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Adsorption of Dyes on Nanosize Modified Silica Particles

✍ Scribed by Guangwei Wu; Athanasia Koliadima; Yie-Shein Her; Egon Matijević

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
759 KB
Volume
195
Category
Article
ISSN
0021-9797

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✦ Synopsis

The adsorption of several anionic dyes on nanosize alumina-modified silica particles of different compositions and modal sizes has been studied. These silica cores have the same surface properties as alumina dispersed in aqueous solutions. The negatively charged dyes are electrostatically attracted to positively charged cores and chemisorbed by forming a surface Al lake. The application of so obtained pigments in the preparation of color films and their optical characteristics are described. Copyright 1997 Academic Press. Copyright 1997Academic Press

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