Abstract
One-dimensional PbTiO3 (PTO) nanotubes (NTs) were fabricated via a hydrothermal method based on an anodized TiO2 template. Anatase-structured TiO2 NTs were converted into tetragonal-structured PTO NTs by the entry of Pb2+ ions from high pressure generated during the hydrothermal process. This was confirmed through structural analysis using X-ray diffraction and Raman scattering; increase in the wall thickness of the NTs was observed. However, it was observed that when the conversion process from TiO2 to PTO NTs exceeds the saturation state, the surface morphology of PTO NTs is changed, and PbO particles are formed on the PTO NTs. This constitutes an inhibitory factor in forming PTO NT arrays with clear surface morphology. To prevent this phenomenon, we successfully fabricated PTO NT arrays by controlling the reaction temperature, reaction time, and molar concentration of lead acetate solutions in a hydrothermal process.
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This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2021R1A2C2011350) and by "Research Base Construction Fund Support Program" funded by Jeonbuk National University in 2022.
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Kim, B.H., Cho, S.Y., Kim, EY. et al. Synthesis and structural properties of PbTiO3 nanotube arrays using a TiO2 template-assisted hydrothermal method. J. Korean Phys. Soc. 82, 40–45 (2023). https://doi.org/10.1007/s40042-022-00640-6
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DOI: https://doi.org/10.1007/s40042-022-00640-6