TY - JOUR
T1 - Molecularly imprinted polymers for selective adsorption of quinoline
T2 - theoretical and experimental studies
AU - Martínez Saavedra, L.N.
AU - Penido, R.G.
AU - De Azevedo Santos, L.
AU - Ramalho, T.C.
AU - Lobo Baeta, B.E.
AU - Pereira, M.C.
AU - Candido Da Silva, A.
PY - 2018
Y1 - 2018
N2 - © The Royal Society of Chemistry.The effects of solvent on the synthesis of molecularly imprinted polymers (MIPs) for the selective adsorption of quinoline were evaluated in this work. The MIPs were synthesized by the “bulk” method using the quinoline molecule (IQ) as a template in different solvents, such as toluene (MIPT) and chloroform (MIPC). The adsorbents were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and N2 adsorption/desorption measurements. The influences of time, adsorbate concentration, and temperature on the adsorption of quinoline by MIPT and MIPC were evaluated. Maximum adsorption capacities (qe) of 35.23 and 24.10 mg g-1 were obtained for MIPT and MIPC, respectively. Thermodynamic studies indicate that occur physisorption and a spontaneous process (ΔadsG° < 0) entropically directed. Finally, the highest selectivity and reusability of MIPC for quinoline adsorption was ascribed to the better interaction between the chloroform and monomer, which favors the formation of porous adsorbents with higher numbers of adsorption sites.
AB - © The Royal Society of Chemistry.The effects of solvent on the synthesis of molecularly imprinted polymers (MIPs) for the selective adsorption of quinoline were evaluated in this work. The MIPs were synthesized by the “bulk” method using the quinoline molecule (IQ) as a template in different solvents, such as toluene (MIPT) and chloroform (MIPC). The adsorbents were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and N2 adsorption/desorption measurements. The influences of time, adsorbate concentration, and temperature on the adsorption of quinoline by MIPT and MIPC were evaluated. Maximum adsorption capacities (qe) of 35.23 and 24.10 mg g-1 were obtained for MIPT and MIPC, respectively. Thermodynamic studies indicate that occur physisorption and a spontaneous process (ΔadsG° < 0) entropically directed. Finally, the highest selectivity and reusability of MIPC for quinoline adsorption was ascribed to the better interaction between the chloroform and monomer, which favors the formation of porous adsorbents with higher numbers of adsorption sites.
U2 - 10.1039/c8ra04261f
DO - 10.1039/c8ra04261f
M3 - Article
VL - 8
SP - 28775
EP - 28786
JO - RSC Advances
JF - RSC Advances
SN - 2046-2069
IS - 50
ER -