F–Bi<sub>4</sub>TaO<sub>8</sub>Cl flower-like hierarchical structures: controlled preparation, formation mechanism and visible photocatalytic hydrogen production

Nawaz, Muhammad; Mou, Fangzhi; Xu, Leilei; Tu, Hao; Guan, Jianguo

doi:10.1039/c6ra25046g

Cited by 23 publications

(11 citation statements)

References 49 publications

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“…[26] For Ta element, Ta 4f 7/2 is visible at 25.1 and 25.9 eV, and Ta 4f 5/2 is visible at 27.0 and 28.8 eV (Figure S7d). [22] The experimental results of the binding energy change indicate that electrostatic self-assembly could induce a valid interfacial contact between Bi 4 TaO 8 Cl and g-C 3 N 4 , which is also justified by XRD and FTIR results.…”

Section: Structural Characteristicssupporting

confidence: 55%

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Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Liu

Zhang

et al. 2021

ChemPhotoChem

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Finely heterojunction and coupling facets design are essential to enhance photocatalytic activity. Herein, 2D/2D g-C 3 N 4 À Bi 4 TaO 8 Cl catalysts were generated by ball-milling-assisted electrostatic self-assembly strategy. The surface charge of Bi 4 TaO 8 Cl-(001) facet can be fine altered from negative to positive by acidic solution treatment, resulting in that Bi 4 TaO 8 Cl nanoplates are parallelly coupled with g-C 3 N 4 -(002) plane to form top-top coupling facets. The facets coupling optimization, strong interfacial electric field and contact, and rapid charge transfer endow (002)g-C 3 N 4 /(001) Bi 4 TaO 8 Cl catalysts with greatly enhanced photocatalytic activity of CO production and MO degradation relative to individual g-C 3 N 4 , Bi 4 TaO 8 Cl and lateral-top g-C 3 N 4 À Bi 4 TaO 8 Cl catalyst. This present study provides inspiration to further design high-performance heterojunction catalysts by adjusting surface charge with simple method.

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Section: Structural Characteristicssupporting

confidence: 55%

“…The Bi 4 f spectral peak of Bi 4 TaO 8 Cl displays two typical peaks at 158.9 eV (Bi 4f 5/2 ) and 164.1 eV (Bi 4f 7/2 ) (Figure 3d). [22] After combined with g-C 3 N 4 , a small shift can be observed from 158.9 to 159.0 eV and 164.1 to 164.3 eV. The C1s spectral peak of g-C 3 N 4 (Figure 3e) shows three typical peaks at 288.…”

Section: Structural Characteristicsmentioning

confidence: 96%

Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Liu

Zhang

et al. 2021

ChemPhotoChem

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“…Figure presents the XPS spectra of the synthesized photocatalysts. In the XPS spectrum of Bi 4 TaO 8 Cl, peaks of Ta 4f, Cl 2p, Bi 4f and Bi 4d, as well as O 1s are clearly observed . In the XPS spectrum of Bi 4 TaO 8 Cl:Gd 3+ , peak of Gd 4d also can be seen except of peaks in the XPS spectrum of Bi 4 TaO 8 Cl .…”

Section: Resultsmentioning

confidence: 80%

Improved photocatalytic activity of Bi₄TaO₈Cl by Gd³⁺ doping

Feng

Yuan

et al. 2018

J Am Ceram Soc

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Bi 4 TaO 8 Cl and Bi 4 TaO 8 Cl:Gd 3+ photocatalysts were synthesized by the solvothermal technique. The phase, microstructure, optical properties, and photocatalytic activities were investigated. Both Bi 4 TaO 8 Cl and Bi 4 TaO 8 Cl:Gd 3+ have the singly orthorhombic phase and the flower-like hierarchical structure. The Bi 4 TaO 8 Cl: Gd 3+ has higher photocatalytic activity of MB than that of Bi 4 TaO 8 Cl under visible light irradiation. The higher photocatalytic activity of Bi 4 TaO 8 Cl:Gd 3+ is induced by its lower band gap energy, the higher efficiency charge separation, and transfer process, as well as the photogenerated charge carriers with a longer time, which are confirmed by the longer absorption band edge, lower emission intensity, and higher photocurrent under visible light irradiation. The trapping experiments and electron spin resonance results suggest that˙O 2 − is the predominant active species for the photocatalysis of MB by Bi 4 TaO 8 Cl and Bi 4 TaO 8 Cl: Gd 3+ under visible light irradiation. K E Y W O R D S Bi 4 TaO 8 Cl, Gd 3+ doping, hierarchical structure, methylene blue, photocatalysis

