α‑AgVO3 Decorated by Hydroxyapatite (Ca10(PO4)6(OH)2): Tuning Its Photoluminescence Emissions and Bactericidal Activity
Impacto
Scholar |
Otros documentos de la autoría: da Silva, Jussara Soares; Machado, Thales Rafael; Martins, Tiago A.; Assis, Marcelo de; Foggi, Camila Cristina; Guerra Macedo, Nadia; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
comunitat-uji-handle4:
INVESTIGACIONEste recurso está restringido
https://doi.org/ 10.1021/acs.inorgchem.9b00249 |
Metadatos
Título
α‑AgVO3 Decorated by Hydroxyapatite (Ca10(PO4)6(OH)2): Tuning Its Photoluminescence Emissions and Bactericidal ActivityAutoría
Fecha de publicación
2019-04Editor
American Chemical SocietyCita bibliográfica
DA SILVA SOARES, J., et al. α-AgVO3 Decorated by Hydroxyapatite (Ca10 (PO4) 6 (OH) 2): Tuning Its Photoluminescence Emissions and Bactericidal Activity. Inorganic chemistry, 2019, 58.9: 5900-5913.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/10.1021/acs.inorgchem.9b00249Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Defect-related luminescent materials have attracted interest because of their excellent optical properties and are considered as a less expensive and nontoxic alternative to commonly used lanthanide-based optical ... [+]
Defect-related luminescent materials have attracted interest because of their excellent optical properties and are considered as a less expensive and nontoxic alternative to commonly used lanthanide-based optical systems. These materials are fundamentally and technologically important for the next generation of full-color tunable light-emitting diodes as well as in the biomedical field. In this study, we report the preparation of α-silver vanadate (α-AgVO3, AV) decorated by hydroxyapatite (Ca10(PO4)6(OH)2, HA) with intense photoluminescence (PL) emissions at various HA/AV molar ratios (1:1–1:1/32) by a simple route based on chemical precipitation. The well-defined diffraction peaks observed by X-ray diffraction were all indexed to the monoclinic AV and hexagonal HA phases. Analysis of the results obtained by Fourier transform infrared spectroscopy reveals the presence of short-range structural order as deduced by the characteristic vibrational modes assigned to AV and HA systems. Characterization by scanning and transmission electron microscopies confirms the presence of AV and HA micro- and nanorods, respectively. UV–vis spectroscopy renders band gap energies of 5.80 eV for HA and in the range 2.59–2.65 eV for pure AV and HA/AV samples. The PL data reveal the presence of broad-band emission profiles, typical of defect-related optical centers in materials. Depending on the molar ratio, the emission can be completely tunable from the blue to red spectral regions; in addition, pure white color emission was obtained. On the basis of these results, we propose an order–disorder model induced by structural and interface defects to explain the PL emissions in the HA/AV system. Moreover, our results show that HA/AV composites have superior bactericidal activity against Staphylococcus aureus (methicillin-resistant and methicillin-susceptible) and can be used as a novel multifunctional material. [-]
Proyecto de investigación
CoordenaçãodeAperfeiçoamento de Pessoal de NívelSuperiorBrazil (CAPES), Financial Code 001; the PNPDProgram; FAPESP (Grant 2013/07296-2); and CNPq (Grants141964/2018-9 and 133661/2016-4) ; Universitat Jaume I (Project UJI-B2016-25) ; Generalitat Valenciana (Project Prometeo/2016/079) ; Ministerio de Economia y Competitividad (ProjectCTQ2015-65207-P) ;Derechos de acceso
Copyright © 2019 American Chemical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Aparece en las colecciones
- QFA_Articles [818]