Photoinduced Paramagnetic Centers in Nanocomposites Formed by Titanium Dioxide and Myristic Acid
Rattachement africain : br, cl. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
An electron paramagnetic resonance (EPR) study has been carried out on the hybrid layered nanocomposite formed by TiO 2 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 photoinduced 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 Ti 3+ centers, dimeric units producing S = 1 triplet species, and superoxide radicals, (ROO • ), whose concentrations were monitored as a function of temperature and annealing times during the course of well-defined temperature cycling protocols.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Photoinduced Paramagnetic Centers in Nanocomposites Formed by Titanium Dioxide and Myristic Acid
- Date Crossref
- 23/03/2021
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Les institutions déclarées
Une affiliation ne permet pas de déduire la nationalité d’un auteur.