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Novel Ag-Bridged Z-Scheme CdS/Ag/Bi 2 WO 6 Heterojunction: Excellent Photocatalytic Performance and Insight into the Underlying Mechanism.

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Title: Novel Ag-Bridged Z-Scheme CdS/Ag/Bi 2 WO 6 Heterojunction: Excellent Photocatalytic Performance and Insight into the Underlying Mechanism.
Authors: Wang, Fangzhi1 (AUTHOR) jiangli8227@sina.com, Jiang, Lihua1 (AUTHOR), Zhang, Guizhai1 (AUTHOR), Ye, Zixian1 (AUTHOR), He, Qiuyue1 (AUTHOR), Li, Jing1 (AUTHOR), Li, Peng1 (AUTHOR), Chen, Yan1 (AUTHOR), Zhou, Xiaoyan1 (AUTHOR), Shang, Ran1 (AUTHOR)
Source: Nanomaterials (2079-4991). Feb2024, Vol. 14 Issue 3, p315. 14p.
Subjects: Charge carriers, Heterojunctions, Semiconductor manufacturing, Charge transfer, Visible spectra, Rhodamine B, Photoinduced electron transfer
Abstract: The construction of semiconductor heterojunction photocatalysts that improve the separation and transfer of photoinduced charge carriers is an effective and widely employed strategy to boost photocatalytic performance. Herein, we have successfully constructed a CdS/Ag/Bi2WO6 Z-scheme heterojunction with an Ag-bridge as an effective charge transfer channel by a facile process. The heterostructure consists of both CdS and Ag nanoparticles anchored on the surface of Bi2WO6 nanosheets. The photocatalytic efficiency of the CdS/Ag/Bi2WO6 system was studied by the decontamination of tetracycline (TC) and Rhodamine B (RhB) under visible light irradiation (λ ≥ 420). The results exhibited that CdS/Ag/Bi2WO6 shows markedly higher photocatalytic performance than that of CdS, Bi2WO6, Ag/Bi2WO6, and CdS/Bi2WO6. The trapping experiment results verified that the •O2− and h+ radicals are the key active species. The results of photoluminescence spectral analysis and photocurrent responses indicated that the CdS/Ag/Bi2WO6 heterojunctions exhibit exceptional efficiency in separating and transferring photoinduced electron−hole pairs. Based on a series of characterization results, the boosted photocatalytic activity of the CdS/Ag/Bi2WO6 system is mostly due to the successful formation of the Ag-bridged Z-scheme heterojunction; these can not only inhibit the recombination rate of photoinduced charge carriers but also possess a splendid redox capacity. The work provides a way for designing a Z-scheme photocatalytic system based on Ag-bridged for boosting photocatalytic performance. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Novel Ag-Bridged Z-Scheme CdS/Ag/Bi 2 WO 6 Heterojunction: Excellent Photocatalytic Performance and Insight into the Underlying Mechanism.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Fangzhi%22">Wang, Fangzhi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jiangli8227@sina.com</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Lihua%22">Jiang, Lihua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Guizhai%22">Zhang, Guizhai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Zixian%22">Ye, Zixian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Qiuyue%22">He, Qiuyue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jing%22">Li, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Peng%22">Li, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yan%22">Chen, Yan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiaoyan%22">Zhou, Xiaoyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shang%2C+Ran%22">Shang, Ran</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Feb2024, Vol. 14 Issue 3, p315. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Charge+carriers%22">Charge carriers</searchLink><br /><searchLink fieldCode="DE" term="%22Heterojunctions%22">Heterojunctions</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+manufacturing%22">Semiconductor manufacturing</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+transfer%22">Charge transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Visible+spectra%22">Visible spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Rhodamine+B%22">Rhodamine B</searchLink><br /><searchLink fieldCode="DE" term="%22Photoinduced+electron+transfer%22">Photoinduced electron transfer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The construction of semiconductor heterojunction photocatalysts that improve the separation and transfer of photoinduced charge carriers is an effective and widely employed strategy to boost photocatalytic performance. Herein, we have successfully constructed a CdS/Ag/Bi2WO6 Z-scheme heterojunction with an Ag-bridge as an effective charge transfer channel by a facile process. The heterostructure consists of both CdS and Ag nanoparticles anchored on the surface of Bi2WO6 nanosheets. The photocatalytic efficiency of the CdS/Ag/Bi2WO6 system was studied by the decontamination of tetracycline (TC) and Rhodamine B (RhB) under visible light irradiation (λ ≥ 420). The results exhibited that CdS/Ag/Bi2WO6 shows markedly higher photocatalytic performance than that of CdS, Bi2WO6, Ag/Bi2WO6, and CdS/Bi2WO6. The trapping experiment results verified that the •O2− and h+ radicals are the key active species. The results of photoluminescence spectral analysis and photocurrent responses indicated that the CdS/Ag/Bi2WO6 heterojunctions exhibit exceptional efficiency in separating and transferring photoinduced electron−hole pairs. Based on a series of characterization results, the boosted photocatalytic activity of the CdS/Ag/Bi2WO6 system is mostly due to the successful formation of the Ag-bridged Z-scheme heterojunction; these can not only inhibit the recombination rate of photoinduced charge carriers but also possess a splendid redox capacity. The work provides a way for designing a Z-scheme photocatalytic system based on Ag-bridged for boosting photocatalytic performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano14030315
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      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 315
    Subjects:
      – SubjectFull: Charge carriers
        Type: general
      – SubjectFull: Heterojunctions
        Type: general
      – SubjectFull: Semiconductor manufacturing
        Type: general
      – SubjectFull: Charge transfer
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      – SubjectFull: Visible spectra
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      – SubjectFull: Rhodamine B
        Type: general
      – SubjectFull: Photoinduced electron transfer
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    Titles:
      – TitleFull: Novel Ag-Bridged Z-Scheme CdS/Ag/Bi 2 WO 6 Heterojunction: Excellent Photocatalytic Performance and Insight into the Underlying Mechanism.
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              M: 02
              Text: Feb2024
              Type: published
              Y: 2024
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