Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2

Wanyu Han; Tianhui Wu; Shuang Zhu

doi:doi:10.11648/j.ajwse.20190502.15

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Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF₄:Ho³⁺@TiO₂

Wanyu Han, Tianhui Wu, Shuang Zhu

Published in American Journal of Water Science and Engineering (Volume 5, Issue 2)

Received: 9 May 2019 Accepted: 11 June 2019 Published: 4 July 2019

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Abstract

β-NaYF₄:Ho³⁺@TiO₂–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometries, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), electron spin resonance (ESR), and photoelectrochemical properties were used to characterize the photocatalyst. The results revealed that rGO as an excellent platform and successfully to load NYFHo@TO core–shell microcrystals. In this photocatalyst, the loading of UC microcrystals is expected to emit UV (290 nm) light after absorbing Vis (450 nm) light of the solar spectrum and the optical response of the rGO is enhanced from UV to Vis. so as to realize the visible light-driven photocatalysis of TiO₂. It was found that add to rGO can efficient charge separation, extended light absorption range (red-shifted to 402.6 nm), enhanced adsorption performance, and improve photocatalytic activity. This novel tenary photocatalyst can reach decomposition rate of RhB as high as 87% after 10 h of irradiation by visible-light Xe lamp. Compared with the blank experiment, the efficiency was significantly improved. It is of great significance to design an effective solar light-driven photocatalysis in promoting environmental protection.

Published in	American Journal of Water Science and Engineering (Volume 5, Issue 2)
DOI	10.11648/j.ajwse.20190502.15
Page(s)	88-95
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

Wastewater Treatment, Upconversion, Visible Light Photocatalysis

References

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APA Style

Wanyu Han, Tianhui Wu, Shuang Zhu. (2019). Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. American Journal of Water Science and Engineering, 5(2), 88-95. https://doi.org/10.11648/j.ajwse.20190502.15

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ACS Style

Wanyu Han; Tianhui Wu; Shuang Zhu. Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. Am. J. Water Sci. Eng. 2019, 5(2), 88-95. doi: 10.11648/j.ajwse.20190502.15

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AMA Style

Wanyu Han, Tianhui Wu, Shuang Zhu. Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. Am J Water Sci Eng. 2019;5(2):88-95. doi: 10.11648/j.ajwse.20190502.15

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@article{10.11648/j.ajwse.20190502.15,
  author = {Wanyu Han and Tianhui Wu and Shuang Zhu},
  title = {Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2},
  journal = {American Journal of Water Science and Engineering},
  volume = {5},
  number = {2},
  pages = {88-95},
  doi = {10.11648/j.ajwse.20190502.15},
  url = {https://doi.org/10.11648/j.ajwse.20190502.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20190502.15},
  abstract = {β-NaYF4:Ho3+@TiO2–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometries, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), electron spin resonance (ESR), and photoelectrochemical properties were used to characterize the photocatalyst. The results revealed that rGO as an excellent platform and successfully to load NYFHo@TO core–shell microcrystals. In this photocatalyst, the loading of UC microcrystals is expected to emit UV (290 nm) light after absorbing Vis (450 nm) light of the solar spectrum and the optical response of the rGO is enhanced from UV to Vis. so as to realize the visible light-driven photocatalysis of TiO2. It was found that add to rGO can efficient charge separation, extended light absorption range (red-shifted to 402.6 nm), enhanced adsorption performance, and improve photocatalytic activity. This novel tenary photocatalyst can reach decomposition rate of RhB as high as 87% after 10 h of irradiation by visible-light Xe lamp. Compared with the blank experiment, the efficiency was significantly improved. It is of great significance to design an effective solar light-driven photocatalysis in promoting environmental protection.},
 year = {2019}
}

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TY  - JOUR
T1  - Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2
AU  - Wanyu Han
AU  - Tianhui Wu
AU  - Shuang Zhu
Y1  - 2019/07/04
PY  - 2019
N1  - https://doi.org/10.11648/j.ajwse.20190502.15
DO  - 10.11648/j.ajwse.20190502.15
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 88
EP  - 95
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20190502.15
AB  - β-NaYF4:Ho3+@TiO2–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometries, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), electron spin resonance (ESR), and photoelectrochemical properties were used to characterize the photocatalyst. The results revealed that rGO as an excellent platform and successfully to load NYFHo@TO core–shell microcrystals. In this photocatalyst, the loading of UC microcrystals is expected to emit UV (290 nm) light after absorbing Vis (450 nm) light of the solar spectrum and the optical response of the rGO is enhanced from UV to Vis. so as to realize the visible light-driven photocatalysis of TiO2. It was found that add to rGO can efficient charge separation, extended light absorption range (red-shifted to 402.6 nm), enhanced adsorption performance, and improve photocatalytic activity. This novel tenary photocatalyst can reach decomposition rate of RhB as high as 87% after 10 h of irradiation by visible-light Xe lamp. Compared with the blank experiment, the efficiency was significantly improved. It is of great significance to design an effective solar light-driven photocatalysis in promoting environmental protection.
VL  - 5
IS  - 2
ER  -

