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Adsorption of several organic dyes was examined on a modified silica surface. For this purpose, EG-Silica was applied, precipitated from sodium metasilicate solution using carbon dioxide in presence of ethylene glycol. In order to promote their interaction with dyes, the silica surface was modified using silane coupling agents with the amino functional group. Technique of conducting the adsorption...
Pigments were obtained by attaching C.I. Direct Red 81 dye to a modified silica surface. Two types of precipitated silicas were applied, namely the commercial Syloid 244 and the precipitated EG-SILICA which was prepared according to a novel procedure. The silica surface was modified with silane coupling agents, such as 3-aminopropyltriethoxysilane and N-2-(aminoethyl)-3-aminopropyltrimethoxysilane...
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