Inhibitory Effect of Increasing Milling Time on Anatase to Rutile phase Transformation of mecanochemically synthesized Titania Nanoparticles
Document Number: 2009-01-0120
Date Published: April 2009
Author(s):
Maryam Salari - Amirkabir University of Technology
Masih Rezaee - Amirkabir University of Technology
Pirooz Marashi - Amirkabir University of Technology
Abstract:
Mechanochemical processing of titanyl sulphate precursor has been used to produce nanocrystalline powders of titania (TiO2). This process involves high energy ball milling of precursor with sodium chloride as inert diluent phase and post heat treatment of as-milled powder. Subsequent washing with distilled water was then used to recover a nanocrystalline titania by removing the sodium chloride salt matrix which effectively seprated the titania powder particles during heat treatment and washing stages. The effect of milling time on TiO2 nanocrystalline size and anatase to rutile transformation (Aï R) was investigated. Characterization of the powder was performed by Thermograviometric Analysis (TGA), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Experimental results show that increasing the milling time can effectively reduce the nanocrystalline size of TiO2 and inhibit Aï R. Also it was found that particles have equiaxed morphology with the crystallite size in rang of 16-28 nm and narrow particle size distribution.
File Size: 1093K
Product Status: In Stock
See other papers presented at SAE World Congress & Exhibition, April 2009, Detroit, MI, USA, Session: Nanotechnology for Automotive Applications: Nano Material for Engery (Part 2 of 3)
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