2026-06-27T23:50:10Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/714312024-09-03T18:40:52Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Vázquez López, Antonio
author
Maestre Varea, David
author
Martínez Casado, María Ruth
author
Ramírez Castellanos, Julio
author
Pís, Igor
author
Nappini, Silvia
author
Cremades Rodríguez, Ana Isabel
2023-06-22T10:42:04Z
2023-06-22T10:42:04Z
2022-04
0022-2461
10.1007/s10853-022-07122-x
https://hdl.handle.net/20.500.14352/71431
http://dx.doi.org/10.1007/s10853-022-07122-x
https://link.springer.com/
Anatase TiO_2 nanoparticles doped either with Li or Ni have been synthesized via hydrolysis in variable concentrations. Microstructural analysis confirms the high crystallinity of the doped nanoparticles with sizes around 7 nm, while compositional analysis shows low doping below 2% at. Despite the low concentration of dopants, variations in the Raman and Photoluminescence signals were observed in the doped nanoparticles, mainly due to non-stoichiometry and oxygen deficiency promoted by Li or Ni doping. Doping effects associated with Li and Ni were observed by photoelectron spectroscopy and first principle calculations, which associate the appearance of states in the valence band region to oxygen deficiency and Li or Ni doping and lower n-type character induced by Ni doping. Finally, changes in the thermally induced anatase-to-rutile transition (ART) have been also observed in the doped samples, leading to a dopant-promoted faster ART which occurs at lower temperature boosted due to the dopant effect.
eng
Unravelling the role of lithium and nickel doping on the detect structure and phase transition of anatase TIO2 nanoparticles
journal article
URL
https://docta.ucm.es/bitstreams/c656479c-8511-4bcb-a250-624f6555c873/download
File
MD5
6e166d9a4d6c3a3513007bc133bf67ce
3181537
application/pdf
MaestreD 16+EMB 04-abr-2023.pdf