Investigation of effect of template geometry on the crystal structure of Ni nanotubes

• Main Authors: Gulnar Kalkabay, Artem Leonidovich Kozlovskiy, Dmitry Igorevich Shlimas, Milan Abasovna Ibragimova, Maxim Vladimirovich Zdorovets, Daryn Boranbaevich Borgekov, Alexander Vasilyevich Tikhonov
• Format: Article
• Language: English
• Published: al-Farabi Kazakh National University 2016-12-01
• Series: Chemical Bulletin of Kazakh National University
• Subjects: rack membranes; electrochemical deposition; nanotubes; nanowires
• Online Access: https://bulletin.chemistry.kz/index.php/kaznu/article/view/792

Modifications of geometric characteristics and structural properties of Ni nanotubes obtained by template synthesis were considered in this research study. Ion-track polyethylene membranes with pores diameters in the range from 180 to 380 nm were used as templates. Methods of scanning and transmission electron microscopy, energy dispersive and X-ray analysis were used to find influence of the geometrical properties of templates on structure, phase and elemental composition. X-ray analysis showed polycrystalline FCC-structure of nanotubes with crystal lattice parameters different from the standard values, indicating the presence of microstresses in the structure and microdistortions of lattice. We have made a hypothesis of the effect of template parameters on the crystal structure. With the increase of pores diameter, a predominance tendency of traversal of NT axis growth to longitudinal appeared, which could be explained by the increase of the deposited atoms quality. In this case, a tangential crystallites growth dominates over the growth in the normal direction due to layer-by-layer growth process.