Hydrothermally synthesized flower-like vanadium oxide nanostructures for ethanol sensing studies

Shoorangiz, Mehdi; Shariatifard, Leila; Roshan, Hossein; Mirzaei, Ali

doi:10.1016/j.mssp.2021.106241

Cited by 8 publications

(2 citation statements)

References 46 publications

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“…To fabricate a stable, sensitive, cost-effective, and versatile gas sensor for the detection of VOCs, semiconductor metal oxide based materials (SMOs) have been frequently studied for many years [4][5][6][7][8]. As a strong candidate for sensing elements, SMOs directly interact with gas molecules via surface reactions through which their electrical conductivity is modified.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes

Kılıç

Tekin

Alev

et al. 2023

Semicond. Sci. Technol.

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Pristine and chromium (Cr) doped WO3 nanoflakes (NFs) with various concentrations were successfully fabricated by a facile hydrothermal technique on alumina (Al2O3) substrates. The structural, optical, and morphological properties of these NFs were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Visible diffusion reflectance spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS). Gas sensor tests were performed against various volatile organic compounds (VOCs) such as ethanol, xylene, toluene, and isopropanol gases in the temperature range between 50˚C and 250˚C. According to the results of these tests, the isopropanol sensing ability of WO3 NFs is enhanced with Cr-doping due to the increasing active adsorption sites on the surface and improved surface reactions with the decreasing band gap energy. The highest isopropanol sensing response which was calculated to be 77.1 has been obtained by nominally 2% Cr doping at the optimal operating temperature of 150˚C.

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Section: Introductionmentioning

confidence: 99%

Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes

Kılıç

Tekin

Alev

et al. 2023

Semicond. Sci. Technol.

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“…When the material comes into contact with the reducing ethanol molecules, the electrons captured by oxygen are released back into the sensitive material. The carriers of the n-type semiconductor increase, so the resistance becomes larger; the carriers of the p-type semiconductor decrease, so the resistance becomes smaller [30][31][32]. In addition to single metal oxides, bimetallic metal oxides have also been used as gas sensing materials in recent years [33], including NiCo 2 O 4 [34], ZnCo 2 O 4 [35], and LaFeO 3 [36].…”

Section: Introductionmentioning

confidence: 99%

NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Zeng

2022

Journal of Sensors

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In this review, we summarized the state-of-the-art progress on the ethanol performance of NiO by means of morphology, doping, loading noble metal particles, and forming heterojunctions. We first introduced the effect of modulating NiO morphology on ethanol performance that has been reported in recent years. The morphology with large specific surface area and high porosity was considered to be the one that can bring high gas response. Then, we discussed the enhanced effect of the doping of metal cations and noble metal particle loading on the ethanol-sensitive properties of NiO. Doping ions increased the ground-state resistance and increased the oxygen defect concentration of NiO. The effects of noble metal particles on the performance of NiO included chemical sensitization and electronic sensitization. Finally, the related contents of NiO forming complexes with metal oxides and bimetallic oxides were discussed. In this section, the specific improvement mechanism was discussed first, and then, the related work of researchers in recent years was summarized. At the same time, we presented a reasonable outlook for NiO-based ethanol sensors, imagining future directions.

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Ethanol Sensing Performance of Au/TiO2/Ti TFT: Effects of Back Gate Biasing

Singh,

Kumar,

Bhowmik

2024

Springer Proceedings in Materials

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Hydrothermally synthesized flower-like vanadium oxide nanostructures for ethanol sensing studies

Cited by 8 publications

References 46 publications

Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes

Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes

NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Ethanol Sensing Performance of Au/TiO2/Ti TFT: Effects of Back Gate Biasing

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Hydrothermally synthesized flower-like vanadium oxide nanostructures for ethanol sensing studies

Cited by 8 publications

References 46 publications

Fabrication, characterization, and gas sensing performance of chromium doped WO3 nanoflakes

Fabrication, characterization, and gas sensing performance of chromium doped WO3 nanoflakes

NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Ethanol Sensing Performance of Au/TiO2/Ti TFT: Effects of Back Gate Biasing

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Product

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Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes

Fabrication, characterization, and gas sensing performance of chromium doped WO₃ nanoflakes