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Electrospun black titania nanofibers: influence of hydrogen plasma-induced disorder on the electronic structure and photoelectrochemical performance

Autor
Lepcha, A.; Maccato, C.; Mettenbörger, A.; Andreu, T.; Morante, J.R.; Mayrhofer, L.; Walter, M.; Olthof, S.; Ruoko, T.; Klein, A.
Tipus d'activitat
Article en revista
Revista
The journal of physical chemistry. Part C, nanomaterials and interfaces
Data de publicació
2015-08-20
Volum
119
Número
33
Pàgina inicial
18835
Pàgina final
18842
DOI
https://doi.org/10.1021/acs.jpcc.5b02767 Obrir en finestra nova
URL
http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b02767 Obrir en finestra nova
Resum
his work encompasses a facile method for tailoring surface defects in electrospun TiO2 nanofibers by employing hydrogen plasma treatments. This amiable processing method was proven with SQUID, EPR, and XPS to be highly effective in generating oxygen vacancies, accompanied by the reduction of Ti4+ centers to Ti3+, resulting in the formation of black titania. The treatment temperature was found to affect the Ti3+/Ti4+ ratios and surface valence, while preserving the original 1D morphology of the t...
Paraules clau
Calculations, Electrochemistry, Electronic structure, Nanofibers, Plasma applications, Surface defects, Titanium dioxide

Participants

  • Lepcha, Ashish  (autor)
  • Maccato, C.  (autor)
  • Mettenbörger, A.  (autor)
  • Andreu Arbella, Teresa  (autor)
  • Morante, Joan Ramon  (autor)
  • Mayrhofer, L.  (autor)
  • Walter, M.  (autor)
  • Olthof, S.  (autor)
  • Ruoko, Tero Petri  (autor)
  • Klein, Andi  (autor)