کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1182900 | 1491652 | 2013 | 6 صفحه PDF | دانلود رایگان |

A novel composite material based on core-shell molecularly imprinted polymers (MIPs) was prepared by combining surface imprinting technique with a sol-gel process based on carbon nanotubes (CNTs) coated with silica. The morphology and structure of the products (CNTs@Naf-MIPs) were characterized by transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR). The adsorption properties of CNTs@Naf-MIPs were demonstrated by equilibrium rebinding experiments and Langmuir analysis. The maximum adsorption capacity and dissociation constant of CNTs@Naf-MIPs were 9.5 mg g−1 and 56.6 mL mg−1, respectively. The CNTs@Naf-MIPs showed a fast kinetics and reached the equilibrium within only 30 min. The feasibility of determination of nafcillin from real samples was testified in spiked egg samples with concentration of 5 and 10 μg kg−1 by using the imprinted polymer as the adsorption material. The recoveries of nafcillin ranged from 61.3% to 84.3% with good accuracy. The MIPs provided a fast and convenient determination platform for nafcillin in egg samples.
A novel composite material based on core-shell molecularly imprinted polymers for nafcillin (CNTs@Naf-MIPs) was prepared by combining surface imprinting with a sol-gel process based on carbon nanotubes coated with silica. The CNTs@Naf-MIPs provided a fast and convenient determination platform for nafcillin in egg samples.
Journal: Chinese Journal of Analytical Chemistry - Volume 41, Issue 2, February 2013, Pages 161–166