decreasing of the activation energy of tio2 nanoparticles by applying ultrasound waves using the sol-gel method

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ID: 254376
2012
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Abstract
 In this letter, titanium dioxide nanoparticles (TiO2) were synthesized via a sol-gel method and combining titanium tetrachloride (TiCl4) and ethanol. The activation energy was investigated on the phase transformation from anatase to rutile in the presence and absence of ultrasound waves. The anatase nanocrystallites were only crystallized up to the calcination of 500 º C. By increasing the calcination in the region after 500 º C, rutile nanocrystallites grew in samples, and mixed-phase TiO2 nanoparticles were obtained. Our results show that applying ultrasound waves decreases both onset transition temperature and the activation energy of the phase transformation from anatase to rutile. The activation energy showed a considerable reduction at about 18.5 KJ/mol by applying the ultrasound waves.
Reference Key
moghaddam2012iraniandecreasing Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;H Milani Moghaddam;SH Nasirian
Journal inorganica chimica acta
Year 2012
DOI
DOI not found
URL
http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-554&slc_lang=en&sid=1
Keywords
ultrasonic waves titanium dioxide nanoparticles sol-gel method

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