Adsorption of Anionic Dyes Using a Poly(styrene-block-4-vinylpyridine) Block Copolymer Organogel

Abstract

An organogel was prepared by chemically cross-linking a poly­(styrene-block-4-vinylpyridine) diblock copolymer using dibromododecane in dimethylformamide. Analysis of the prominent structure peak in small-angle X-ray scattering along with the results of light scattering and rheological profile suggests the bridging of the spherical micelles to one another to form an interconnected network after gelation. The use of this organogel as a selective adsorbent for removing anionic dyes from individual aqueous dye solutions and in a mixture of cationic and anionic dye solutions has shown more than 90% removal of the anionic dyes within 2 h. The regeneration and reusability studies showed that even after 20 cycles, the adsorption property of the organogel holds extremely well still beyond 90%. These results are indicative of the potential use of poly­(styrene-block-4-vinylpyridine) organogel for the anionic ions removal in wastewater treatment.

Molecular Design, Supramolecular Assembly, and Excellent Dye Adsorption Capacity of Natural Rigid Dehydroabietic Acid-Tailored Amide Organogelators

“…There are several applications of supramolecular architectures, including adsorbents, , catalysts, and sensors . Supramolecular organic gels can be prepared by self-assembling small organic molecules in organic solvents.…”

Synthesis of Sodium Carboxymethyl Cellulose/Poly(acrylic acid) Microgels via Visible-Light-Triggered Polymerization as a Self-Sedimentary Cationic Basic Dye Adsorbent

“…Studies have shown that dyes are toxic to aquatic organisms and potentially mutagenic and carcinogenic to humans. , Therefore, it is necessary to remove dyes efficiently from wastewater. To date, conventional approaches for treating dye wastewater include catalytic degradation, biodegradation, ionic exchange, membrane separation, flocculation–sedimentation, and adsorption. , Among these, adsorption is a simple, efficient, low-cost, and versatile method. − …”

Adsorption of Acid Orange and Reactive Red by DK110 Loaded Ionic Liquid

“…In order to treat dye wastewater, a variety of methods have been explored [4–13] . Among them, adsorption is considered to be one of the most effective methods because of its cost‐effectiveness, high efficiency and simple operation [14–23] . Conventional adsorbents such as activated alumina, [24] activated carbon, [25] zeolite, [26] natural clay, [27] etc.…”