Statistically optimized synthesis of cadmium tungstate nanoplates for use as a photocatalyst

Adib, Kourosh; Rezvani, Zolfaghar; Rahimi‐Nasrabadi, Mehdi; Pourmortazavi, Seied Mahdi

doi:10.1007/s10854-018-8617-z

Cited by 6 publications

(6 citation statements)

References 31 publications

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“…Figure 9b presents the proposed graphical mechanism of the photocatalytic reaction in the presence of H 2 O 2 . This mechanism was determined and described in detail in our previous study [65]. The photocatalytic activity of semiconductors is very complicated and can be affected by factors such as the chemical structure, composition, material size, surface area, and a suitable band gap.…”

Section: Photocatalytic Reactions Usingmentioning

confidence: 95%

“…The light absorption properties of materials play a significant role in their photocatalytic activities [63]. The relationship between the energy and absorption edge was calculated using Tauc's Equation [65]:…”

Section: Physico-chemicalmentioning

confidence: 99%

“…Figure 9b presents the proposed graphical mechanism of the photocatalytic reaction in the presence of H2O2. This mechanism was determined and described in detail in our previous study [65]. The principal oxidative species in the photocatalytic process was identified by performing trapping tests of • OH, superoxide radical ( • O 2 − ), and holes using tert-butanol, benzoquinone, and citric acid, respectively [64,71].…”

Section: Photocatalytic Reactions Usingmentioning

confidence: 99%

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Synthesis of Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 Nanoparticles: The Photocatalytic Effects on Organic Pollutants upon Irradiation with UV-Vis Light

et al. 2020

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Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 nanoparticles with different molar ratios of CeVO4 to other inorganic components were synthesized through co-precipitation with a sonochemical-assisted method. X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, vibrating sample magnetometry, and scanning electron microscopy (SEM) methods were used for the physico–chemical characterization of the obtained nanoparticles. As shown in the SEM images, the average sizes of the Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 nanoparticles that formed aggregates were approximately 50–70 nm and 80–100 nm, respectively. The photocatalytic performance of these nanoparticles was examined by measuring methylene blue degradation under visible light (assisted by H2O2). The sample with a mass ratio of 1:2:1 (Fe3O4/ZnWO4/CeVO4, S4) exhibited optimal photocatalytic performance, and thus this sample was subsequently used for the photodegradation of different organic pollutants upon irradiation with ultraviolet (UV) and visible light. Approximately 90% and 70% degradation of methyl violet and methylene blue, respectively, was observed after visible light irradiation. Additionally, the mechanism of the photocatalytic reaction was investigated by measuring ˙OH release under UV light in a system with terephthalic acid and by measuring the release of ˙O2−, ˙OH, and hole scavengers.

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Section: Photocatalytic Reactions Usingmentioning

confidence: 95%

Section: Physico-chemicalmentioning

confidence: 99%

“…Figure 9b presents the proposed graphical mechanism of the photocatalytic reaction in the presence of H2O2. This mechanism was determined and described in detail in our previous study [65]. The principal oxidative species in the photocatalytic process was identified by performing trapping tests of • OH, superoxide radical ( • O 2 − ), and holes using tert-butanol, benzoquinone, and citric acid, respectively [64,71].…”

Section: Photocatalytic Reactions Usingmentioning

confidence: 99%

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Synthesis of Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 Nanoparticles: The Photocatalytic Effects on Organic Pollutants upon Irradiation with UV-Vis Light

et al. 2020

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“…CdWO 4 and some of its composites have shown considerable potential for the photocatalytic degradation of some of the colours under visible and UV irradiation [32,33,34]. CdWO 4 showed its great potential in its physicochemical behavior resulting from the self-trapped excitons [32,35]. CdWO 4 , which crystallizes in a monoclinic wolframite structure, has substantial chemical, optical, and structural properties [32,36].…”

Section: Introductionmentioning

confidence: 99%

“…CdWO 4 showed its great potential in its physicochemical behavior resulting from the self-trapped excitons [32,35]. CdWO 4 , which crystallizes in a monoclinic wolframite structure, has substantial chemical, optical, and structural properties [32,36]. Its energy band gap is bigger than common photocatalysts like TiO 2 , suggesting that it would have a low photo-absorption activity [23,24].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Magnetic Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 Nanoparticles and Investigation of Their Photocatalytic and Anticancer Properties on PANC1 Cells

et al. 2019

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Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 magnetic nanoparticles were prepared at different molar ratios of PrVO4 to previous layers (Fe3O4/CdWO4) via the co-precipitation method assisted by a sonochemical procedure, in order to investigate the photocatalytic performance of these systems and their cytotoxicity properties. The physico-chemical properties of these magnetic nanoparticles were determined via several experimental methods: X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier transformation infrared spectroscopy and ultraviolet-visible diffuse reflection spectroscopy, using a vibrating sample magnetometer and a scanning electron microscope. The average sizes of these nanoparticles were found to be in the range of 60–100 nm. The photocatalytic efficiency of the prepared nanostructures was measured by methylene blue degradation under visible light (assisted by H2O2). The magnetic nanosystem with a 1:2:1 ratio of three oxide components showed the best performance by the degradation of ca. 70% after 120 min of exposure to visible light irradiation. Afterwards, this sample was used for the photodegradation of methyl orange, methyl violet, fenitrothion, and rhodamine-B pollutants. Finally, the mechanism of the photocatalytic reaction was examined by releasing •OH under UV light in a system including terephthalic acid, as well as O2−, OH, and hole scavengers. Additionally, the cytotoxicity of each synthesized sample was assessed using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay against the human cell line PANC1 (cancer), and its IC50 was approximately 125 mg/L.

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Sonochemical synthesis of Ag2WO4/RGO-based nanocomposite as a potential material for supercapacitors electrodes

Adib

Sohouli

Ghalkhani

et al. 2021

Ceramics International

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Statistically optimized synthesis of cadmium tungstate nanoplates for use as a photocatalyst

Cited by 6 publications

References 31 publications

Synthesis of Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 Nanoparticles: The Photocatalytic Effects on Organic Pollutants upon Irradiation with UV-Vis Light

Synthesis of Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 Nanoparticles: The Photocatalytic Effects on Organic Pollutants upon Irradiation with UV-Vis Light

Preparation and Characterization of Magnetic Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 Nanoparticles and Investigation of Their Photocatalytic and Anticancer Properties on PANC1 Cells

Sonochemical synthesis of Ag2WO4/RGO-based nanocomposite as a potential material for supercapacitors electrodes

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