This study aimed to detect trace amounts of lead using Na3BiO4-Bi2O3 mixed oxide nanostructures. Scanning electron microscopy (SEM) showed the presence of nanoplates with an average thickness of 90 nm. X-ray diffraction (XRD indicated the presence of poly-crystalline Na3BiO4 and Bi2O3 in the ratio 1:4. The chemical structure of the prepared samples was also studied through X-ray photoelectron spectroscopy. These nanostructured electrodes are highly sensitive to Pb2+ ions with a limit of detection of 68 ppt (0.32 nM).
Authors: Sandeep Gupta, Monika Tripathi, Shikha Sharma, Manoj Kumar
DOI: https://doi.org/10.3390/engproc2023059108
Publish Year: 2023
