The adsorption of dyes used in the textile industry on mesoporous materials

An adsorbent material made with a silica lamellar mesoporous material treated with chitosan has been proved to be useful to adsorb both anionic and cationic dyes used in the textile industry. The two tested dyes Tectilon Blue (anionic) and Rhodamine B (cationic) have different adsorption kinetics re...

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Bibliographic Details
Published in:Colloid and polymer science 2008-04, Vol.286 (4), p.377-384
Main Authors: Zubieta, Carolina, Sierra, María B., Morini, Marcela A., Schulz, Pablo C., Albertengo, Liliana, Rodríguez, María S.
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Cationic
Cationic dyes
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Dyes
Exact sciences and technology
Food Science
General and physical chemistry
Nanotechnology and Microengineering
Original Contribution
Physical Chemistry
Polymer Sciences
Rhodamine
Soft and Granular Matter
Surface chemistry
Surface physical chemistry
Textile industry
Textiles
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Summary:An adsorbent material made with a silica lamellar mesoporous material treated with chitosan has been proved to be useful to adsorb both anionic and cationic dyes used in the textile industry. The two tested dyes Tectilon Blue (anionic) and Rhodamine B (cationic) have different adsorption kinetics reflecting a complex mechanism of the phenomenon. Furthermore, the adsorption capacity and interaction strength of Tectilon Blue is higher than those of Rhodamine B. Tectilon Blue molecules are situated with the molecular plane perpendicular to the adsorbent surface, whilst that of the Rhodamine B molecule is flat and parallel to the surface. The differences may be attributed to the different regions of the adsorbent surface on which the dyes are adsorbed because of their different electric charge.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-007-1777-7