Synthesis and photoactivity enhancement of Ba doped Bi2WO6 photocatalyst

Li, Wen Ting; Huang, Wan; Zhou, Huan; Yin, Hao; Zheng, Yi; Song, Xu Chun

doi:10.1016/j.materresbull.2015.01.023

Cited by 30 publications

(8 citation statements)

References 25 publications

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“…Due to internal electric field, the recombination of charge carriers is reduced and sensor/biosensor’s catalytic activity increases. In addition, its application areas can be expanded by dopping treatment [ 34 ] and the heterojunction construction [ 35 ]. In these methods, the coupling with two different semiconductor into heterojunctions is effective approach [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Sensitive sandwich-type electrochemical SARS-CoV‑2 nucleocapsid protein immunosensor

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Sensitive sandwich-type electrochemical SARS-CoV‑2 nucleocapsid protein immunosensor

et al. 2021

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“…However, common alkaline earth metal ions with good stability and charge-transfer properties (such as Ba 2+ ) are rarely used to modify the electronic structure of semiconductors. Appropriate Ba doping can not only optimize the electronic structure but also play the role of an electron trap, which is conducive to the separation of photogenerated electron hole pairs. , …”

Section: Introductionmentioning

confidence: 99%

“…Appropriate Ba doping can not only optimize the electronic structure but also play the role of an electron trap, which is conducive to the separation of photogenerated electron hole pairs. 24,25 Considering that alkaline earth metal ions possess excellent stability and charge-transfer properties, the simultaneous introduction of an alkaline earth metal (Ba) dopant and construction of OVs into BiOBr nanosheets was realized by an ionic-liquid-assisted hydrothermal method in this work. The ionic liquids not only provide a bromine source but also promote the generation of a large number of oxygen vacancies.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Electronic Structure of BiOBr Nanosheets via Combined Ba Doping and Oxygen Vacancies for Promoted Photocatalysis

et al. 2021

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The promotion of BiOBr via simultaneous alkaline earth metal (Ba) doping and massive oxygen vacancies (OVs) was for the first time investigated toward the photocatalytic removal of NO in air. The adsorption of NO and the generation of reactive oxygen species have been significantly enhanced with the synergistic effect of the Ba dopant and OVs, as evidenced by the highly combined experimental characterization and theoretical simulations, which is beneficial to optimizing the performance of photocatalytic NO removal. The removal rate on Ba-doped BiOBr with OVs is ∼10 times higher than that on the pristine BiOBr after 30 min of visible-light irradiation. Significantly, in situ DRIFTS spectra and density functional theory calculations revealed that the NO + intermediate forming on the Ba-doped BiOBr with OVs efficiently reduces the energy barrier and inhibits the generation of toxic byproducts, contributing to the optimization of the reaction process. The findings of this work go deep into the understanding of the synergistic effect of alkaline earth metal doping and OVs for elevating the photocatalysis efficiency.

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“…In order to achieve efficient visible light utilization, the discovery of active visible light-driven photocatalysts has attracted much attention. Recently, numerous oxides such as Ag 2 ZrO 3 , Bi 2 O 3 /g-C 3 N 4 , Bi 2 WO 6 , and Bi 12 TiO 20 have been reported to show high activities [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Visible-light photocatalysis with bismuth titanate (Bi12TiO20) particles synthesized by the oxidant peroxide method (OPM)

Nogueira

Longo

Leite

et al. 2015

Ceramics International

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In this paper, we have successfully synthesized high quality single crystalline bismuth titanate with sillenite (Bi 12 TiO 20) phase by the oxidant peroxide method (OPM). The structures of precipitate and calcined materials were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), X-ray photoluminescence (PL) spectroscopy, thermogravimetry analysis (TG), differential scanning calorimetry (DSC) Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), scanning electron microscopy (SEM) and nitrogen adsorption/desorption. The XRD analysis showed that the calcination temperature of 500 1C and time of 1 h was found to be sufficient to produce Bi 12 TiO 20 powder and the DRS confirmed that the photoresponse of the prepared bismuth titanate extended to the visible light region at about 465 nm representing a possible photoactivity under solar irradiation. The photocatalytic activities were verified through the photocatalytic degradation of rhodamine b (RhB) as a model compound under visible light irradiation. It was found that the material calcined at 400 1C exhibits good photocatalytic activity compared to commercial TiO 2 , the kinetic rate constant over 400 1C is 0.006 min À 1 , which is 9.4 times higher than commercial TiO 2. The higher photocatalytic activity of this material is mainly attributed to an increase in the extension of its optical absorption spectrum, as compared to TiO 2 .

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Synthesis and photoactivity enhancement of Ba doped Bi2WO6 photocatalyst

Cited by 30 publications

References 25 publications

Sensitive sandwich-type electrochemical SARS-CoV‑2 nucleocapsid protein immunosensor

Sensitive sandwich-type electrochemical SARS-CoV‑2 nucleocapsid protein immunosensor

Optimizing the Electronic Structure of BiOBr Nanosheets via Combined Ba Doping and Oxygen Vacancies for Promoted Photocatalysis

Visible-light photocatalysis with bismuth titanate (Bi12TiO20) particles synthesized by the oxidant peroxide method (OPM)

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