TY - JOUR
T1 - Assessment of molecularly imprinted polymers (MIPs) in the preconcentration of disperse red 73 dye prior to photoelectrocatalytic treatment
AU - Franco, Jefferson Honorio
AU - Aissa, Alejandra Ben
AU - Bessegato, Guilherme Garcia
AU - Fajardo, Laura Martinez
AU - Zanoni, Maria Valnice Boldrin
AU - Pividori, María Isabel
AU - Del Pilar Taboada Sotomayor, Maria
PY - 2017/2/1
Y1 - 2017/2/1
N2 - © 2016, Springer-Verlag Berlin Heidelberg. Magnetic molecularly imprinted polymers (MMIPs) have become a research hotspot due to their two important characteristics: target recognition and magnetic separation. This paper presents the preparation, characterization, and optimization of an MMIP for the preconcentration of disperse red 73 dye (DR73) and its subsequent efficient degradation by photoelectrocatalytic treatment. The MMIPs were characterized by scanning electron microscopy (SEM), which revealed homogeneous distribution of the particles. Excellent encapsulation of magnetite was confirmed by transmission electron microscopy (TEM). A study of dye binding showed that the dye was retained more selectively in the MIP, compared to the NIP. The release of DR73 from the imprinted polymers into methanol and acetic acid was analyzed by UV-Vis spectrophotometry. The extracts showed higher absorbance values for MMIP, compared to MNIP, confirming greater adsorption of dye in the MMIP material. The extracts were then subjected to photoelectrocatalytic treatment. LC-MS/MS analysis following this treatment showed that the dye was almost completely degraded. Hence, the combination of MMIP extraction and photoelectrocatalysis offers an alternative way of selectively removing an organic contaminant, prior to proceeding with its complete degradation.
AB - © 2016, Springer-Verlag Berlin Heidelberg. Magnetic molecularly imprinted polymers (MMIPs) have become a research hotspot due to their two important characteristics: target recognition and magnetic separation. This paper presents the preparation, characterization, and optimization of an MMIP for the preconcentration of disperse red 73 dye (DR73) and its subsequent efficient degradation by photoelectrocatalytic treatment. The MMIPs were characterized by scanning electron microscopy (SEM), which revealed homogeneous distribution of the particles. Excellent encapsulation of magnetite was confirmed by transmission electron microscopy (TEM). A study of dye binding showed that the dye was retained more selectively in the MIP, compared to the NIP. The release of DR73 from the imprinted polymers into methanol and acetic acid was analyzed by UV-Vis spectrophotometry. The extracts showed higher absorbance values for MMIP, compared to MNIP, confirming greater adsorption of dye in the MMIP material. The extracts were then subjected to photoelectrocatalytic treatment. LC-MS/MS analysis following this treatment showed that the dye was almost completely degraded. Hence, the combination of MMIP extraction and photoelectrocatalysis offers an alternative way of selectively removing an organic contaminant, prior to proceeding with its complete degradation.
KW - Adsorption
KW - Advanced oxidation process
KW - Molecularly imprinted polymers
KW - Photoelectrocatalytic oxidation
KW - Textile dye degradation
KW - Wastewater treatment
U2 - 10.1007/s11356-016-8116-9
DO - 10.1007/s11356-016-8116-9
M3 - Article
SN - 0944-1344
VL - 24
SP - 4134
EP - 4143
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 4
ER -