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Title: Adsorption of styryl pyridinium dyes on CTAB treated silica
Authors: Parida, Sudam K
Mishra, (Ms)P K
Mishra, B K
Issue Date: Jul-1999
Publisher: NISCAIR-CSIR, India
Abstract: Cetyltrimethylammonium bromide (CTAB) adsorbs on silica surface and modifies the surface. The adsorption behaviour of some monochromophoric and bischromophoric styryl pyridinium dyes on CTAB treated silica (CTAB-silica) has been investigated. The adsorption model proposed by Gu and Zhu has been utilized to explain the type of adsorption isotherm. A low coverage of dye on CTAB-silica has been explained through apolar bonding. The rate constants of adsorption have also been determined. The adsorption behaviour of the dyes on CTAB-silica has been compared with that on silica, alkali treated silica and PEG treated silica surfaces.
Page(s): 639-645
Appears in Collections:IJC-A Vol.38A(07) [July 1999]

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