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

摘要

We report a novel fabrication technology for microscale carbon pillars (MCP) decorated with platinum/carbon nanoparticles (Pt/C NPs) for hydrogen peroxide (H_2O_2) 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 H_2O_2 sensor exhibits superior electrochemical activity and charge transfer ability with a sensitivity of 1280-1750 μAm M~(-1) cm~(-2) and a linear dynamic range (LDR) to 7000μM. 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.