Laser-induced crystallization of anodic TiO(2) nanotube layers

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 spect...

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Detalles Bibliográficos
Autores principales: Sopha, Hanna, Mirza, Inam, Turčičova, Hana, Pavlinak, David, Michalicka, Jan, Krbal, Milos, Rodriguez-Pereira, Jhonatan, Hromadko, Ludek, Novák, Ondřej, Mužík, Jiří, Smrž, Martin, Kolibalova, Eva, Goodfriend, Nathan, Bulgakova, Nadezhda M., Mocek, Tomáš, Macak, Jan M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054590/
https://www.ncbi.nlm.nih.gov/pubmed/35516600
http://dx.doi.org/10.1039/d0ra02929g
Descripción
Sumario: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 °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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