作者
Thiago C Canevari, Fernando H Cincotto, Delmarcio Gomes, Richard Landers, Henrique E Toma
发表日期
2017/8
期刊
Electroanalysis
卷号
29
期号
8
页码范围
1968-1975
简介
Hybrid magnetite/carbon quantum dots (MagNP/C‐dots) were prepared and their characterization performed by high resolution transmission electron microscopy (HR‐TEM), X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). Because of their suitable magnetization and electrochemical properties, they were used as versatile electrode modifiers after magnetically confining onto screen printed carbon electrodes (SPE), with the aid of a miniature external magnet. The reported strategy introduces a convenient procedure for assembling modified electrodes, since the nanoparticles can be easily released by removing the magnet. The non‐enzymatic magnetic biosensor showed excellent performance in the determination of NADH at the concentration range 2×10−7 to 5×10−6 mol L−1, exhibiting a sensitivity of 0.15 μmol L−1 and detection limit of 20 nmol L−1. The MagNP/C‐dots/SPE sensor …
学术搜索中的文章
TC Canevari, FH Cincotto, D Gomes, R Landers… - Electroanalysis, 2017