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- Title
Sulfobetaine Cryogels for Preferential Adsorption of Methyl Orange from Mixed Dye Solutions.
- Authors
Ihlenburg, Ramona B. J.; Lehnen, Anne-Catherine; Koetz, Joachim; Taubert, Andreas
- Abstract
New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N',N'-tetramethyl-N,N'-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.
- Subjects
METHACRYLATES; HAZARDOUS substances; METHYLENE blue; ADSORPTION (Chemistry); AQUEOUS solutions; FREE radicals; BETAINE; ALKALOIDS
- Publication
Polymers (20734360), 2021, Vol 13, Issue 2, p208
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13020208