Journal of Electroanalytical Chemistry   2016 年 769 卷

2016.05.15

A functional nanocomposite of copper sulfide nanoparticles (CuS) supported on multiwall carbon nanotubes (MWCNTs) was synthesized and used for fabricating a nitrite sensor. X-ray diffraction analysis indicated that the product was CuS-MWCNTs. The morphology of the nanocomposite was studied by transmission electron microscopy. The glass carbon electrode modified with CuS-MWCNTs showed excellent electrocatalytic activities to the oxidation of nitrite in pH 7.0 phosphate buffer. The sensor could detect nitrite in a linear range of 1.0 ??M to 8.1 mM with a correlation coefficient of 0.9989 and sensitivity of 131.2 ??A mM