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High performance electrochemical sensor based on modified screen-printed electrodes with cost-effective dispersion of nanostructured carbon black

2009; Elsevier BV; Volume: 12; Issue: 3 Linguagem: Inglês

10.1016/j.elecom.2009.12.028

1873-1902

Fabiana Arduini, Aziz Amine, Costanza Majorani, Floriana Di Giorgio, Daniele De Felicis, Franco Cataldo, Danila Moscone, Giuseppe Palleschi,

Analytical Chemistry and Sensors

A novel sensor based on a screen-printed electrode (SPE) modified with a stable dispersion of commercially available carbon black (CB) N220 was developed. This probe showed significantly enhanced electrochemical activity relative to a bare SPE when tested with ferricyanide, epinephrine, norepinephrine, benzoquinone and NADH. When challenged in amperometric batch mode with NADH, the response was stable and revealed a linear dependence up to 2·10−4 mol L−1 with a detection limit of 3·10−7 mol L−1. The analytical performance, coupled with the low cost of the CB nanomaterial, suggests that this sensor holds promise for electrochemical applications.