GRREEN SYNTHESIS OF COBALT NANOPATRICLES BY USING ULTRASOUND WAVES ,WALNUT GREEN SKIN EXTRACT AS REDUCING AGENT AND EVALUATION OF PHOTOCATALYSTY ACTIVETY
DOI:
https://doi.org/10.59957/jctm.v60.i4.2025.9Keywords:
Keywords : cobalt nanoparticles; green synthesis, photocatalytc activity, ulterasound,walnut,Abstract
In this investigation, one-step synthesis of cobalt nanoparticles using aqueous extract of walnut green skin with the help of ultrasound waves and photo-catalytic activity as reducing agents was investigated and researched. After conducting preliminary tests and obtaining nanoparticles, The resulting particles were analysed using a scanning electron microscope (SEM) and the size of the particles was between 22 - 70 nm, then X-ray diffraction (XRD) analysis of the average size Cobalt crystals was shown to be 549 nm by Fourier transform infrared spectroscopy (FT-IR) of the sample was studied and the functional groups, OH, CH, C=C and CO, which indicated cobalt metal, were observed. After that, the photo-catalytic activity of cobalt particles on methylene blue was tested and studied, and the degree of its degradation was checked using ultraviolet-visible spectrometry (UV-Vis). SEM determines the structure of nanoparticles. Also in this study, ultrasound waves were used, and the sound waves hit the molecules of the extract and cause more vibrations. These vibrations cause the intrinsic activities of the molecule, because of which the formation of suitable bonds happens earlier and better.
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