Synthesis and evaluation of a molecularly imprinted polymer for selective adsorption and quantification of Acid Green 16 textile dye in water samples

Author(s)

Foguel, Marcos Vinicius ; Bello Pedro, Natacha Thaisa ; Wong, Ademar ; Khan, Sabir ; Boldrin Zanoni, Maria Valnice ; Taboada Sotomayor, Maria del Pilar

• Document type: Journal article
• Source: Talanta; v. 170, p. 244-251, AUG 1 2017.
• Web of Science Citations: 23

Abstract

An alternative for determining environmental pollutants, like textile dyes, is the use of molecularly imprinted polymers (MIPs) as solid phase extraction (SPE) or as sensor recognition systems. MIPs are tailor-made artificial receptor sites in a polymer, which present good affinity and selectivity. This work shows the synthesis of MIPs for the Acid Green 16 (AG16) textile dye and the results of rebinding, selectivity and application of this MIP in water samples. MIP synthesis was performed using AG16 dye (template), 1-vinylimidazole (functional monomer), ethylene-glycol-dimethacrylate (cross-link), 2,2'-azobis(2-methylpropionitrile) (initiator) and methanol (solvent) by bulk synthesis. The imprinted polymer presented excellent rebinding of 83%, an imprinted factor of 6.91 and great selectivity in comparison with other textile dyes. Additionally, the MIP showed high efficiency in the extraction of this dye in water samples, presenting a recovery rate close to 100% and a better performance when compared to commercial SPE cartridges. Due to this excellent performance for AG16, the application of this MIP to determine dyes in different matrices of environmental importance is promising. (AU)

• FAPESP's process: 08/10449-7 - Assessment of occurrence, toxicity/genotoxicity and degradation processes of dyes in effluents and surface water
• Grantee: Maria Valnice Boldrin
• Support type: Research Projects - Thematic Grants
• FAPESP's process: 14/25264-3 - Development and application of new nanoestructurated chemical sensors based on biomimetic polymers
• Grantee: Maria Del Pilar Taboada Sotomayor
• Support type: Regular Research Grants
• FAPESP's process: 14/07009-6 - Development of biomimetic optodes using molecularly imprinted polymers for sensitive and selective measures of environmental importance dyes
• Grantee: Natacha Thaisa Bello Pedro
• Support type: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 11/17552-0 - Detection and quantification of environmental important dyes using biomimetic sensors based on fiber optics and molecularly imprinted polymers
• Grantee: Marcos Vinicius Foguel
• Support type: Scholarships in Brazil - Doctorate