A novel 3-D fabrication of platinum nanoparticles decorated micro carbon pillars electrode for high sensitivity detection of hydrogen peroxide

We report a novel fabrication technology for microscale carbon pillars (MCP) decorated with platinum/carbon nanoparticles (Pt/C NPs) for hydrogen peroxide (H2O2) detection. The fabrication process involves three sequential steps: spray-coating of Pt/C nanoparticles, polydimethylsiloxane (PDMS) soft molding, and high temperature carbonization of polyacrylonitrile (PAN), which has great potential for large scale and high throughput manufacturing. The amperometric response of MCP based H2O2 sensor exhibits superior electrochemical activity and charge transfer ability with a sensitivity of 1280–1750 μAmM−1 cm−2 and a linear dynamic range (LDR) to 7000 μM. Most importantly, the developed fabrication method can be used for a wide variety of functional nanomaterials for different applications such as electrochemical analysis, sustainable energy and biosensing.