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The study of rutile pigments Ti1−3x Cr x M2x O2

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Central European Journal of Chemistry

Abstract

This study deals with rutile pigments of type Ti1−3x Cr x M2x O2 (where M = Sb, W and x = 0, 0.05, 0.10, 0.20, 0.30, 0.50) prepared by solid state reaction. Chromium is the chromophore (coloring ion); antimony and tungsten are added for achieving electroneutrality. The effect of doping elements (M = Sb, W), calcination temperature (850, 950, 1050, 1150°C) and composition (x = 0, 0.05, 0.10, 0.20, 0.30, 0.50) on color properties, particle size and electrokinetic (zeta) potential was observed. The optimal conditions for synthesis of these rutile pigments are Sb2O3 as raw material, calcination temperature 1050°C and composition x = 0.20 (Ti0.4Cr0.2Sb0.4O2). This orange-green pigment has high stable dispersion (ζ = −43.81 mV) and good color properties (chroma C = 39.50). However, brightly orange pigment Ti0.85Cr0.05W0.10O2 (x = 0.05) synthesized at temperature 1050°C gives “the finest” color with higher chroma (C = 49.48), but less stable dispersion (ζ = −37.32 mV). In light of phase composition, the optimal calcination temperature is 1150°C.

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Authors and Affiliations

  1. Department of Inorganic Technology, Faculty of Chemical Technology, University of Pardubice, 532 10, Pardubice, Czech Republic

    Jan Večeřa, Jan Čech & Petra Šulcová

  2. Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, 532 10, Pardubice, Czech Republic

    Petr Mikulášek

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  1. Jan Večeřa
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  2. Jan Čech
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  3. Petr Mikulášek
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  4. Petra Šulcová
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Correspondence to Jan Večeřa.

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Večeřa, J., Čech, J., Mikulášek, P. et al. The study of rutile pigments Ti1−3x Cr x M2x O2 . cent.eur.j.chem. 11, 1447–1455 (2013). https://doi.org/10.2478/s11532-013-0287-3

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  • DOI: https://doi.org/10.2478/s11532-013-0287-3

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