کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1182900 1491652 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and Application of Core-Shell Structural Carbon Nanotubes-Molecularly Imprinted Composite Material for Determination of Nafcillin in Egg Samples
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Preparation and Application of Core-Shell Structural Carbon Nanotubes-Molecularly Imprinted Composite Material for Determination of Nafcillin in Egg Samples
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Analytical Chemistry - Volume 41, Issue 2, February 2013, Pages 161–166
نویسندگان
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