Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO4/β-Bi2O3 heterojunction microspheres and O2-free hole-induced selective dechloridation conversion with H2 evolution

Ning Sun; Yang Qu; Chunhua Yang; Zhaodi Yang; Rui Yan; Wenyu E; Ziqing Zhang; Zhijun Li; Haonan Li; Iltaf Khan; Rui Sun; Liqiang Jing; Honggang Fu

doi:10.1016/j.apcatb.2019.118313

Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO₄/β-Bi₂O₃ heterojunction microspheres and O₂-free hole-induced selective dechloridation conversion with H₂ evolution

Ning Sun, Yang Qu^*, Chunhua Yang, Zhaodi Yang, Rui Yan, Wenyu E, Ziqing Zhang, Zhijun Li, Haonan Li, Iltaf Khan, Rui Sun, Liqiang Jing, Honggang Fu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

Herein, hierarchical BiPO₄/β-Bi₂O₃ microspheres have been successfully synthesized via one-step annealing pyrophosphate anchored (BiO)₂CO₃ microspheres, and utilized as efficient and recyclable photocatalysts for CPs degradation. Notably, the amount-optimized heterojunctional microspheres display high photocatalytic activity for 2-CP degradation, even with 5-time enhancement compared to the classical TiO₂ (P25). By means of the surface photovoltage spectra, photocurrent action spectra and CPs adsorption curves, the exceptional photoactivities are mainly attributed to the strong adsorption of 2-CP due to the complexation of Bi on Bi₂O₃ with empty orbitals and Cl of 2-CP with lone-pair electrons for efficiently modulating holes, and to the prolonged charge lifetime by transferring the photogenerated proper-energy-level electrons of β-Bi₂O₃ to the in-situ formed nano-BiPO₄. It is confirmed that the photogenerated holes are dominant to induce the degradation of 2-CP on BiPO₄/β-Bi₂O₃, and to initiate the selective conversion to the value-added intermediates like 4-acetoxyphenol on O₂-free condition, along with H₂ evolution.

Original language	English
Article number	118313
Journal	Applied Catalysis B: Environmental
Volume	263
DOIs	https://doi.org/10.1016/j.apcatb.2019.118313
State	Published - Apr 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

H evolution
Hierarchical BiPO/β-BiO microsphere
Monochlorophenol
Photocatalytic degradation
Selective conversion

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcatb.2019.118313

Cite this

Sun, N., Qu, Y., Yang, C., Yang, Z., Yan, R., E, W., Zhang, Z., Li, Z., Li, H., Khan, I., Sun, R., Jing, L., & Fu, H. (2020). Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO₄/β-Bi₂O₃ heterojunction microspheres and O₂-free hole-induced selective dechloridation conversion with H₂ evolution. Applied Catalysis B: Environmental, 263, Article 118313. https://doi.org/10.1016/j.apcatb.2019.118313

@article{d442047aa15845589321d09a207503d2,

title = "Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO4/β-Bi2O3 heterojunction microspheres and O2-free hole-induced selective dechloridation conversion with H2 evolution",

abstract = "Herein, hierarchical BiPO4/β-Bi2O3 microspheres have been successfully synthesized via one-step annealing pyrophosphate anchored (BiO)2CO3 microspheres, and utilized as efficient and recyclable photocatalysts for CPs degradation. Notably, the amount-optimized heterojunctional microspheres display high photocatalytic activity for 2-CP degradation, even with 5-time enhancement compared to the classical TiO2 (P25). By means of the surface photovoltage spectra, photocurrent action spectra and CPs adsorption curves, the exceptional photoactivities are mainly attributed to the strong adsorption of 2-CP due to the complexation of Bi on Bi2O3 with empty orbitals and Cl of 2-CP with lone-pair electrons for efficiently modulating holes, and to the prolonged charge lifetime by transferring the photogenerated proper-energy-level electrons of β-Bi2O3 to the in-situ formed nano-BiPO4. It is confirmed that the photogenerated holes are dominant to induce the degradation of 2-CP on BiPO4/β-Bi2O3, and to initiate the selective conversion to the value-added intermediates like 4-acetoxyphenol on O2-free condition, along with H2 evolution.",

keywords = "H evolution, Hierarchical BiPO/β-BiO microsphere, Monochlorophenol, Photocatalytic degradation, Selective conversion",

