Phase Transition of TiO2 Nanotubes: An X-ray Study as a Function of Temperature

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Dipartimento S.B.A.I, Sapienza Università di Roma - Via del Castro Laurenziano, 7 - 00161 Roma, Italy
Dipartimento di Chimica, Sapienza Università di Roma - Piazzale A. Moro, 5 - 00185 Roma, Italy
§ CNIS, Centro di Ricerca per le Nanotecnologie Applicate all’Ingegneria, Sapienza Università di Roma - Piazzale A. Moro, 5 - 00185 Roma, Italy
Dipartimento di Scienze della Terra, Sapienza Università di Roma - Piazzale A. Moro, 5 - 00185 Roma, Italy
*E-mail: [email protected] (F.A.S.).
*E-mail: [email protected] (P.B.).
*E-mail: [email protected] (M.P.).
Cite this: J. Phys. Chem. C 2017, 121, 44, 24871–24876
Publication Date (Web):October 10, 2017
https://doi.org/10.1021/acs.jpcc.7b08297
Copyright © 2017 American Chemical Society
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Abstract

Here, a study aimed to determine the phase transition temperature of titanium dioxide nanotubes, both in the presence and in the absence of a Ti layer underneath, is reported. Titania nanotube arrays with different diameters and wall thickness were synthesized via anodic growth at different potential values on a titanium foil. Ex and in situ high-temperature X-ray diffraction measurements were performed, respectively, on the arrays as such and on the powder obtained by detaching the nanotubes from the metallic substrate. Our results demonstrate that the presence of Ti dramatically influences the crystallization process decreasing the temperature formation of rutile, which tends to appear initially at the Ti/TiO2 interface.

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The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jpcc.7b08297.

  • SEM images, ex situ XRPD of TiO2 nanotube arrays on Ti upon heat treatment in air at increasing time and under a N2 atmosphere (PDF)

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Cited By


This article is cited by 4 publications.

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  2. Alessandro Dell’Era, Francesca A. Scaramuzzo, Marco Stoller, Carla Lupi, Marco Rossi, Daniele Passeri, Mauro Pasquali. Spinning Disk Reactor Technique for the Synthesis of Nanometric Sulfur TiO2Core–Shell Powder for Lithium Batteries. Applied Sciences 2019, 9 (9) , 1913. https://doi.org/10.3390/app9091913
  3. Rambabu Yalavarthi, Alberto Naldoni, Štěpán Kment, Luca Mascaretti, Hana Kmentová, Ondřej Tomanec, Patrik Schmuki, Radek Zbořil. Radiative and Non-Radiative Recombination Pathways in Mixed-Phase TiO2 Nanotubes for PEC Water-Splitting. Catalysts 2019, 9 (2) , 204. https://doi.org/10.3390/catal9020204
  4. Michelina Catauro, Elisabetta Tranquillo, Giovanni Dal Poggetto, Mauro Pasquali, Alessandro Dell’Era, Stefano Vecchio Ciprioti. Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO2 Synthesized by the Sol-Gel Method. Materials 2018, 11 (12) , 2364. https://doi.org/10.3390/ma11122364