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Abstract: Novel molecularly imprinted polymers were prepared successfully by employing multi-walled carbon nanotubes(MWNT) as the supported matrix, grafting of L-phenylalanine on the MWNT surface as the binding site, p-nitrophenol as template, methacrylic acid(MAA) as functional monomer and ethyleneglycol dimethyacrylate(EGDMA) as cross-linker. The molecularly imprinted materials were characterized with infrared spectroscopy(IR) and scanning electron microscopy(SEM). The results show that a stable imprinted layer is grafted on the MWNT surface. The static adsorption experiments were also executed. A large adsorption capacity Q_max of 80.5 μmol/g and an excellent selectivity for the template of 2.5 were obtained. As solid-phase extraction adsorbents, the imprinted material was applied to study the dynamic adsorption of p-nitrophenol from a mixture of p-nitrophenol and other structural analogues. The results show that the imprinted materials can apply to the separation of p-nitrophenol from a mixture solution
Template and target information: p-nitrophenol
Author keywords: adsorption, imprinting, multi-walled carbon nanotube, nitrophenol