Photoinduced Paramagnetic Centers in Nanocomposites Formed by Titanium Dioxide and Myristic Acid

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dc.contributor.authorMagon, Claudio Jose
dc.contributor.authorZarto, Harold Lozano
dc.contributor.authorDonoso, Jose Pedro
dc.contributor.authorEckert, Hellmut
dc.contributor.authorDevis, Sindy
dc.contributor.authorBenavente, Eglantina
dc.contributor.authorVillarroel, Roberto
dc.contributor.authorGonzalez, Guillermo
dc.date.accessioned2025-01-20T23:51:14Z
dc.date.available2025-01-20T23:51:14Z
dc.date.issued2021
dc.description.abstractAn electron paramagnetic resonance (EPR) study has been carried out on the hybrid layered nanocomposite formed by TiO2 and myristic acid. The samples were characterized by means of X-ray diffraction (XRD), thermogravimetric analysis, solid-state NMR, scanning electron microscopy (SEM), spectral absorbance (UV-vis), and Raman and infrared spectroscopy (FTIR). X-band continuous wave (CW)-EPR was used to investigate the photo-induced paramagnetic species generated in the nanocomposite by UV irradiation at 365 nm in vacuum and in ambient atmosphere and characterized spectroscopically at 90 K. Various paramagnetic species were identified and characterized by their Hamiltonian parameters. They include disordered isolated Ti3+ centers, dimeric units producing S = 1 triplet species, and superoxide radicals, (ROO center dot), whose concentrations were monitored as a function of temperature and annealing times during the course of well-defined temperature cycling protocols.
dc.fuente.origenWOS
dc.identifier.doi10.1021/acs.jpcc.1c00200
dc.identifier.eissn1932-7455
dc.identifier.issn1932-7447
dc.identifier.urihttps://doi.org/10.1021/acs.jpcc.1c00200
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94795
dc.identifier.wosidWOS:000636924700028
dc.issue.numero12
dc.language.isoen
dc.pagina.final6786
dc.pagina.inicio6773
dc.revistaJournal of physical chemistry c
dc.rightsacceso restringido
dc.titlePhotoinduced Paramagnetic Centers in Nanocomposites Formed by Titanium Dioxide and Myristic Acid
dc.typeartículo
dc.volumen125
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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