A low-cost visible light activeBiFeWO6/TiO2nanocompositewith an efficient photocatalytic and photoelectrochemical performance

Priya, A. Selva; Arunachalam, Prabhakarn; Selvi, A.; Madhavan, Jagannathan; Al‐Mayouf, Abdullah M.; Ghanem, Mohamed A.

doi:10.1016/j.optmat.2018.05.022

Cited by 36 publications

(11 citation statements)

References 36 publications

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“…This corresponds to the energy transition from the valance band consisting of the hybrid Bi 6s O 2p Fe 3d orbitals to the conduction band consisting of the W 5d orbitals. 20) In addition, the optical absorption around 850 nm was attributed to the dd transition of Fe 3+ . 24) The spectral curves of the Bi 1¹x La x FeWO 6 (0 ¯x ¯0.30) samples were located on the shorter wavelength side than that of BiFeWO 6 .…”

Section: Resultsmentioning

confidence: 99%

“…19) The band structure of BiFeWO 6 is configured by a valance band composed of hybrid Bi 6s O 2p Fe 3d orbitals and a conduction band composed of W 5d orbitals. Since the band gap energy of this material is 2.00 eV, 20) it is considered that this compound strongly absorbs visible light below 530 nm. By controlling its bandgap energy, the color is expected to be red or orange.…”

Section: Introductionmentioning

confidence: 99%

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Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Oka

TAKEMURA

Shobu

et al. 2022

J. Ceram. Soc. Japan

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Bi 1¹x La x FeWO 6 (0 ¯x ¯0.30) samples were synthesized by a co-precipitation method. Their crystal structure, optical properties, and color of the pigments were characterized as novel inorganic orange pigments. In the case of the La 3+ -doped samples, the target phase was obtained almost in a single-phase form. Strong optical absorption was observed below 550 nm in all samples. As a result, the Bi 1¹x La x FeWO 6 (0 ¯x ¯0.30) samples exhibited orange colors, and the most vibrant orange hue was obtained at Bi 0.90 La 0.10 FeWO 6 . Although the yellowness value of the Bi 0.90 La 0.10 FeWO 6 (b* = +37.7) pigment was a little smaller than those of the commercially available orange pigments, the redness value of this pigment (a* = +28.5) was larger. Therefore, this pigment exhibited a reddish orange color as compared with the conventional orange ones. In addition, this pigment was chemically stable. Since the Bi 0.90 La 0.10 FeWO 6 pigment is composed of non-toxic elements, it could be a new environmentally friendly inorganic orange pigment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Oka

TAKEMURA

Shobu

et al. 2022

J. Ceram. Soc. Japan

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“…Thus, the composite photocatalysts resulted in 92% and 95% degradation efficiencies toward RhB and MB dye after 90 min. Similarly, Priya et al 12,13 demonstrated an excellent photocatalytic activities of BiFeWO 6 when separately doped with TiO 2 and WO 3 materials. Degradation efficiencies of 100% and 83% were observed toward AO7 and RhB dyes under visible light irradiation.…”

Section: Introductionmentioning

confidence: 92%

Visible Light Driven ZnMoO₄/BiFeWO₆/rGO Z-Scheme Photocatalyst for the Degradation of Anthraquinonic Dye

et al. 2019

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The Z-scheme zinc molybdate/bismuth iron tungstate/reduced graphene oxide (ZnMoO4/BiFeWO6/rGO, ZM/BFW/rGO) ternary composite photocatalyst was prepared with rGO acting as an electron transmission mediator. The physicochemical properties of the materials were characterized by using a range of techniques such as SEM, TEM, EDS, FTIR, Raman, BET, TGA, and UV–vis DRS. The optical properties of the materials showed that ZM/BFW/rGO absorbed more visible light than the pristine ZnMoO4 (ZM) and BiFeWO6 (BFW). Thermal analysis showed enhanced stability of the ternary composite due to incorporation of thermally stable ZM. The composite material was used for photocatalytic degradation of 30 mg L–1 anthraquinonic acid blue 25 (AB 25) as the model pollutant under visible light irradiation. A degradation efficiency of 98% was achieved after 180 min degradation using ZM/BFW/rGO, while ZM and BFW showed only 24% and 36% dye removal efficiencies. About 70% total organic carbo (TOC) was attained with a ternary composite photocatalyst. The enhanced degradation was attributed to the formation of a Z-scheme between the two catalysts, visible light absorption, and the presence of high rGO that aided in electron mediation and shuttling. The photocatalyst also showed high stability with 89% removal efficiency after four cycles of repeated usage. The results of this work provide an alternative method for effective removal of dyes from wastewater and may be explored for large-scale application in the future.

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“…A wide variety of contaminants in water, such as heavy metal ions, pharmaceuticals, and pesticides, have been used as models substances for photocatalytic degradation. Reactive oxygen species (ROSs) such as [117]. A 250 W tungsten halogen lamp was used to carry out the photoexcitation of the catalysts for RhB degradation.…”

Section: Photocatalytic Elimination Of Water Pollutantsmentioning

confidence: 99%

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

Dutta¹,

Chauhan²,

Verma³

et al. 2022

Beilstein J. Nanotechnol.

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One of the most enticing approaches to environmental restoration and energy conversion is photocatalysis powered by solar light. Traditional photocatalysts have limited practical uses due to inadequate light absorption, charge separation, and unknown reaction mechanisms. Discovering new visible-light photocatalysts and investigating their modification is crucial in photocatalysis. Bi-based photocatalytic nanomaterials have gotten much interest as they exhibit distinctive geometric shapes, flexible electronic structures, and good photocatalytic performance under visible light. They can be employed as stand-alone photocatalysts for pollution control and energy production, but they do not have optimum efficacy. As a result, their photocatalytic effectiveness has been significantly improved in the recent decades. Numerous newly created concepts and methodologies have brought significant progress in defining the fundamental features of photocatalysts, upgrading the photocatalytic ability, and understanding essential reactions of the photocatalytic process. This paper provides insights into the characteristics of Bi-based photocatalysts, making them a promising future nanomaterial for environmental remediation. The current review discusses the fabrication techniques and enhancement in Bi-based semiconductor photocatalysts. Various environmental applications, such as H2 generation and elimination of water pollutants, are also discussed in terms of semiconductor photocatalysis. Future developments will be guided by the uses, issues, and possibilities of Bi-based photocatalysts.

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A low-cost visible light activeBiFeWO6/TiO2nanocompositewith an efficient photocatalytic and photoelectrochemical performance

Cited by 36 publications

References 36 publications

Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Visible Light Driven ZnMoO₄/BiFeWO₆/rGO Z-Scheme Photocatalyst for the Degradation of Anthraquinonic Dye

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

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A low-cost visible light activeBiFeWO6/TiO2nanocompositewith an efficient photocatalytic and photoelectrochemical performance

Cited by 36 publications

References 36 publications

Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Novel inorganic orange pigments based on BiFeWO<sub>6</sub>

Visible Light Driven ZnMoO4/BiFeWO6/rGO Z-Scheme Photocatalyst for the Degradation of Anthraquinonic Dye

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

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Product

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Visible Light Driven ZnMoO₄/BiFeWO₆/rGO Z-Scheme Photocatalyst for the Degradation of Anthraquinonic Dye