Synthesis and characterization of ZnWO4 ceramic powder

Kumar, G. Bhaskar; Sivaiah, K.; Buddhudu, S.

doi:10.1016/j.ceramint.2009.07.005

Cited by 44 publications

(16 citation statements)

References 19 publications

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“…[1][2][3][4][5][6][7]. Additionally, wolframite-type tungstates are considered to be novel and commercially important materials due to their several encouraging properties, mainly high values of thermal stability, refractive indexes and X-ray absorption coefficients [8,9]. In particular, among wolframite-type tungstates, FeWO 4 and CoWO 4 have been intensively studied.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Rajagopal

Bekenev

Nataraj

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Rajagopal

Bekenev

Nataraj

et al. 2010

Journal of Alloys and Compounds

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“…The bands at 1401 cm −1 , 1468 cm −1 , 1541 cm −1 , 1622 cm −1 , and 3449 cm −1 are assigned to the O–H stretching and the H–O–H bending vibrations [31]. The weak bands at 2850 cm −1 and 2920 cm −1 are ascribed to the C–O vibration of CO 2 in atmosphere [32]. The characteristic bands of the ZnWO 4 indicated that the ZnWO 4 formed.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Photocatalytic Properties of ZnWO₄ Nanocrystals via a Fast Microwave‐Assisted Method

Jing

Shen

et al. 2013

The Scientific World Journal

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High crystallinity of ZnWO4 nanoparticles has been successfully synthesized via a highly effective and environmentally friendly microwave route by controlling the reaction time and temperature. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier infrared spectrum (FT-IR). The crystallinity was enhanced with the increase of the reaction temperature and time. The photocatalytic activities of ZnWO4 nanocrystals were evaluated by testing the photodegradation of rhodamine B (RhB) dye under ultraviolet (UV) light irradiation. The results indicated that as-prepared ZnWO4 was highly effective for the degradation of RhB. The degradation rate of RhB reached 98.01% after 6 h of UV illumination.

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“…8,9 Moreover, to improve the photocatalytic activity of materials, many research groups are focusing on the combination of metal oxides and tungstates to transfer the photoinduced electrons. [15][16][17][18] There are several methods to synthesize metal tungstates such as sol-gel, hydrothermal synthesis, solid state methods, ultrasonic irradiation, microwave irradiation and co-precipitation. Several reports are available in which transition metal oxides and carbon based metal oxide nanocomposites are used as a catalyst material for water puri-cation.…”

Section: Introductionmentioning

confidence: 99%

Novel RGO–ZnWO₄–Fe₃O₄ nanocomposite as high performance visible light photocatalyst

2016

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A novel RGO-ZnWO 4 -Fe 3 O 4 nanocomposite is synthesized by a microwave irradiation method and its catalytic activity for the photo degradation of Methylene Blue (MB) is investigated. The prepared nanocomposites are characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), Raman spectroscopy, photoluminescence spectroscopy (PL) and UV-visible spectroscopy. The visible light photocatalytic activities of the prepared nanocomposites are investigated using a MB dye solution. It is noteworthy that RGO-ZnWO 4 -Fe 3 O 4 nanocomposites exhibited relatively high photocatalytic activity compared to ZnWO 4 -RGO and pure ZnWO 4 on MB in aqueous solution. This enhanced rate is due to the ability of the graphene in the RGO-ZnWO 4 -Fe 3 O 4 composite to support carrier exploitation efficiently by tolerating the photo excited electron-hole pairs and thus encouraging oxidative degradation of the pollutants. This work could be extended to other organic pollutants as well and could provide new insights into ternary nanocomposites as high performance photocatalysts and their application in waste water treatment.

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Synthesis and characterization of ZnWO4 ceramic powder

Cited by 44 publications

References 19 publications

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Synthesis and Photocatalytic Properties of ZnWO₄ Nanocrystals via a Fast Microwave‐Assisted Method

Novel RGO–ZnWO₄–Fe₃O₄ nanocomposite as high performance visible light photocatalyst

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Synthesis and characterization of ZnWO4 ceramic powder

Cited by 44 publications

References 19 publications

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Electronic structure of FeWO4 and CoWO4 tungstates: First-principles FP-LAPW calculations and X-ray spectroscopy studies

Synthesis and Photocatalytic Properties of ZnWO4 Nanocrystals via a Fast Microwave‐Assisted Method

Novel RGO–ZnWO4–Fe3O4 nanocomposite as high performance visible light photocatalyst

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Synthesis and Photocatalytic Properties of ZnWO₄ Nanocrystals via a Fast Microwave‐Assisted Method

Novel RGO–ZnWO₄–Fe₃O₄ nanocomposite as high performance visible light photocatalyst