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Publikace:
Laser-induced crystallization of anodic TiO2 nanotube layers

Článekopen accesspeer-reviewedThis is a postprint of an article published in RSC Advances. The final authenticated version is available online at: https://doi.org/10.1039/D0RA02929G or https://pubs.rsc.org/en/Content/ArticleLanding/2020/RA/D0RA02929G#!divAbstract
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Sopha, Hanna
Mirza, Inam
Turčičova, Hana
Pavliňák, David
Michalicka, Jan
Krbal, Miloš
Rodriguez Pereira, Jhonatan
Hromádko, Luděk
Novák, Ondřej
Mužík, Jiří

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Royal Society of Chemistry

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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.

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