Dielectric and electrochemical behavior of hydrothermally synthesized Zn-doped titanate nanotubes

Simple item page
dc.contributor.authorMasakul, Pristanuch
dc.contributor.authorKrongkitsiri, Pacharee
dc.contributor.authorThongbai, Prasit
dc.contributor.authorKidkhunthod, Pinit
dc.contributor.authorMaensiri, Santi
dc.contributor.authorSonsupap, Somchai
dc.date.accessioned2026-08-06T10:56:25Z
dc.date.available2026-08-06T10:56:25Z
dc.date.issued2026-11-01
dc.description.abstractA bstract Zn-doped titanate nanotubes (Zn-doped TNTs) with the composition of Zn<inf>x</inf>Ti<inf>3-x</inf>O<inf>7</inf>, (Na<inf>0.96</inf>H<inf>1.04</inf>∙3.42H<inf>2</inf>O) (where x = 0, 0.05, 0.1, and 0.2) were synthesized via a hydrothermal method at 130 °C for 24 h. Structural and morphological characterization using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV-Vis (Ultraviolet-Visible), X-ray Absorption Near Edge Structure (XANES), and Brunauer-Emmett-Teller (BET) techniques confirmed the formation of well-defined nanotubes with controlled dimensions. Transmission electron microscopy (TEM) images of undoped and Zn-doped titanate nanotubes reveal uniform hollow nanotubular structures with diameters of ∼7–15 nm and multilayered walls. The dielectric properties of the Zn-doped TNTs were examined using an LCR meter across a frequency range of 10<sup>2</sup>–10<sup>6</sup> Hz. The results revealed a remarkably high dielectric constant (ε<sup>′</sup>) (∼10<sup>4</sup>-10<sup>5</sup> at 30 °C and 1 kHz), which was attributed to Debye-like relaxation governed by Maxwell-Wagner polarization. The dielectric response exhibited a strong dependence on Zn doping levels, with higher Zn content leading to enhanced permittivity. Electrochemical properties were evaluated through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). The Zn-doped TNTs demonstrated a specific capacitance ( C ) of 23 F g<sup>−1</sup> at a scan rate of 1 mV s<sup>−1</sup>, indicating their potential for energy storage applications. This systematic investigation of Zn incorporation provides critical insights into its impact on the structural, dielectric, and electrochemical properties of titanate nanotubes (TNTs). These findings provide useful insight for further optimization of doped titanate nanostructures toward advanced multifunctional dielectric and electrochemical energy-storage applications.
dc.identifier.citationRadiation Physics and Chemistry, 248, 2026
dc.identifier.doi10.1016/j.radphyschem.2026.114103
dc.identifier.issn0969806X
dc.identifier.other2-s2.0-105040785497
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/18332
dc.sourceRadiation Physics and Chemistry
dc.subjectDielectric properties
dc.subjectElectrochemical properties
dc.subjectNanotubes
dc.subjectZn-doped titanate
dc.titleDielectric and electrochemical behavior of hydrothermally synthesized Zn-doped titanate nanotubes
dc.typeArticle

Files

Collections

Research