Version 1
: Received: 29 August 2024 / Approved: 30 August 2024 / Online: 30 August 2024 (09:48:08 CEST)
How to cite:
Walimbe, P. D.; Kumar, R.; Shringi, A. K.; Ouma, H. A.; Keelson, O.; Yan, F. Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites. Preprints2024, 2024082222. https://doi.org/10.20944/preprints202408.2222.v1
Walimbe, P. D.; Kumar, R.; Shringi, A. K.; Ouma, H. A.; Keelson, O.; Yan, F. Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites. Preprints 2024, 2024082222. https://doi.org/10.20944/preprints202408.2222.v1
Walimbe, P. D.; Kumar, R.; Shringi, A. K.; Ouma, H. A.; Keelson, O.; Yan, F. Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites. Preprints2024, 2024082222. https://doi.org/10.20944/preprints202408.2222.v1
APA Style
Walimbe, P. D., Kumar, R., Shringi, A. K., Ouma, H. A., Keelson, O., & Yan, F. (2024). Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites. Preprints. https://doi.org/10.20944/preprints202408.2222.v1
Chicago/Turabian Style
Walimbe, P. D., Obed Keelson and Fei Yan. 2024 "Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites" Preprints. https://doi.org/10.20944/preprints202408.2222.v1
Abstract
The development of high-performance hydrogen peroxide (H2O2) sensors is critical for various applications, including environmental monitoring, industrial processes, and biomedical diagnostics. This study explores the development of efficient and selective H2O2 sensors based on bismuth oxide/bismuth oxyselenide (Bi2O3/Bi2O2Se) nanocomposites. The Bi2O3/Bi2O2Se nanocomposites were synthesized using a simple solution-processing method at room temperature, resulting in a unique heterostructure with remarkable electrocatalytic properties for H2O2 detection. Characterization techniques, including powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), confirmed the successful formation of the nanocomposites and their structural integrity. The synthesis time was varied to obtain the composites with different Se content. Electrochemical measurements revealed that the Bi2O3/Bi2O2Se composite formed under optimal synthesis conditions displayed high sensitivity (152.7 µA µM-1 cm-2) and excellent selectivity towards H2O2 detection, along with a wide linear detection range (0.02 - 15 µM) and low detection limit (1.62 µM). The superior performance is attributed to the synergistic effect between Bi2O3 and Bi2O2Se, enhancing electron transfer and creating more active sites for H2O2 oxidation. These findings suggest that Bi2O3/Bi2O2Se nanocomposites hold great potential as advanced H2O2 sensors for practical applications.
Chemistry and Materials Science, Applied Chemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
