Laser-induced crystallization of anodic TiO.sub.2./sub. nanotube layers

0533549 - FZÚ 2021 RIV GB eng J - Journal Article
Sopha, H. - Mirza, M. Inam - Turčičová, Hana - Pavliňák, D. - Michalička, J. - Krbal, M. - Rodriguez-Pereira, J. - Hromádko, L. - Novák, Ondřej - Mužík, Jiří - Smrž, Martin - Kolíbalová, E. - Goodfriend, Nathan - Bulgakova, Nadezhda M. - Mocek, Tomáš - Macák, J. M.
Laser-induced crystallization of anodic TiO₂ nanotube layers.
RSC Advances. Roč. 10, č. 37 (2020), s. 22137-22145. E-ISSN 2046-2069
R&D Projects: GA MŠMT EF15_003/0000445; GA MŠMT EF15_006/0000674; GA MŠMT LO1602; GA MŠMT LM2015086
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445; OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : crystallization * TiO₂ * nanotube * TNT * X-ray diffraction * HRTEM
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.361, year: 2020
Method of publishing: Open access

In this study, crystallization of amorphous TiO2 nanotube (TNT) layers upon optimized laser annealing is shown. The resulting anatase TNT layers do not show any signs of deformation or melting. The crystallinity of the laser annealed TNT layers was investigated using X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM). The study of the (photo-) electrochemical properties showed that the laser annealed TNT layers were more defective than conventional TNT layers annealed in a muffle oven at 400 C, resulting in a higher charge recombination rate and lower photocurrent response. However, a lower overpotential for hydrogen evolution reaction was observed for the laser annealed TNT layer compared to the oven annealed TNT layer.
Permanent Link: http://hdl.handle.net/11104/0311915