NanoThailand 2016

Titanate nanotubes-AgO nanocomposites: Synthesis, characterization, and dielectric properties

28 Nov 2016, 13:40

15m

Room1 (Greenery)

Oral Nanomaterials & nanostructures Falcon 1

Speaker

Ms Kwunta Siwawongkasem (School of Physics Intistute of Science Sranaree University of Technology, Nakhornratchasima, 30000, Thailand)

Description

The titanate nanotubes (TNTs) were synthesized by hydrothermal method and were composited with silver oxide nanoparticles (AgO) in various 1, 5, 10 wt.%. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray microscopy (EDX), and ultraviolet-visible spectroscopy (UV-vis). The phases of TNTs and TNTs-Ag nanocomposites were confirmed by XRD and EDX results. The dielectric properties of TNTs-AgO were studied at different temperatures (-50 °C to 100 °C) in the wide ranges of frequency (100 Hz to 1 MHz). The TNTs-AgO exhibited dielectric constant in the range of $10-{10}^4$ at frequency 1 kHz and 30 °C. Moreover, the dielectric constants of TNTS significantly decrease with increasing Ag composition due to the increase in the conductivity in the sample causing the reduction of the dielectric properties of TNTs.