Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity

Hongjuan Hao; Dingze Lu; Jintao Zhang

doi:doi:10.11648/j.ijec.20180202.15

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Fabrication of Novel Double Z-Scheme Photocatalyst WO₃-Ag₃PO₄-Bi₂WO₆ with Excellent Visible Photocatalytic Activity

Hongjuan Hao, Dingze Lu, Jintao Zhang

Published in International Journal of Environmental Chemistry (Volume 2, Issue 2)

Received: 2 December 2018 Accepted: 17 December 2018 Published: 22 January 2019

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Abstract

A novel ternary Z-scheme photocatalytic system containing Ag₃PO₄, WO₃ and Bi₂WO₆ was prepared by a one-pot hydrothermal method. The WO₃-Ag₃PO₄-Bi₂WO₆ photocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS). Using Rhodamine B (RhB) as the target of elimination, WO₃-Ag₃PO₄-Bi₂WO₆ exhibited outstanding photocatalytic compared with those of Bi₂WO₆ and WO₃-Bi₂WO₆. The rate constants of photocatalytic degradation of RhB for WO₃-Ag₃PO₄-Bi₂WO₆ (0.2:0.3:1) was 1.9 and 1.3 times that of pure Bi₂WO₆ and WO₃-Bi₂WO₆. In this system, the efficient separation and migration of the photoinduced current carriers was realized through a double Z-scheme electron-transfer mechanism in which the Ag₃PO₄ and WO₃ acted as electron donor. The Ag₃PO₄ served as a charge transmission bridge between the WO₃ and the Bi₂WO₆, and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of Bi₂WO₆ and the holes with high oxidation capability in the valence band (VB) of WO₃, thereby enhancing the photocatalytic activity and stability of Ag₃PO₄. The present study provided a new perspective for enhancing photocatalytic and anti-photocorrosion performances in perishable photocatalysts for organic sewage and other environmental contamination treatments.

Published in	International Journal of Environmental Chemistry (Volume 2, Issue 2)
DOI	10.11648/j.ijec.20180202.15
Page(s)	56-66
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

WO₃-Ag₃PO₄-Bi₂WO₆, Z-Scheme, Charge Transfer, Photocatalytic Activity, Rhodamine B

References

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APA Style

Hongjuan Hao, Dingze Lu, Jintao Zhang. (2019). Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. International Journal of Environmental Chemistry, 2(2), 56-66. https://doi.org/10.11648/j.ijec.20180202.15

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ACS Style

Hongjuan Hao; Dingze Lu; Jintao Zhang. Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. Int. J. Environ. Chem. 2019, 2(2), 56-66. doi: 10.11648/j.ijec.20180202.15

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AMA Style

Hongjuan Hao, Dingze Lu, Jintao Zhang. Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. Int J Environ Chem. 2019;2(2):56-66. doi: 10.11648/j.ijec.20180202.15

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@article{10.11648/j.ijec.20180202.15,
  author = {Hongjuan Hao and Dingze Lu and Jintao Zhang},
  title = {Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity},
  journal = {International Journal of Environmental Chemistry},
  volume = {2},
  number = {2},
  pages = {56-66},
  doi = {10.11648/j.ijec.20180202.15},
  url = {https://doi.org/10.11648/j.ijec.20180202.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijec.20180202.15},
  abstract = {A novel ternary Z-scheme photocatalytic system containing Ag3PO4, WO3 and Bi2WO6 was prepared by a one-pot hydrothermal method. The WO3-Ag3PO4-Bi2WO6 photocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS). Using Rhodamine B (RhB) as the target of elimination, WO3-Ag3PO4-Bi2WO6 exhibited outstanding photocatalytic compared with those of Bi2WO6 and WO3-Bi2WO6. The rate constants of photocatalytic degradation of RhB for WO3-Ag3PO4-Bi2WO6 (0.2:0.3:1) was 1.9 and 1.3 times that of pure Bi2WO6 and WO3-Bi2WO6. In this system, the efficient separation and migration of the photoinduced current carriers was realized through a double Z-scheme electron-transfer mechanism in which the Ag3PO4 and WO3 acted as electron donor. The Ag3PO4 served as a charge transmission bridge between the WO3 and the Bi2WO6, and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of Bi2WO6 and the holes with high oxidation capability in the valence band (VB) of WO3, thereby enhancing the photocatalytic activity and stability of Ag3PO4. The present study provided a new perspective for enhancing photocatalytic and anti-photocorrosion performances in perishable photocatalysts for organic sewage and other environmental contamination treatments.},
 year = {2019}
}

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TY  - JOUR
T1  - Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity
AU  - Hongjuan Hao
AU  - Dingze Lu
AU  - Jintao Zhang
Y1  - 2019/01/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ijec.20180202.15
DO  - 10.11648/j.ijec.20180202.15
T2  - International Journal of Environmental Chemistry
JF  - International Journal of Environmental Chemistry
JO  - International Journal of Environmental Chemistry
SP  - 56
EP  - 66
PB  - Science Publishing Group
SN  - 2640-1460
UR  - https://doi.org/10.11648/j.ijec.20180202.15
AB  - A novel ternary Z-scheme photocatalytic system containing Ag3PO4, WO3 and Bi2WO6 was prepared by a one-pot hydrothermal method. The WO3-Ag3PO4-Bi2WO6 photocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS). Using Rhodamine B (RhB) as the target of elimination, WO3-Ag3PO4-Bi2WO6 exhibited outstanding photocatalytic compared with those of Bi2WO6 and WO3-Bi2WO6. The rate constants of photocatalytic degradation of RhB for WO3-Ag3PO4-Bi2WO6 (0.2:0.3:1) was 1.9 and 1.3 times that of pure Bi2WO6 and WO3-Bi2WO6. In this system, the efficient separation and migration of the photoinduced current carriers was realized through a double Z-scheme electron-transfer mechanism in which the Ag3PO4 and WO3 acted as electron donor. The Ag3PO4 served as a charge transmission bridge between the WO3 and the Bi2WO6, and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of Bi2WO6 and the holes with high oxidation capability in the valence band (VB) of WO3, thereby enhancing the photocatalytic activity and stability of Ag3PO4. The present study provided a new perspective for enhancing photocatalytic and anti-photocorrosion performances in perishable photocatalysts for organic sewage and other environmental contamination treatments.
VL  - 2
IS  - 2
ER  -

