Cationic Dyes

Cationic Dyes

 

organic dyes whose molecules contain the grouping Cationic Dyes R3 (where R is an alkyl or aryl radical) and the CI- or CH3SO4- anion in an aliphatic chain or in a heterocycle.Cationic dyes, usually azo, anthraquinone, or polymethine dyes, are used for dyeing polyacrylonitrile fibers.

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A large percentage of dye removal was due to the large number of negatively charged binding sites on the adsorbent, which provides affinity for cationic dyes [22].
Removal of Cationic Dyes from Aqueous Solution using Magnetic Multi-Wall Carbon Nanotube Nanocomposite as Adsorbent.
They consist of cationic dyes for semi-permanent applications that are in compliance with global regulations, as well as a vast portfolio of intense colors for natural and pastel tones.
Disperse dyes give excellent overall fastness properties with polyester whereas basic dyes are water soluble cationic dyes where the coloured part has a positive charge, interacts with the negative group (either carboxyl or sulfonic acid group) of the fibre molecule (Choi et al., 2000).
Pui, "Studies on adsorption capacity of cationic dyes on several magnetic nanoparticles," Acta Chemica Iasi, vol.
Xie, "Reduced graphene oxide modified luffa sponge as a biocomposite adsorbent for effective removal of cationic dyes from aqueous solution," Desalination and Water Treatment, vol.
A comparative adsorption study with different industrial wastes as adsorbents for the removal of cationic dyes from water.
Jiao, "Starch-derived carbon aerogels with high-performance for sorption of cationic dyes," Polymer, vol.
The surface of the adsorbent gets negatively charged and favors uptake of cationic dyes to increased electrostatic force of attraction.