Facile synthesis of Bi/Bi2WO6 nanocomposite with enhanced photocatalytic activity under visible light

Huang, Yongkui; Kang, Shifei; Yang, Yun; Qin, Hengfei; Ni, Zhijiang; Shui-jin, Yang; Li, Xi

doi:10.1016/j.apcatb.2016.05.022

Cited by 327 publications

(111 citation statements)

References 59 publications

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“…Bismuth complex oxides have recently attracted researchers' attention as promising candidates for visible light photocatalysis due to the fact that they are typically characterized with low band gap values, as the result of the hybridization between the Bi 2p and O 2s states [11]. Bismuth tungstate, Bi 2 WO 6 , is one of the most widely studied and reportedly efficient photocatalytic materials [12][13][14][15][16]. However, there are very few reports to date describing the use of bismuth tungstate for water purification [17,18].…”

Section: Introductionmentioning

confidence: 99%

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

et al. 2017

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Bismuth complex oxides, in particular, bismuth tungstate, have recently attracted attention as promising photocatalytic materials for water treatment processes. In the present work, photocatalytic bismuth tungstate films were prepared by pulsed direct current (DC) reactive magnetron sputtering of Bi and W targets in an Ar/O 2 atmosphere onto spherically-shaped glass beads. The uniform coverage of the substrate was enabled by the use of oscillating bowl placed underneath the magnetrons. The atomic ratio of Bi/W was varied through the variation of the power applied to the magnetrons. The deposited coatings were analyzed by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy and atomic force microscopy. The photocatalytic properties of the films were studied via the methylene blue (MB) degradation process under artificial (fluorescent light) and natural (sunlight) irradiation, and compared to the photocatalytic performance of titanium dioxide coatings deposited onto identical substrates. The results showed that the photocatalytic performance of bismuth tungstate and bismuth oxide-coated beads was superior to that exhibited by TiO 2 -coated beads. Overall, reactive magnetron co-sputtering has been shown to be a promising technique for deposition of narrow band gap bismuth-based semiconducting oxides onto irregularly-shaped substrates for potential use in water treatment applications.

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Section: Introductionmentioning

confidence: 99%

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

et al. 2017

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“…Huang et al 31 also found that under visible light irradiation, Bi 2 WO 6 could exhibit obvious photo-oxidative activity in pollutant degradation. A disadvantage of this nanomaterial is its poor reductive ability, due to the small negative potential of the conduction band.…”

Section: -29mentioning

confidence: 99%

A novel strategy to promote photo-oxidative and reductive abilities via the construction of a bipolar Bi₂WO₆/N-SrTiO₃ material

Xing

Chai

et al. 2017

RSC Adv.

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Focusing on holistically promoting both photo-oxidative and reductive abilities, we constructed a novel Bi 2 WO 6 /N-SrTiO 3 composite, which was expected to have excellent properties for the removal of ions. The matched band structures of Bi 2 WO 6 and N-SrTiO 3 were beneficial for inhibiting the recombination of electron-hole pairs and maintaining the redox capacity through a Z-type n-n heterojunction. Such a bipolar design of photo-oxidative and photo-reductive semiconductor nanomaterials is concluded to be highly effective in remediating complicated toxic residual constituents of both unfixed pharmaceuticals and heavy metals in aquatic environments.

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“…(ii) Bi 2 WO 6 (bismuth tungstate), an Aurivillius oxide that has a layered structure with a perovskite-like slab of WO 6 (Ge and Liu, 2014;Liu, Y. et al, 2015;Huang et al, 2016;Kaur and Kansal, 2016); and (iii) BiVO 4 (bismuth vanadate) in its monoclinic scheelite crystalline form (Dong et al, 2014;Lu et al, 2015;Zhao et al, 2016;Guang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

A Fair Comparison Between Bismuth Catalysts for Application in Photodegradation Under Visible and Solar Light

Ribeiro

Brandestini

Moro

et al. 2019

Braz. J. Chem. Eng.

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Three different bismuth catalysts (Bi 2 WO 6 , BiOI and BiVO 4 ) were synthesized using solvoand hydrothermal methods. Different reaction times, calcination and the addition of poly (vinyl pyrrolidone) during synthesis were tested to investigate the effect of these variables on the catalysts' morphology and photocatalytic activity. The photocatalytic activity was evaluated using the degradation of rhodamine B dye under both visible light and natural solar radiation. The Bi 2 WO 6 samples presented good crystallinity and morphological similarities, despite having undergone different treatments. The BiOI and Bi 2 WO 6 catalysts presented a spherical shape, and no morphological difference was observed as a result of the addition of PVP. The BiVO 4 sample presented a parallelepiped shape. BiOI containing PVP and ethylene glycol was the catalyst that presented the highest activity, while BiVO 4 presented the lowest. In experiments using scavengers, photogenerated holes demonstrated a key role in dye degradation.

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Facile synthesis of Bi/Bi2WO6 nanocomposite with enhanced photocatalytic activity under visible light

Cited by 327 publications

References 59 publications

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

A novel strategy to promote photo-oxidative and reductive abilities via the construction of a bipolar Bi₂WO₆/N-SrTiO₃ material

A Fair Comparison Between Bismuth Catalysts for Application in Photodegradation Under Visible and Solar Light

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Facile synthesis of Bi/Bi2WO6 nanocomposite with enhanced photocatalytic activity under visible light

Cited by 327 publications

References 59 publications

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

A novel strategy to promote photo-oxidative and reductive abilities via the construction of a bipolar Bi2WO6/N-SrTiO3 material

A Fair Comparison Between Bismuth Catalysts for Application in Photodegradation Under Visible and Solar Light

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A novel strategy to promote photo-oxidative and reductive abilities via the construction of a bipolar Bi₂WO₆/N-SrTiO₃ material