Analysis of optical and structural properties of Ti-doped ZnO nanoparticles synthesized by co-precipitation method

I. Darmadi, A. Taufik, R. Saleh

Research output: Contribution to journalConference article

Abstract

In this study, we used the co-precipitation method to synthesize Ti-doped ZnO nanoparticles having different Ti contents. We then used energy dispersive X-ray spectroscopy to perform an elemental analysis, which revealed that the Ti content varied in its atomic percentages from 5 at.%, 7 at.%, and 12 at.% to 16 at.%. We characterized the structural properties of the prepared samples using X-ray diffraction (XRD) spectroscopy and found Ti-doped ZnO to have an anatase structure in which the lattice parameters a = b and c decrease from 3.251 and 5.213 Å to 3.254 and 5.203 Å, respectively, when the Ti content increased from 5 at.% to 16 at.%. We also found the grain size of Fe-doped TiO2 to decrease from 12 nm to 10 nm with increasing Ti content. We characterized the molecular vibration of the samples using Fourier transform-infrared spectroscopy (FT-IR) and the optical properties using UV-Vis diffuse reflectance spectroscopy. The results show the band-gap energy of Ti-doped ZnO to decrease from 3.20 eV to 3.12 eV. We tested the photocatalytic activity of Ti-doped ZnO in the degradation of methylene blue from the aqueous solution under UV light irradiation and found the photocatalyst Ti-doped ZnO to have good degradation ability, with a degradation percentage of approximately 80 %.

Original languageEnglish
Article number012021
JournalJournal of Physics: Conference Series
Volume1442
Issue number1
DOIs
Publication statusPublished - 29 Jan 2020
EventBasic and Applied Sciences Interdisciplinary Conference 2017, BASIC 2017 - , Indonesia
Duration: 18 Aug 201719 Aug 2017

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