Ozcan, FatihBayrakci, MevlutErtul, Seref2020-03-262020-03-2620151060-13251520-5738https://dx.doi.org/10.1080/10601325.2015.1050631https://hdl.handle.net/20.500.12395/32593In this study, four new magnetite nanoparticle containing different chelating groups as ester, amide and azacrown moieties at the lower rim of calix[4]arenes were prepared by the reaction of formylated calix[4]arenes and amino propyl modified magnetite nanoparticles (APTMS-MN). All of the newly synthesized and prepared compounds were characterized by using different analytical techniques such as nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and thermogravimetric analyses (TGA). Furthermore, uranium binding abilities of newly prepared magnetite nanoparticles were evaluated by using solid-liquid phase extraction process and obtained results showed that magnetite nanoparticles containing picolinamide units exhibited superior and more efficient extraction percentage for uranium ions at lower pH values.en10.1080/10601325.2015.1050631info:eu-repo/semantics/closedAccessCalixarenemagnetite nanoparticleuranium ionpicolinamideazacrownArticle528599608Q2WOS:000356791600003Q3