Analytical Sciences

Inkjet Printed Prussian Blue Films for Hydrogen Peroxide Detection

Jun-Yu HU, Yu-Ping LIN, and Ying-Chih LIAO

Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Da’an Dist., Taipei 10617, Taiwan

An inkjet printing method is described to fabricate hydrogen peroxide (H₂O₂) sensors. Insoluble Prussian blue (PB) nanoparticles were dispersed in aqueous solvent, and were printed on screen printed carbon electrodes with a piezoelectric inkjet printer for H₂O₂ detection. The electrochemical behavior of the printed sensors was studied by using cyclic voltammetry and chronoamperometry. The printed sensors showed great electrocatalytic activity toward H₂O₂ and can be used for amperometric detection of H₂O₂. The calibration curves for H₂O₂ determination showed a linear range from 0.02 to 0.7 mM with a sensitivity of 164.82 μA M⁻¹ cm⁻² for the printed PB film. The results showed the feasibility of applying inkjet printing technology on surface modification; the results also provide an alternative way for manufacturing electrochemical sensors.

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