Abstract
Glucose detection is important in the field of clinical medicine, particularly when it comes to diagnosing and managing diabetes. Recently there has been a surge of interest in developing non-enzymatic glucose sensors. The advancements in non-enzymatic glucose sensors have shown significant progress, making them a focal point of research and development in diagnostics. This study presents the synthesis, characterization and application of polyaniline-stabilized copper iodide nanoparticles for glucose sensing. The copper iodide nanoparticles were synthesized through a modified in-situ polymerization and composite formation route. X-ray diffraction analysis verified the formation of cubic copper iodide (gamma-CuI), while transmission electron microscopy demonstrated that particles were distributed within the polymeric matrix, ranging within the size from 4 to 12 nm. X-ray photoelectron spectroscopy and Raman spectroscopy further validated the formation of copper (I) iodide and polyaniline. The catalyst-modified electrode was evaluated in a three-electrode setup and demonstrated enhanced electrocatalytic activity for glucose oxidation under alkaline media. A microcontroller-based glucose sensor, integrating an Arduino Uno R4 Wi-Fi module, was developed for real-time monitoring, with data transmission to the ThingSpeak cloud platform. The system exhibited a stable and reproducible response, highlighting the potential of synthesized material as a cost-effective and efficient material for non-enzymatic glucose sensing.