Improving the sensing performance of SnWO4 nanostructure at room temperature based on CsPbBr3 composite

Ma, Nina; Ma, Shuyi; Fan, Gege; Ni, Ping; Guo, Jiayun; Ma, Wei

doi:10.1016/j.ceramint.2024.06.013

Ceramics International

2024

DOI: 10.1016/j.ceramint.2024.06.013

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Improving the sensing performance of SnWO4 nanostructure at room temperature based on CsPbBr3 composite

Nina Ma,

Shuyi Ma,

Gege Fan

et al.

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CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

Liu,

Song,

Wang

et al. 2024

ACS Sens.

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The design of high-performance and low-power formaldehyde (HCHO) gas sensors is of great interest to researchers for environmental monitoring and human health. Herein, In 2 O 3 /CsPbBr 3 composites were successfully synthesized through an electrospinning and self-assembly approach, and their ultraviolet-activated (UV-activated) HCHO gas-sensing properties were investigated. The measurement data indicated that the In 2 O 3 /CsPbBr 3 sensor possesses an excellent selectivity toward HCHO. The response of the In 2 O 3 /CsPbBr 3 sensor to 2 ppm of HCHO was 31.4, which was almost 11 times larger than that of In 2 O 3 alone. Besides, the In 2 O 3 /CsPbBr 3 sensor also displayed extraordinary linearity (R 2 = 0.9696), stable reversibility, and ideal humidity resistance. Interestingly, the gas-sensing properties of the In 2 O 3 /CsPbBr 3 sensor were further improved (R a /R g = 54.8) under UV light irradiation. Meanwhile, the response/recovery time was shortened to 7/9 s. The improvement of HCHO-sensing properties might be ascribed to the distinctive structure of In 2 O 3 nanofibers, the adsorption capacity of cesium lead bromide quantum dots (CsPbBr 3 QDs) for UV light, and the synergistic effect of heterostructures between the components. Density functional theory (DFT) was implemented to discuss the adsorption ability and electronic characteristics of HCHO at the surface of In 2 O 3 /CsPbBr 3 composites. Especially, this research points out new constructive thoughts for the exploitation of UV light improved gas-sensing materials.

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CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

Liu,

Song,

Wang

et al. 2024

ACS Sens.

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Improving the sensing performance of SnWO4 nanostructure at room temperature based on CsPbBr3 composite

Cited by 1 publication

References 63 publications

CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

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Improving the sensing performance of SnWO4 nanostructure at room temperature based on CsPbBr3 composite

Cited by 1 publication

References 63 publications

CsPbBr3 Quantum Dot Modified In2O3 Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

CsPbBr3 Quantum Dot Modified In2O3 Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

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Product

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CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination

CsPbBr₃ Quantum Dot Modified In₂O₃ Nanofibers for Effective Detection of ppb-Level HCHO at Room Temperature under UV Illumination