Laser-induced crystallization of anodic TiO2 nanotube layers

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Authors

SOPHA Hanna MIRZA Inam TURČIČOVÁ Hana PAVLIŇÁK David MICHALIČKA Jan KRBAL Miloš RODRIGUEZ-PEREIRA Jhonatan HROMÁDKO Luděk NOVÁK Ondřej MUŽÍK Jiří SMRŽ Martin KOLÍBALOVÁ Eva GOODFRIEND Nathan M. BULGAKOVA Nadezda MOCEK Tomáš M. MACÁK Jan

Year of publication 2020
Type Article in Periodical
Magazine / Source RSC Advances
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1039/D0RA02929G
Doi http://dx.doi.org/10.1039/d0ra02929g
Keywords TiO2 nanotube layers; laser-induced crystalization
Description In this study, crystallization of amorphous TiO(2)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 degrees 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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