RuO2/IrO2 nanoparticles on graphene modified screen-printed electrode for enhanced electrochemical detection of ascorbic acid

This study presents the development and characterization of a screen-printed electrode modified with RuO2/IrO2 nanoparticles supported on reduced graphene oxide (rGO) for the electrochemical detection of ascorbic acid (AA). Structural and morphological analyses using electron microscopy and X-ray diffraction confirmed a uniform distribution of nanoparticles across the rGO surface, creating a three-dimensional structure that enhances electron transfer efficiency. The modified electrode exhibited high sensitivity and selectivity for AA detection, with a detection limit of 0.86 mu M. The obtained anti-interference properties and operational stability demonstrate that the RuO2/IrO2@rGO-SPE electrode is an effective solution for accurate AA detection, with potential applications in clinical, pharmaceutical, and environmental fields.