Fabrication and application of Nafion®-modified boron-doped diamond electrode as sensor for detecting caffeine

摘要: Abstract The surface of boron-doped diamond (BDD) electrodes has been modified by Nafion®. polymer film was applied onto the BDD electrode solvent evaporation. Nafion®-BDD used as a sensor for caffeine detection in e.g. cola beverage samples. In cyclic voltammetric measurements, favorable ionic interaction between Nafion® and enhances current response, thus sensitivity, compared to that at bare electrode. exhibits stable sensitive response may represent new analytical tool, offering significant improvement over other electroanalytical methods (e.g.: Nafion®-modified glassy carbon electrode) accepted method analysis (HPLC-MS). residuals from linear regression proved exists 2.0 × 10− 7 1.2 × 10− 5 M, obtaining limit about 1.0 × 10− 7 M. findings presented this study are described discussed light existing literature.