Insoluble methylene-bridged glycoluril dimers as sequestrants for dyes
Suvenika Perera, Peter Y Zavalij, Lyle Isaacs
TL;DR
This paper introduces new insoluble compounds that can remove dyes from water, with one variant showing particularly high efficiency.
Contribution
The study introduces methylene-bridged glycoluril dimers as novel dye sequestrants and compares their performance.
Findings
Catechol-walled H2 outperformed other dimers in dye removal efficiency.
OMe groups in G2W1–G2W4 reduced their sequestration abilities.
H2 achieved 94% removal of methylene blue within 10 minutes.
Abstract
Contamination of water bodies by micropollutants including industrial dyes is a worldwide health and environmental concern. We report the design, synthesis, and characterization of a series of methylene-bridged glycoluril dimers G2W1–G2W4 that are insoluble in water and that differ in the nature of their aromatic sidewalls (G2W4: benzene, G2W3: naphthalene, G2W1 and G2W2: triphenylene). We tested G2W1–G2W4 along with comparator H2 as solid-state sequestrants for a panel of five dyes (methylene blue, methylene violet, acridine orange, rhodamine 6G, and methyl violet 6B). We find that catechol-walled H2 (OH substituents) is a superior sequestrant compared to G2W1–G2W4 (OMe substituents). X-ray crystal structures for G2W1 and G2W3 suggest that the OMe groups fill their own cavity and thereby decrease their abilities as sequestrants. H2 achieved a removal efficiency of 94% for methylene…
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Taxonomy
TopicsAdvanced Photocatalysis Techniques · Covalent Organic Framework Applications · Inorganic Chemistry and Materials