Constructing Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction for boosted photocatalytic antibiotic oxidation and Cr(VI) reduction

Li, Shijie; Cai, Mingjie; Liu, Yanping; Wang, Chunchun; Yan, Ruyu; Chen, Xiaobo

doi:10.1016/j.apmate.2022.100073

Cited by 197 publications

(84 citation statements)

References 60 publications

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“…4,5 Developing an efficient photocatalyst is one of the most crucial factors in photocatalytic technology. Among the various photocatalysts, bismuth-based compounds, such as Bi 2 WO 6 , 6–8 Bi 2 MoO 6 , 9 and bismuth oxyhalides (BiOX, X = Cl, Br, I), 10–12 have attracted much attention because of their rich sources, low toxicity or non-toxicity, and good photocatalytic activity under ultraviolet or visible light. As members of the bismuth family, BiOX have been reported as promising photocatalysts due to their unique layered structures, which can induce an internal electrostatic field and thus accelerate the separation efficiency of photogenerated carriers.…”

Section: Introductionmentioning

confidence: 99%

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type

Zahid

Han

2022

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type

Zahid

Han

2022

Nanoscale

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“…Thanks to the establishment of the BEF, the photogenerated e – of AgBr had a driving force to consume the photogenerated h + of PI, promoting photogenerated carrier separation and leaving the photogenerated e – and h + in the CB of PI and VB of AgBr, respectively. Evidently, the step-scheme (S-scheme) charge transfer process retained the high reduction capacity of CB electrons in PI and the strong oxidation capacity of VB holes in AgBr, thus contributing to the efficient photodegradation. , …”

Section: Resultsmentioning

confidence: 99%

Fabrication of an S-Scheme AgBr–PI Heterojunction for Biphenyl A Degradation and Its Degradation Pathways and Mechanism

Shao

Fei

et al. 2022

Ind. Eng. Chem. Res.

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Step-like-scheme (S-scheme) heterojunctions have demonstrated their superiority in regulating the directional migration of photo-generated carriers for artificial photosynthesis. However, adjusting the S-scheme charge transfer at the nanostructure interface of the heterostructure is a big challenge. Herein, a novel S-scheme AgBr–polyimide (PI) heterojunction was prepared by in situ deposition of AgBr nanoparticles on polyimide conjugated polymer, which was employed as a base material to anchor AgBr nanoparticles via nitrogen–metal bonds. The optimized AgBr–PI sample, coupling 50 wt % AgBr with PI, shows the highest photocatalytic activity, which could completely remove 10 ppm biphenyl A (BPA) within 15 min under simulated solar visible light. The improvement of the photocatalytic performance was attributed to the valid S-scheme charge transfer mode through building strong interfacial interaction between AgBr and PI, which accelerated the charge separation and retained strong redox abilities. At the same time, the S-scheme charge transfer mechanism is confirmed by electron paramagnetic resonance and in situ irradiated X-ray photoelectron spectroscopy.

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“…Studies have shown that inorganic cesium lead halide perovskite is considered as a hot area for scientists and researchers due to its outstanding performance in different applications. Different reports highlight its usage as photocatalysts for CO 2 reduction (Wang et al, 2019), hydrogen evolution (Zhao et al, 2021) and degradation of different pollutants from the environment and industry (Zhao et al, 2020;Li et al, 2023). To investigate the as-synthesized system of CsPbX 3 /ZnO heterostructure, different investigations have been carried out.…”

Section: Characterization Of Cspbx 3 /Zno Heterostructurementioning

confidence: 99%

Synthesis of cesium lead halide perovskite/zinc oxide (CsPbX3/ZnO, X= Br, I) as heterostructure photocatalyst with improved activity for heavy metal degradation

Gull

Batool

et al. 2022

Front. Chem.

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Inorganic perovskites have been recognized as highly potent materials for the display and medical industries due to their outstanding features. However, there haven’t been many reports on their implications as a photocatalyst for the removal of heavy metals. Photocatalysis has been regarded as a significant approach for the removal of pollutants because of its great sustainability, improved efficiency, and reduced energy consumption. Here, we applied inorganic cesium lead halides (Br and I) with zinc oxide heterostructure as a photocatalyst for the first time. The heterostructure has been synthesized by the traditional hot injection strategy and its photocatalytic activity was systematically investigated. Interestingly, the CsPbX3/ZnO heterostructure as a photocatalyst has a homogeneous geometry and possesses an excellent degradation efficiency of over 50% under xenon UV-Visible light. The CsPbX3/ZnO catalyst carries superior oxidation/reduction properties and ionic conductivity due to the synergistic photogenerated charge carrier and interaction between CsPbX3 and ZnO. The recycling experiment showed the good stability of the catalysts. These findings suggest that inorganic lead halide heterostructure has the potential to be used for heavy metal degradation and water pollution removal catalysts.

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Constructing Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction for boosted photocatalytic antibiotic oxidation and Cr(VI) reduction

Cited by 197 publications

References 60 publications

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type

Fabrication of an S-Scheme AgBr–PI Heterojunction for Biphenyl A Degradation and Its Degradation Pathways and Mechanism

Synthesis of cesium lead halide perovskite/zinc oxide (CsPbX3/ZnO, X= Br, I) as heterostructure photocatalyst with improved activity for heavy metal degradation

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Constructing Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction for boosted photocatalytic antibiotic oxidation and Cr(VI) reduction

Cited by 197 publications

References 60 publications

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBrxI1−x, BiOClxI1−xand BiOClxBr1−xseries varying with pollutant type

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBrxI1−x, BiOClxI1−xand BiOClxBr1−xseries varying with pollutant type

Fabrication of an S-Scheme AgBr–PI Heterojunction for Biphenyl A Degradation and Its Degradation Pathways and Mechanism

Synthesis of cesium lead halide perovskite/zinc oxide (CsPbX3/ZnO, X= Br, I) as heterostructure photocatalyst with improved activity for heavy metal degradation

Contact Info

Product

Resources

About

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type

Insight into the photocatalytic mechanism of the optimalxvalue in the BiOBr_xI_1−x, BiOCl_xI_1−xand BiOCl_xBr_1−xseries varying with pollutant type