Flexible Polyester Screen-printed Electrode Modified with Carbon Nanofibers for the Electrochemical Aptasensing of Cadmium (II)

Fakude Colani T.; Arotiba Omotayo A.; Arduini FabianaMabuba Nonhlangabezo

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Flexible Polyester Screen-printed Electrode Modified with Carbon Nanofibers for the Electrochemical Aptasensing of Cadmium (II)

机译：Flexible Polyester Screen-printed Electrode Modified with Carbon Nanofibers for the Electrochemical Aptasensing of Cadmium (II)

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摘要

An aptasensor was prepared by immobilising a biotinylated aptamer selected for Cd(II) on an activated carbon nanofiber (CNF) and streptavidin modified a screen-printed electrode. The acid activated CNF was characterised by FTIR, CHNS elemental analysis and electron microscopy. Cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy (EIS) were used to characterise each step in the aptasensor preparation electrochemically. A detection limit of 0.11 ppb and a linear range of 2-100 ppb were obtained for Cd(II) with tolerance for other interfering species. The aptasensor was applied in real water samples and validated with ICPOES.

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来源
《Electroanalysis》 |2020年第12期|2650-2658|共9页
作者
Fakude Colani T.; Arotiba Omotayo A.; Arduini FabianaMabuba Nonhlangabezo;
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作者单位

Univ Johannesburg, Dept Chem Sci, ZA-2028 Johannesburg, South Africa;

Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy;

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原文格式 PDF
正文语种英语
中图分类电化学、电解、磁化学;
关键词
cadmium; aptamer; aptasensor; carbon nanofibers; square wave voltammetry;

Flexible Polyester Screen-printed Electrode Modified with Carbon Nanofibers for the Electrochemical Aptasensing of Cadmium (II)

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