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“…It could be possible that with the lapse of time the concentration of sacrificial reagent was decreased which result in the lower rate of hydrogen production. The photocatalytic activity of NaNbO 3 could be ascribed to its light harvesting ability and can accelerate the transportation of photo-generated electron hole pairs, making the photocatalytic process more efficient [ 9 ]. Furthermore, good crystallinity of NaNbO 3 also reduces the chance of electron hole recombination and enhances the photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Preparation, formation mechanism, photocatalytic, cytotoxicity and antioxidant activity of sodium niobate nanocubes

2018

Self Cite

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A hydrothermal method was employed to prepare the sodium niobate (NaNbO3) nanocubes. We executed time dependent experiments to illustrate the formation mechanism of sodium niobate nanocubes. It was observed that the morphology of NaNbO3 nanocubes was dependent on the reaction time and 12hr reaction time was found to be suitable. Morphology, composition, structure and optical properties of sodium niobate nanocubes were evaluated by scanning electron microscope, X-ray energy-dispersive spectrometer, X-ray diffraction and UV-visible diffuse reflectance spectrometer. The photocatalytic activity of sodium niobate was studied for photocatalytic hydrogen production. It was anticipated that the sodium niobate (NaNbO3) cubes exhibited good photocatalytic activity under UV light irradiation using lactic acid as sacrificial agent. The cytotoxicity activity of sodium niobate nanocubes was studied as well at different concentrations (5 mg/mL, 3 mg/mL, 1 mg/mL, and 0.25 mg/mL) against human colon colorectal carcinoma cell line (HCT116) by MTT assay and EC50 was found to be 1.9 mg/mL. Sodium niobate proved to be a good DPPH free radical scavenging material, tested at different concentrations. It was noticed that peak intensity at 517 nm was decreased after 30 minute incubation, further supporting the antioxidant activity. This study will be useful for design and engineering of materials that can be used in biomedical applications and in photocatalysis.

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F–Bi₄TaO₈Cl flower-like hierarchical structures: controlled preparation, formation mechanism and visible photocatalytic hydrogen production

Abstract: Hydrothermal method was employed to prepare the flower-like hierarchical structures of F–Bi4TaO8Cl for photocatalytic hydrogen production under visible light irradiation.

Cited by 23 publications

References 49 publications

Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Improved photocatalytic activity of Bi₄TaO₈Cl by Gd³⁺ doping

Preparation, formation mechanism, photocatalytic, cytotoxicity and antioxidant activity of sodium niobate nanocubes

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F–Bi4TaO8Cl flower-like hierarchical structures: controlled preparation, formation mechanism and visible photocatalytic hydrogen production

Abstract: Hydrothermal method was employed to prepare the flower-like hierarchical structures of F–Bi4TaO8Cl for photocatalytic hydrogen production under visible light irradiation.

Cited by 23 publications

References 49 publications

Facet Coupling Design for Bi4TaO8Cl/g‐C3N4 via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Facet Coupling Design for Bi4TaO8Cl/g‐C3N4 via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Improved photocatalytic activity of Bi4TaO8Cl by Gd3+ doping

Preparation, formation mechanism, photocatalytic, cytotoxicity and antioxidant activity of sodium niobate nanocubes

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F–Bi₄TaO₈Cl flower-like hierarchical structures: controlled preparation, formation mechanism and visible photocatalytic hydrogen production

Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Facet Coupling Design for Bi₄TaO₈Cl/g‐C₃N₄ via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity

Improved photocatalytic activity of Bi₄TaO₈Cl by Gd³⁺ doping