Articles - A systematic investigation of experimental conditions on the particle size and structure of TiO2 nanoparticles synthesized by a sol-gel method
- Roohollah Azizia,c*, Sousan Rasoulib, Naghi Parvini Ahmadic, Amin Jafari jafar kolaeid and Mohammad Azizie
- a Nanometrology Center, Tehran, Iran b Department of Nanomaterials & Nanocoatings, Institute for Color Science and Technology (ICST), Tehran, Iran c Engineering Faculty of Nanomaterials, Sahand University of Technology, Tabriz, Iran d Puladamin Company, Tehran, Iran e Islamic Azad University, Science and Research Branch, Tehran, Iran
Abstract
TiO2 nanoparticles were prepared by a sol-gel method using TiCl4 as a precursor. The effect of the TiCl4/H2O molar ratio and DBS/ethanol (two important parameters in this process) on the particle size and structure of the samples were studied. The structure and morphology of the nanoparticles were investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. A systematic study was made by using the results of Design-Expert software. The optimum ratio of TiCl4/H2O and DBS/ethanol, to achieve the smallest particle size and the highest rutile content, were studied. Results showed that a lower TiCl4/H2O molar ratio led to smaller nano particles and that this goal is achieved for the lowest TiCl4/ H2O molar ratio and intermediate DBS/ethanol values.
Keywords: TiO2 nano pigment, sol-gel method, TiCl4 precursor.
This Article
Copyright 2019 International Orgranization for Ceramic Processing. All rights reserved.Clean-Energy Research Institute(CRI), Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
E-mail: jcpr@hanyang.ac.kr