Application of Taguchi Method for The Synthesis of Nano-sized TiO2 Powders by Acid-Used Sol-Gel Method

Year 2017, Volume: 18 Issue: 3, 705 - 712, 30.09.2017

Gamze Karanfil Celep Kevser Dincer

https://doi.org/10.18038/aubtda.277814

Cited By: 1

Abstract

The acid-used sol-gel synthesis of nano-sized
titania (TiO₂) powders has been studied systematically to optimize
the processing parameters by Taguchi method that control crystallite size. In
addition, crystallite and particle size of TiO₂ powders were
examined by X-ray diffraction (XRD) and transmission electron microscopy (TEM).
For this purpose, the amount of acid, reaction temperature and reaction time
were determined as control parameters. In order to achieve these objectives,
Taguchi’s L₉ orthogonal design (3 parameter, 3 level) was used for
the experiential design. Optimal synthesis conditions were described by use of
the signal-to-noise (S/N) ratio which was calculated from crystallite size of
the nano-sized TiO₂ powders using "the-smaller-the-better"
appoachment. Besides, analysis of variance (ANOVA) was utilised to accomplish
the statistical importance of the synthesis parameters. Experiments were fulfilled
to verify the model at the chosen conditions and the particle size was determined
according to XRD analysis as 46.98 nm. Moreover, the actual size of the synthesised
nano-sized TiO₂ powders with the average size of 51.41 nm. Therefore,
the Taguchi optimization method was an main tool in the optimisation of the
nanosized TiO₂ powders synthesis process with less experiential tests
and slightly cost-efficient approachment.

 

Keywords

TiO2, Nano-sized material, Sol-gel, Taguchi method

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