Facile synthesis and morphology-induced photoconductivity modulation of Bi2O2S nanostructures

Chitara, Basant; Shringi, Amit Kumar; Roy, Biswadev; Wu, Marcelo; Yan, Fei

doi:10.1016/j.matlet.2023.134545

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…Chitara et al reported the morphological dependence on the use of a reducing agent for the synthesis of Bi 2 O 2 S nanostructures. 53 The use of hydrazine hydrate with thiourea led to the formation of nanosheets, whereas in the absence of hydrazine hydrate, thicker nanoplatelets formed. They also observed a change in photoconductivity with the morphology change.…”

Section: Synthesis Of 2d Boxsmentioning

confidence: 99%

Recent advances in bismuth oxychalcogenide nanosheets for sensing applications

Kumar Shringi,

Kumar,

Yan

2024

Nanoscale

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Section: Synthesis Of 2d Boxsmentioning

confidence: 99%

Recent advances in bismuth oxychalcogenide nanosheets for sensing applications

Kumar Shringi,

Kumar,

Yan

2024

Nanoscale

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Bi2O2S nanosheets for effective visible light photocatalysis of anionic dye degradation

Seling,

Kumar Shringi,

Wang

et al. 2024

Materials Letters

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Electrochemical Detection of H2O2 Using Bi2O3/Bi2O2Se Nanocomposites

Walimbe,

Kumar,

Shringi

et al. 2024

Nanomaterials

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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 electrochemical characteristics 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 contents. The end goal was to obtain phase pure Bi2O2Se. Electrochemical measurements revealed that the Bi2O3/Bi2O2Se composite formed under optimal synthesis conditions displayed high sensitivity (75.7 µA µM−1 cm−2) and excellent selectivity towards H2O2 detection, along with a wide linear detection range (0–15 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.

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Facile synthesis and morphology-induced photoconductivity modulation of Bi2O2S nanostructures

Cited by 3 publications

References 18 publications

Recent advances in bismuth oxychalcogenide nanosheets for sensing applications

Recent advances in bismuth oxychalcogenide nanosheets for sensing applications

Bi2O2S nanosheets for effective visible light photocatalysis of anionic dye degradation

Electrochemical Detection of H2O2 Using Bi2O3/Bi2O2Se Nanocomposites

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