Reduced graphene oxide-modified electrodes via fused deposition modeling 3D printing for hydrogen peroxide sensor

Author:

Dou Yan,Dai Rui,Sun Haofan,Bi KunORCID,Zhao Xin,Nian QiongORCID

Abstract

Abstract Fused deposition modeling 3D printing provides a cost-effective and streamlined method for producing electrochemical sensors, overcoming the challenges associated with material selection, complex fabrication processes, and reproducibility issues. This study introduces an innovative approach utilizing a dual-printer setup to simplify the manufacturing of sensor electrodes. A critical enhancement in this process is the surface modification with reduced graphene oxide (rGO), which not only improves the electrochemical characteristics but also induces a wrinkled structure on the 3D printed surface. These wrinkles significantly increase the surface area, directly boosting the electrode’s electrochemical performance. Comprehensive characterization of the electrode surfaces, both before and after rGO modification, demonstrates a substantial increase in sensitivity, with a fortyfold improvement observed in hydrogen peroxide (H2O2) amperometric measurements. This breakthrough paves the way for advanced applications in 3D printed electrochemical sensors.

Funder

NSF

VivaGreen Limited

Eyring Materials Center

Arizona State University

Publisher

IOP Publishing

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