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Author Information

Hongjuan Hao

School of Science, Xi’an Polytechnic University, Xi’an, People's Republic of China
Dingze Lu

School of Science, Xi’an Polytechnic University, Xi’an, People's Republic of China
Jintao Zhang

School of Science, Xi’an Polytechnic University, Xi’an, People's Republic of China

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Hongjuan Hao, Dingze Lu, Jintao Zhang. (2019). Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. International Journal of Environmental Chemistry, 2(2), 56-66. https://doi.org/10.11648/j.ijec.20180202.15

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ACS Style

Hongjuan Hao; Dingze Lu; Jintao Zhang. Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. Int. J. Environ. Chem. 2019, 2(2), 56-66. doi: 10.11648/j.ijec.20180202.15

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AMA Style

Hongjuan Hao, Dingze Lu, Jintao Zhang. Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity. Int J Environ Chem. 2019;2(2):56-66. doi: 10.11648/j.ijec.20180202.15

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@article{10.11648/j.ijec.20180202.15,
  author = {Hongjuan Hao and Dingze Lu and Jintao Zhang},
  title = {Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity},
  journal = {International Journal of Environmental Chemistry},
  volume = {2},
  number = {2},
  pages = {56-66},
  doi = {10.11648/j.ijec.20180202.15},
  url = {https://doi.org/10.11648/j.ijec.20180202.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijec.20180202.15},
  abstract = {A novel ternary Z-scheme photocatalytic system containing Ag3PO4, WO3 and Bi2WO6 was prepared by a one-pot hydrothermal method. The WO3-Ag3PO4-Bi2WO6 photocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS). Using Rhodamine B (RhB) as the target of elimination, WO3-Ag3PO4-Bi2WO6 exhibited outstanding photocatalytic compared with those of Bi2WO6 and WO3-Bi2WO6. The rate constants of photocatalytic degradation of RhB for WO3-Ag3PO4-Bi2WO6 (0.2:0.3:1) was 1.9 and 1.3 times that of pure Bi2WO6 and WO3-Bi2WO6. In this system, the efficient separation and migration of the photoinduced current carriers was realized through a double Z-scheme electron-transfer mechanism in which the Ag3PO4 and WO3 acted as electron donor. The Ag3PO4 served as a charge transmission bridge between the WO3 and the Bi2WO6, and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of Bi2WO6 and the holes with high oxidation capability in the valence band (VB) of WO3, thereby enhancing the photocatalytic activity and stability of Ag3PO4. The present study provided a new perspective for enhancing photocatalytic and anti-photocorrosion performances in perishable photocatalysts for organic sewage and other environmental contamination treatments.},
 year = {2019}
}

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TY  - JOUR
T1  - Fabrication of Novel Double Z-Scheme Photocatalyst WO3-Ag3PO4-Bi2WO6 with Excellent Visible Photocatalytic Activity
AU  - Hongjuan Hao
AU  - Dingze Lu
AU  - Jintao Zhang
Y1  - 2019/01/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ijec.20180202.15
DO  - 10.11648/j.ijec.20180202.15
T2  - International Journal of Environmental Chemistry
JF  - International Journal of Environmental Chemistry
JO  - International Journal of Environmental Chemistry
SP  - 56
EP  - 66
PB  - Science Publishing Group
SN  - 2640-1460
UR  - https://doi.org/10.11648/j.ijec.20180202.15
AB  - A novel ternary Z-scheme photocatalytic system containing Ag3PO4, WO3 and Bi2WO6 was prepared by a one-pot hydrothermal method. The WO3-Ag3PO4-Bi2WO6 photocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS). Using Rhodamine B (RhB) as the target of elimination, WO3-Ag3PO4-Bi2WO6 exhibited outstanding photocatalytic compared with those of Bi2WO6 and WO3-Bi2WO6. The rate constants of photocatalytic degradation of RhB for WO3-Ag3PO4-Bi2WO6 (0.2:0.3:1) was 1.9 and 1.3 times that of pure Bi2WO6 and WO3-Bi2WO6. In this system, the efficient separation and migration of the photoinduced current carriers was realized through a double Z-scheme electron-transfer mechanism in which the Ag3PO4 and WO3 acted as electron donor. The Ag3PO4 served as a charge transmission bridge between the WO3 and the Bi2WO6, and the Z-scheme kept the electrons with high reducing capability in the conduction band (CB) of Bi2WO6 and the holes with high oxidation capability in the valence band (VB) of WO3, thereby enhancing the photocatalytic activity and stability of Ag3PO4. The present study provided a new perspective for enhancing photocatalytic and anti-photocorrosion performances in perishable photocatalysts for organic sewage and other environmental contamination treatments.
VL  - 2
IS  - 2
ER  -

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