Desarrollo, Producción e Innovación en la Investigación científica
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Item HaP/SBA-3 Nanostructured Composite to Remove Fluoride Effectively from Contaminated Water.(Univesidsad Tecnológica Nacional, 2021) Cussa, Jorgelina; López , Claudia; Anunziata, Oscar Alfredo; Anunziata, Oscar AlfredoHighly ordered pore mesoporous silica composites, like SBA-3 and hydroxyapatite (HaP) nanocrystals, characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and textural properties, were successfully applied to remove fluoride from contaminated water. The proposed procedure to prepare HaP/SBA-3 wassuccessful, which acts as supports to anchor the HaP crystals, in nanometer-scale (<2nm), with higher fluoride retention from contaminated water. The free OH- groups of HaP nanocrystals, within the host, facilitated the high-performance fluoride trapping. The fluoride retention activity was much higher than that of pure HaP and the composites HaP/SBA-15 and HaP/MCM-41.Item LP-SBA-15-TBA-CP: Tert-Butylamine and Cyclophosphamide detailed study by FTIR and 3D structure.(Univesidsad Tecnológica Nacional, 2023) Anunziata , Oscar Alfredo; Cussa, JorgelinaA careful study of the vibrational spectra of the host (LP-SBA-15), functionalizing agent, tert-Butylamine (TBA), and N, N-bis(2-chloroethyl)tetrahydro-2H-1,3,2- oxazaphosphorin-2-amine 2-oxide, cyclophosphamide (CP) was performed, as there is a diversity of assignments published by different authors [1-5]. Our preliminary OM studies (AM1, PM3, Density Functional Theory, application of the Fukui function), and extensive FTIR studies, we estimated the binding energies, bond lengths and bond angles of CP as well as for TBA-CP, leading us to suggest that CP is embedded in an ellipsoid.