author = "Ning Sun and Yang Qu and Chunhua Yang and Zhaodi Yang and Rui Yan and Wenyu E and Ziqing Zhang and Zhijun Li and Haonan Li and Iltaf Khan and Rui Sun and Liqiang Jing and Honggang Fu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = apr,

doi = "10.1016/j.apcatb.2019.118313",

language = "English",

volume = "263",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

}

Sun, N, Qu, Y, Yang, C, Yang, Z, Yan, R, E, W, Zhang, Z, Li, Z, Li, H, Khan, I, Sun, R, Jing, L & Fu, H 2020, 'Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO₄/β-Bi₂O₃ heterojunction microspheres and O₂-free hole-induced selective dechloridation conversion with H₂ evolution', Applied Catalysis B: Environmental, vol. 263, 118313. https://doi.org/10.1016/j.apcatb.2019.118313

Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO₄/β-Bi₂O₃ heterojunction microspheres and O₂-free hole-induced selective dechloridation conversion with H₂ evolution. / Sun, Ning; Qu, Yang; Yang, Chunhua et al.
In: Applied Catalysis B: Environmental, Vol. 263, 118313, 04.2020.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Efficiently photocatalytic degradation of monochlorophenol on in-situ fabricated BiPO4/β-Bi2O3 heterojunction microspheres and O2-free hole-induced selective dechloridation conversion with H2 evolution

AU - Sun, Ning

AU - Qu, Yang

AU - Yang, Chunhua

AU - Yang, Zhaodi

AU - Yan, Rui

AU - E, Wenyu

AU - Zhang, Ziqing

AU - Li, Zhijun

AU - Li, Haonan

AU - Khan, Iltaf

AU - Sun, Rui

AU - Jing, Liqiang

AU - Fu, Honggang

PY - 2020/4

Y1 - 2020/4

N2 - Herein, hierarchical BiPO4/β-Bi2O3 microspheres have been successfully synthesized via one-step annealing pyrophosphate anchored (BiO)2CO3 microspheres, and utilized as efficient and recyclable photocatalysts for CPs degradation. Notably, the amount-optimized heterojunctional microspheres display high photocatalytic activity for 2-CP degradation, even with 5-time enhancement compared to the classical TiO2 (P25). By means of the surface photovoltage spectra, photocurrent action spectra and CPs adsorption curves, the exceptional photoactivities are mainly attributed to the strong adsorption of 2-CP due to the complexation of Bi on Bi2O3 with empty orbitals and Cl of 2-CP with lone-pair electrons for efficiently modulating holes, and to the prolonged charge lifetime by transferring the photogenerated proper-energy-level electrons of β-Bi2O3 to the in-situ formed nano-BiPO4. It is confirmed that the photogenerated holes are dominant to induce the degradation of 2-CP on BiPO4/β-Bi2O3, and to initiate the selective conversion to the value-added intermediates like 4-acetoxyphenol on O2-free condition, along with H2 evolution.

AB - Herein, hierarchical BiPO4/β-Bi2O3 microspheres have been successfully synthesized via one-step annealing pyrophosphate anchored (BiO)2CO3 microspheres, and utilized as efficient and recyclable photocatalysts for CPs degradation. Notably, the amount-optimized heterojunctional microspheres display high photocatalytic activity for 2-CP degradation, even with 5-time enhancement compared to the classical TiO2 (P25). By means of the surface photovoltage spectra, photocurrent action spectra and CPs adsorption curves, the exceptional photoactivities are mainly attributed to the strong adsorption of 2-CP due to the complexation of Bi on Bi2O3 with empty orbitals and Cl of 2-CP with lone-pair electrons for efficiently modulating holes, and to the prolonged charge lifetime by transferring the photogenerated proper-energy-level electrons of β-Bi2O3 to the in-situ formed nano-BiPO4. It is confirmed that the photogenerated holes are dominant to induce the degradation of 2-CP on BiPO4/β-Bi2O3, and to initiate the selective conversion to the value-added intermediates like 4-acetoxyphenol on O2-free condition, along with H2 evolution.

KW - H evolution

KW - Hierarchical BiPO/β-BiO microsphere

KW - Monochlorophenol

KW - Photocatalytic degradation

KW - Selective conversion

UR - https://www.scopus.com/pages/publications/85075345345

U2 - 10.1016/j.apcatb.2019.118313

DO - 10.1016/j.apcatb.2019.118313

M3 - Article

AN - SCOPUS:85075345345

SN - 0926-3373

VL - 263

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 118313

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