OLIVEIRA, E.C. deBENTO, R.T.CORREA, O.V.PILLIS, M.F.2021-02-222021-02-222020OLIVEIRA, E.C. de; BENTO, R.T.; CORREA, O.V.; PILLIS, M.F. Visible-light photocatalytic activity and recyclability of N-doped TiO2 films grown by MOCVD. <b>Cerâmica</b>, v. 66, n. 380, p. 451-459, 2020. DOI: <a href="https://dx.doi.org/10.1590/0366-69132020663802957">10.1590/0366-69132020663802957</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31786.0366-6913http://repositorio.ipen.br/handle/123456789/31786Nitrogen-doped TiO2 films were grown on borosilicate glass substrates at 400 °C by the metallorganic chemical vapor deposition (MOCVD) for removing dye from water under visible light. The effect of N-doping on the structural, surface, and photocatalytic properties of films was evaluated. X-ray photoelectron spectroscopy (XPS) analyses revealed that 1.56 and 2.44 at% of nitrogen were incorporated into the films by varying the NH3 flux during the growth. Methyl orange dye degradation experiments showed that the N-doped films presented photoactivity under visible light. The film containing 2.44 at% of nitrogen exhibited the best photocatalytic behavior, with 55% of efficiency. Recyclability tests under visible light showed that the film efficiency dropped gradually after each test. N-TiO2 films grown by MOCVD have the potential to be used in environmental applications by removing pollutants using a green method under sunlight or even under internal illumination, although its reuse is limited.451-459openAccessphotocatalysistitanium oxidesthin filmsnanostructureschemical vapor depositionorganometallic compoundsnitrogendoped materialsrecyclingx-ray spectraArtigo de periódico3806610.1590/0366-691320206638029570000-0002-1423-871X0000-0002-1797-9652https://orcid.org/0000-0002-1423-871XSem Percentil28.00