Development of a hydrogen peroxide sensor based on screen-printed electrodes modified with inkjet-printed Prussian
Stefano Cinti1, Fabiana Arduini2, Danila Moscone3
1Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, Rome 00133, Italy. Stefano.Cinti@uniroma2.it.
Abstract:
A sensor for the simple and sensitive measurement of hydrogen peroxide has been developed which is based on screen printed electrodes (SPEs) modified with Prussian blue nanoparticles (PBNPs) deposited using piezoelectric inkjet printing. PBNP-modified SPEs were characterized using physical and electrochemical techniques to optimize the PBNP layer thickness and electroanalytical conditions for optimum measurement of hydrogen peroxide. Sensor optimization resulted in a limit of detection of 2 × 10(-7) M, a linear range from 0 to 4.5 mM and a sensitivity of 762 μA ∙ mM(-1) ∙ cm(-2) which was achieved using 20 layers of printed PBNPs. Sensors also demonstrated excellent reproducibility (<5% rsd).
