After tethering refluxed ZnO to carboxylic acid functionalized multiwalled carbon nanotubes (COOH-MWNTs), an electrochemical sensing composite was produced by electrostatically attaching Prussian Blue to ZnO/COOH-MWNTs to enhance sensitivity towards H2O2. This novel composite was developed for rapid assaying of H2O2 generated by oxidatively stressed BT20 and 4T1 cancer cell lines, using chronoamperometry (CA) and cyclic voltammetry (CV) that offer benefits over the standard ELISA assay. Optimization of the sensor was obtained via adjustment of stirring time, pH and deposition loading of the composite onto the glassy carbon electrode (GCE) surface. Good quantitative and selective response in the micromolar H2O2 detection range, utilizing the standard addition method, will be presented.

Prussian blue zinc oxide carbon nanotube composite for rapid hydrogen peroxide assaying

2019 Spring National Meeting

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