in additional experiments.
The FTIR analysis also revealed active peaks, indicating the presence of active
bonds in the sample that can interact with the methylene blue dye to decolorize
it. After six hours of incubation, the nanoparticles successfully adsorbed three
milligrams per liter of methylene blue dye.
