Sonochemically Recovered Aluminum Oxide Nanoparticles from Domestic Aluminum Wastes as a Highly Stable Electrocatalyst for Proton-Pump Inhibitor (Omeprazole) Detection

In this article, our group has recovered aluminum oxide nanoparticles (Al₂O₃ NPs) from domestic aluminum wastes through a facile sonochemical methodology. The morphological features of Al₂O₃ NPs were explored by FE-SEM, TEM and finally, purity of the as-recovered Al₂O₃ NPs were confirmed by XPS and XRD. The as-recovered Al₂O₃ NPs were utilized for the specific and sensitive detection of omeprazole (OMZ), which comes under the class of proton-pump inhibitor. Under the well-optimized conditions, the calibration curve with good correlation coefficient was attained at Al₂O₃ NPs/GCE towards the detection of OMZ, which portrayed the wider linear range of 0.005-1247 μM, with the lowest detection limit of 0.91 nM. These results suggested that the Al₂O₃ NPs/GCE, exhibited sensitive detection ability towards omeprazole.