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Elaboration and characterization of nanosized RuO2-TiO2 powder by Sol Gel route

Auteurs : F. Mousli, A. Kadri, N. Benbrahim, A. Chaouchi
Année : 2016
Domaine : Sciences des matériaux
Type : Communication
Conférence: 7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : nanopowders, sol gel, RuO2-TiO2

Résumé :

Mixed metal oxide, RuO2-TiO2 powders were successfully synthesized via a sol gel method and reflux process by using hydrolysis of titanium oxide nanopowders (prepared in the first stage by sol gel route) with its mixture anatase and rutile phases and RuCl3 as rhutenium source in water and alcohol. Nanopowders thus prepared are characterized by X-ray diffraction, UV solid, SEM, ATG and FT-IR techniques. The XRD spectrum confirms the complete conversion of RuCl3 to RuO2 with the presence of TiO2 in its anatase phase only, which is due to the conversion of rutile TiO2 to anatase TiO2. The crystallite size calculated from Debye-Scherrer’s formula is 9 nm. UV solid study show that the characteristic absorption bands of TiO has a low intensity; this is only due to the strong absorption of RuO2 by contribution to titanium oxide. It is reported an increase in absorption intensity with the RuO2 content. This can be attributed to the external effect of resonance related to the excitation of electron collective oscillations in the RuO2 nanoparticles by the electric field of the electromagnetic wave.