Markov P.Chernev G.Nintianova D.Kazakova N.Karakostov H.2024-12-042024-12-042024-12-042024-12-042024-01-011314-79781314-747110.59957/jctm.v59.i6.2024.20SCOPUS_ID:85209099716https://rlib.uctm.edu/handle/123456789/1573In this study, amorphous nanoparticles were extracted from fly ash using a sol-gel method. The obtained nanoparticles were characterized using XRF spectroscopy, XRD, FT-IR and TEM. The XRD curves show the presence of both crystalline and amorphous phases. FT-IR analysis indicated the presence of silanol and siloxane groups. Upon analysis, the primary nanoparticles were found to exhibit a roughly spherical shape with an average size of approximately 65 nm. The findings of this study demonstrate the feasibility of applying the sol-gel method to synthesize nanoparticles derived from coal fly ash (CFA), thereby avoiding other expensive and energy-intensive methods of nanoparticle synthesis.enArticle