Straightforward ultrasound-assisted synthesis of bismuth oxide particles with enhanced performance for electrochemical sensors development

• Bi2O3 particles are synthesized by solid-state, wet-chemical and sonochemical routes.
• All particles show the diffraction pattern for the monoclinic α-Bi2O3 phase.
• Bi2O3 particles are used as electrode material of sensor devices.
• Best results are obtained for Bi2O3 particles obtained by sonochemical synthesis.

Solid-state, wet-chemical and sonochemical routes of synthesis were assayed to obtain Bi2O3 particles. X-Ray powder diffraction (XRD), scanning electron microscopy (SEM) and dynamic light scattering (DLS) were applied to characterize the obtained particles. Then, they were evaluated as electrode materials to develop sensor devices. The best electrochemical behavior was obtained for electrodes modified with Bi2O3 particles obtained by sonochemical synthesis route.