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1 Physicochemical Problems of Mineral Processing

1 2012

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Adsorption of c.i. basic blue 9 onto TiO2-SiO2 inorganic support

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Przybylska A. , Siwinska-Stefanska K. , Ciesielczyk F. , Jesionowski T.

Physicochemical Problems of Mineral Processing

2012

tom Vol. 48, iss. 1

103-112

Adsorption of C.I. Basic Blue 9 (Methylene Blue Hydrate) on the surface of TiO2-SiO2 oxide composite unmodified or functionalized with N-2-(aminoethyl)-3-amino propyltrimethoxsysilane was investigated. The organic dye was supported on inorganic TiO2-SiO2 oxide composite precipitated in the emulsion system. The process of adsorption was performed for the dye concentrations from 100 to 3000 mg/dm3. Specific surface area of support was determined prior to and after modification with aminosilane. The pigments obtained were subjected to characterization of their physicochemical properties, including particle size distributions and surface morphology as well as colorimetric analysis. Elemental analysis allowed evaluation of the degree of support coverage with the dye. The data obtained permitted assessment of the pigments quality and the effectiveness of support surface modification.