Inkjet printed Prussian blue films for hydrogen peroxide detection

Area of Science:

• Electrochemistry
• Materials Science
• Nanotechnology

Background:

• Hydrogen peroxide (H2O2) is a crucial molecule in biological and chemical processes.
• Development of efficient and cost-effective H2O2 sensors is essential for various applications.
• Traditional sensor fabrication methods can be complex and expensive.

Purpose of the Study:

• To develop a novel inkjet printing method for fabricating hydrogen peroxide (H2O2) sensors.
• To investigate the electrochemical properties and performance of H2O2 sensors manufactured using inkjet printing.
• To demonstrate the feasibility of inkjet printing for electrochemical sensor manufacturing.

Main Methods:

• Dispersing insoluble Prussian blue (PB) nanoparticles in an aqueous solvent.
• Utilizing a piezoelectric inkjet printer to deposit PB nanoparticles onto screen-printed carbon electrodes.
• Characterizing the electrochemical behavior using cyclic voltammetry and chronoamperometry.

Main Results:

• The inkjet-printed PB sensors exhibited significant electrocatalytic activity towards H2O2.
• Amperometric detection of H2O2 was successfully achieved with the fabricated sensors.
• A linear calibration curve for H2O2 determination was observed in the range of 0.02 to 0.7 mM.
• The sensitivity of the printed PB film was determined to be 164.82 µA M⁻¹ cm⁻².

Conclusions:

• Inkjet printing is a feasible technology for surface modification in sensor fabrication.
• This method provides an alternative and potentially scalable approach for manufacturing electrochemical sensors.
• The developed H2O2 sensors demonstrate promising performance for H2O2 detection.