Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites
The development of high-performance hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) sensors is critical for various applications, including environmental monitoring, industrial processes, and biomedical diagnostics. This study explores the development of efficient and selectiv...
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MDPI AG
2024-10-01
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| Series: | Nanomaterials |
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| author | Pooja D. Walimbe Rajeev Kumar Amit Kumar Shringi Obed Keelson Hazel Achieng Ouma Fei Yan |
| author_facet | Pooja D. Walimbe Rajeev Kumar Amit Kumar Shringi Obed Keelson Hazel Achieng Ouma Fei Yan |
| author_sort | Pooja D. Walimbe |
| collection | DOAJ |
| description | The development of high-performance hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) sensors is critical for various applications, including environmental monitoring, industrial processes, and biomedical diagnostics. This study explores the development of efficient and selective H<sub>2</sub>O<sub>2</sub> sensors based on bismuth oxide/bismuth oxyselenide (Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se) nanocomposites. The Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se nanocomposites were synthesized using a simple solution-processing method at room temperature, resulting in a unique heterostructure with remarkable electrochemical characteristics for H<sub>2</sub>O<sub>2</sub> 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 contents. The end goal was to obtain phase pure Bi<sub>2</sub>O<sub>2</sub>Se. Electrochemical measurements revealed that the Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se composite formed under optimal synthesis conditions displayed high sensitivity (75.7 µA µM<sup>−1</sup> cm<sup>−2</sup>) and excellent selectivity towards H<sub>2</sub>O<sub>2</sub> detection, along with a wide linear detection range (0–15 µM). The superior performance is attributed to the synergistic effect between Bi<sub>2</sub>O<sub>3</sub> and Bi<sub>2</sub>O<sub>2</sub>Se, enhancing electron transfer and creating more active sites for H<sub>2</sub>O<sub>2</sub> oxidation. These findings suggest that Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se nanocomposites hold great potential as advanced H<sub>2</sub>O<sub>2</sub> sensors for practical applications. |
| format | Article |
| id | doaj-art-879451da13b943d9a863a7e1ebeea652 |
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| issn | 2079-4991 |
| language | English |
| publishDate | 2024-10-01 |
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| spelling | doaj-art-879451da13b943d9a863a7e1ebeea6522025-08-20T01:47:37ZengMDPI AGNanomaterials2079-49912024-10-011419159210.3390/nano14191592Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se NanocompositesPooja D. Walimbe0Rajeev Kumar1Amit Kumar Shringi2Obed Keelson3Hazel Achieng Ouma4Fei Yan5Department of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USADepartment of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USADepartment of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USADepartment of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USADepartment of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USADepartment of Chemistry and Biochemistry, North Carolina Central University, Durham, NC 27707, USAThe development of high-performance hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) sensors is critical for various applications, including environmental monitoring, industrial processes, and biomedical diagnostics. This study explores the development of efficient and selective H<sub>2</sub>O<sub>2</sub> sensors based on bismuth oxide/bismuth oxyselenide (Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se) nanocomposites. The Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se nanocomposites were synthesized using a simple solution-processing method at room temperature, resulting in a unique heterostructure with remarkable electrochemical characteristics for H<sub>2</sub>O<sub>2</sub> 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 contents. The end goal was to obtain phase pure Bi<sub>2</sub>O<sub>2</sub>Se. Electrochemical measurements revealed that the Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se composite formed under optimal synthesis conditions displayed high sensitivity (75.7 µA µM<sup>−1</sup> cm<sup>−2</sup>) and excellent selectivity towards H<sub>2</sub>O<sub>2</sub> detection, along with a wide linear detection range (0–15 µM). The superior performance is attributed to the synergistic effect between Bi<sub>2</sub>O<sub>3</sub> and Bi<sub>2</sub>O<sub>2</sub>Se, enhancing electron transfer and creating more active sites for H<sub>2</sub>O<sub>2</sub> oxidation. These findings suggest that Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se nanocomposites hold great potential as advanced H<sub>2</sub>O<sub>2</sub> sensors for practical applications.https://www.mdpi.com/2079-4991/14/19/1592electrochemical sensorsnanomaterialshydrogen peroxidebismuth oxyselenide |
| spellingShingle | Pooja D. Walimbe Rajeev Kumar Amit Kumar Shringi Obed Keelson Hazel Achieng Ouma Fei Yan Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites Nanomaterials electrochemical sensors nanomaterials hydrogen peroxide bismuth oxyselenide |
| title | Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites |
| title_full | Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites |
| title_fullStr | Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites |
| title_full_unstemmed | Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites |
| title_short | Electrochemical Detection of H<sub>2</sub>O<sub>2</sub> Using Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>O<sub>2</sub>Se Nanocomposites |
| title_sort | electrochemical detection of h sub 2 sub o sub 2 sub using bi sub 2 sub o sub 3 sub bi sub 2 sub o sub 2 sub se nanocomposites |
| topic | electrochemical sensors nanomaterials hydrogen peroxide bismuth oxyselenide |
| url | https://www.mdpi.com/2079-4991/14/19/1592 |
| work_keys_str_mv | AT poojadwalimbe electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites AT rajeevkumar electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites AT amitkumarshringi electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites AT obedkeelson electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites AT hazelachiengouma electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites AT feiyan electrochemicaldetectionofhsub2subosub2subusingbisub2subosub3subbisub2subosub2subsenanocomposites |