Pyrene-based sulfonated organic porous materials for rapid adsorption of cationic dyes in water.
Environ Technol
; 44(18): 2795-2806, 2023 Aug.
Article
em En
| MEDLINE
| ID: mdl-35184704
ABSTRACT
Porous organic polymers (POP) have gained attention because of their high specific surface area, porosity and their simplicity in synthesis, but for the most part, they are hydrophobic because of their organic backbone, making it difficult to expand their applications. Here, we have obtained poly(pyrene) porous organic polymers (PyPOP) through the polymerization of pyrene monomers catalysed by aluminium trichloride, which is a simple and inexpensive synthesis method. The sulfonated poly(pyrene) porous organic polymers (PyPOP-SO3H) obtained showed rapid adsorption of cationic dyes, especially malachite green (MG adsorption 1607â
mg/g) and methylene blue (MB adsorption 1220â
mg/g) in pH = 7 aqueous solution, room temperature. The results show that the Freundlich model is more in line with the adsorption process than the Langmuir model, whether for methylene blue or malachite green. In addition, the PSO kinetic model fits better than PFO kinetic model, whether it is for the adsorption of methylene blue or malachite green. The excellent adsorption performance of PyPOP-SO3H for cationic dyes may be due to the introduction of sulfonic acid groups, which not only increases the specific surface area but also allows better dispersion in water, increasing contact points and adsorption efficiency. This research expands the scope of exploration and application of POP.
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01-internacional
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MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Corantes
Idioma:
En
Revista:
Environ Technol
Ano de publicação:
2023
Tipo de documento:
Article