Fabrication of WO3 nanofibers by high voltage electrospinning

Sungpanich, Jarupat; Thongtem, Titipun; Thongtem, Somchai

doi:10.1016/j.matlet.2011.06.004

Cited by 19 publications

(3 citation statements)

References 13 publications

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“…As can be observed from the ATR-FTIR spectrum of WOFs ( Figure 2 a), in the broad area ranging from 480 to 1025 cm −1 , two peaks could be identified. Specifically, the most intense band centered at 668 cm −1 is ascribed to the W-O-W stretching modes, while the less intense one at 802 cm −1 is assigned to the O-W-O stretching modes [ 80 , 81 ]. Both of these peaks are characteristic of WO 3 , and their presence is also stated in other studies, which report the synthesis of WO 3 fibrous materials under similar electrospinning/annealing conditions [ 80 , 81 , 82 , 83 ].…”

Section: Resultsmentioning

confidence: 99%

“…As can be observed from the ATR-FTIR spectrum of WOFs (Figure 2a), in the broad area ranging from 480 to 1025 cm −1 , two peaks could be identified. Specifically, the most intense band centered at 668 cm −1 is ascribed to the W-O-W stretching modes, while the less intense one at 802 cm −1 is assigned to the O-W-O stretching modes [80,81]. Both of these peaks are characteristic of WO3, and their presence is also stated in other studies, which report the synthesis of WO3 fibrous mate- According to the diffraction patterns of CNU and CNTU (Figure 1b), both materials displayed two distinct broad peaks, one of low intensity at 2θ = 13.1 • and one of much higher intensity at 2θ = 27.2 • and 27.1 • .…”

Section: Materials Characterizationmentioning

confidence: 99%

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Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Lykos,

Bairamis,

Efthymiou

et al. 2024

Nanomaterials

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Photocatalysis is a prominent alternative wastewater treatment technique that has the potential to completely degrade pesticides as well as other persistent organic pollutants, leading to detoxification of wastewater and thus paving the way for its efficient reuse. In addition to the more conventional photocatalysts (e.g., TiO2, ZnO, etc.) that utilize only UV light for activation, the interest of the scientific community has recently focused on the development and application of visible light-activated photocatalysts like g-C3N4. However, some disadvantages of g-C3N4, such as the high recombination rate of photogenerated charges, limit its utility. In this light, the present study focuses on the synthesis of WO3 fibers/g-C3N4 Z-scheme heterojunctions to improve the efficiency of g-C3N4 towards the photocatalytic removal of the widely used insecticide clothianidin. The effect of two different g-C3N4 precursors (urea and thiourea) and of WO3 fiber content on the properties of the synthesized composite materials was also investigated. All aforementioned materials were characterized by a number of techniques (XRD, SEM-EDS, ATR-FTIR, Raman spectroscopy, DRS, etc.). According to the results, mixing 6.5% W/W WO3 fibers with either urea or thiourea derived g-C3N4 significantly increased the photocatalytic activity of the resulting composites compared to the precursor materials. In order to further elucidate the effect of the most efficient composite photocatalyst in the degradation of clothianidin, the generated transformation products were tentatively identified through UHPLC tandem high-resolution mass spectroscopy. Finally, the detoxification effect of the most efficient process was also assessed by combining the results of an in-vitro methodology and the predictions of two in-silico tools.

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Section: Resultsmentioning

confidence: 99%

“…As can be observed from the ATR-FTIR spectrum of WOFs (Figure 2a), in the broad area ranging from 480 to 1025 cm −1 , two peaks could be identified. Specifically, the most intense band centered at 668 cm −1 is ascribed to the W-O-W stretching modes, while the less intense one at 802 cm −1 is assigned to the O-W-O stretching modes [80,81]. Both of these peaks are characteristic of WO3, and their presence is also stated in other studies, which report the synthesis of WO3 fibrous mate- According to the diffraction patterns of CNU and CNTU (Figure 1b), both materials displayed two distinct broad peaks, one of low intensity at 2θ = 13.1 • and one of much higher intensity at 2θ = 27.2 • and 27.1 • .…”

Section: Materials Characterizationmentioning

confidence: 99%

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Lykos,

Bairamis,

Efthymiou

et al. 2024

Nanomaterials

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“…The most often methods used for WO 3 synthesis are hydrothermal [3,4,10,11,13,23,[28][29][30][31][32] and solvothermal [19,22,24,25,33] methods, sol-gel technique [27,[34][35][36][37] and spray pyrolysis method [21,38,39]. There are also a few reports concerning WO 3 -based NO 2 sensors prepared by precipitation [12,[40][41][42], gas transport [20], thermal decomposition [18], thermal oxidation [43] or high temperature anodization of metallic tungsten [16], electrospinning [44] and low frequency electrophoretic deposition [45]. Most of these methods are multistage and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Crystalline WO3 nanoparticles for No2 sensing

Matović

Luković

Zagorac

et al. 2020

PAC

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This study shows excellent NO2-sensing properties of tungsten oxide nanoparticles, prepared using a facile procedure which includes dissolution of metallic tungsten in hydrogen peroxide with subsequent low-temperature (400 ?C) heating. We also conducted a thorough literature survey on sensor properties of tungsten oxide prepared by various means and found that the sensor response towards NO2 registered in this work achieved the highest level. The most intriguing feature of the material obtained was a highly reproducible sensor signal at room temperature which was more than 100 times higher than any reported previously for WO3. The probable reason for such high sensor response was the presence of two WO3 polymorphs (-WO3 and h-WO3) in the material synthesized using a peroxide-assisted route. In order to further investigate synthesizedWO3 materials, sophisticated experimental (XRD, SEM, TEM, BET) and theoretical (B3LYP, HSE) methods have been used, as well as resistance and sensor response measurements at various temperatures.

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Structural and Optical Properties of Tungsten Oxide Based Thin Films and Nanofibers

Zayim

Mohseni

2015

Low-Dimensional and Nanostructured Materials and Devices

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Fabrication of WO3 nanofibers by high voltage electrospinning

Cited by 19 publications

References 13 publications

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Crystalline WO3 nanoparticles for No2 sensing

Structural and Optical Properties of Tungsten Oxide Based Thin Films and Nanofibers

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