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Author Information

Wanyu Han

Power China Huadong Engineering Corporation Limited, Hangzhou, China
Tianhui Wu

Power China Huadong Engineering Corporation Limited, Hangzhou, China
Shuang Zhu

Power China Huadong Engineering Corporation Limited, Hangzhou, China

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Wanyu Han, Tianhui Wu, Shuang Zhu. (2019). Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. American Journal of Water Science and Engineering, 5(2), 88-95. https://doi.org/10.11648/j.ajwse.20190502.15

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ACS Style

Wanyu Han; Tianhui Wu; Shuang Zhu. Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. Am. J. Water Sci. Eng. 2019, 5(2), 88-95. doi: 10.11648/j.ajwse.20190502.15

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AMA Style

Wanyu Han, Tianhui Wu, Shuang Zhu. Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. Am J Water Sci Eng. 2019;5(2):88-95. doi: 10.11648/j.ajwse.20190502.15

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@article{10.11648/j.ajwse.20190502.15,
  author = {Wanyu Han and Tianhui Wu and Shuang Zhu},
  title = {Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2},
  journal = {American Journal of Water Science and Engineering},
  volume = {5},
  number = {2},
  pages = {88-95},
  doi = {10.11648/j.ajwse.20190502.15},
  url = {https://doi.org/10.11648/j.ajwse.20190502.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20190502.15},
  abstract = {β-NaYF4:Ho3+@TiO2–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometries, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), electron spin resonance (ESR), and photoelectrochemical properties were used to characterize the photocatalyst. The results revealed that rGO as an excellent platform and successfully to load NYFHo@TO core–shell microcrystals. In this photocatalyst, the loading of UC microcrystals is expected to emit UV (290 nm) light after absorbing Vis (450 nm) light of the solar spectrum and the optical response of the rGO is enhanced from UV to Vis. so as to realize the visible light-driven photocatalysis of TiO2. It was found that add to rGO can efficient charge separation, extended light absorption range (red-shifted to 402.6 nm), enhanced adsorption performance, and improve photocatalytic activity. This novel tenary photocatalyst can reach decomposition rate of RhB as high as 87% after 10 h of irradiation by visible-light Xe lamp. Compared with the blank experiment, the efficiency was significantly improved. It is of great significance to design an effective solar light-driven photocatalysis in promoting environmental protection.},
 year = {2019}
}

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TY  - JOUR
T1  - Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2
AU  - Wanyu Han
AU  - Tianhui Wu
AU  - Shuang Zhu
Y1  - 2019/07/04
PY  - 2019
N1  - https://doi.org/10.11648/j.ajwse.20190502.15
DO  - 10.11648/j.ajwse.20190502.15
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 88
EP  - 95
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20190502.15
AB  - β-NaYF4:Ho3+@TiO2–reduced graphene oxide (NYFH@TO–rGO) ternary composites photocatalysts were prepared via a three-step method and used for cleanup of Rhodamine B (RhB) aqueous solution under visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), fluorescence spectrometries, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), electron spin resonance (ESR), and photoelectrochemical properties were used to characterize the photocatalyst. The results revealed that rGO as an excellent platform and successfully to load NYFHo@TO core–shell microcrystals. In this photocatalyst, the loading of UC microcrystals is expected to emit UV (290 nm) light after absorbing Vis (450 nm) light of the solar spectrum and the optical response of the rGO is enhanced from UV to Vis. so as to realize the visible light-driven photocatalysis of TiO2. It was found that add to rGO can efficient charge separation, extended light absorption range (red-shifted to 402.6 nm), enhanced adsorption performance, and improve photocatalytic activity. This novel tenary photocatalyst can reach decomposition rate of RhB as high as 87% after 10 h of irradiation by visible-light Xe lamp. Compared with the blank experiment, the efficiency was significantly improved. It is of great significance to design an effective solar light-driven photocatalysis in promoting environmental protection.
VL  - 5
IS  - 2
ER  -

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