Au modified Bi2O3-TiO2 hybrid for photocatalytic synthesis of hydrogen peroxide

Liwei Feng; Bingdong Li; Yuqi Xiao; Lijuan Li; Yuqian Zhang; Qiannan Zhao; Guifu Zuo; Xianguang Meng; Vellaisamy A.L. Roy

doi:10.1016/j.catcom.2021.106315

Au modified Bi₂O₃-TiO₂ hybrid for photocatalytic synthesis of hydrogen peroxide

Liwei Feng (Co-first Author), Bingdong Li (Co-first Author), Yuqi Xiao (Co-first Author), Lijuan Li, Yuqian Zhang, Qiannan Zhao, Guifu Zuo, Xianguang Meng^*, Vellaisamy A.L. Roy^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

70 Downloads (CityUHK Scholars)

Abstract

In this work, an Au modified Bi₂O₃-TiO₂ (Au/Bi₂O₃-TiO₂) hybrid is developed as a simple and effective photocatalyst for the production of H₂O₂. The modification of Bi₂O₃ improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO₂ for H₂O₂ production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi₂O₃-TiO₂ photocatalyst for the production of H₂O₂. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO₂ in order to produce concentrated H₂O₂.

Original language	English
Article number	106315
Journal	Catalysis Communications
Volume	155
Online published	14 Apr 2021
DOIs	https://doi.org/10.1016/j.catcom.2021.106315
Publication status	Published - Jul 2021
Externally published	Yes

Research Keywords

Au/TiO2
Bi2O3
H2O2
Single-electron ORR

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This full text is made available under CC-BY-NC-ND 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/

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@article{9ca439c969dd4e039578489c97ac47ca,

title = "Au modified Bi2O3-TiO2 hybrid for photocatalytic synthesis of hydrogen peroxide",

abstract = "In this work, an Au modified Bi2O3-TiO2 (Au/Bi2O3-TiO2) hybrid is developed as a simple and effective photocatalyst for the production of H2O2. The modification of Bi2O3 improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO2 for H2O2 production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi2O3-TiO2 photocatalyst for the production of H2O2. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO2 in order to produce concentrated H2O2.",

keywords = "Au/TiO2, Bi2O3, H2O2, Single-electron ORR",

author = "Liwei Feng and Bingdong Li and Yuqi Xiao and Lijuan Li and Yuqian Zhang and Qiannan Zhao and Guifu Zuo and Xianguang Meng and Roy, {Vellaisamy A.L.}",

year = "2021",

month = jul,

doi = "10.1016/j.catcom.2021.106315",

language = "English",

volume = "155",

journal = "Catalysis Communications",

issn = "1566-7367",

publisher = "Elsevier",

}

TY - JOUR

T1 - Au modified Bi2O3-TiO2 hybrid for photocatalytic synthesis of hydrogen peroxide

AU - Feng, Liwei

AU - Li, Bingdong

AU - Xiao, Yuqi

AU - Li, Lijuan

AU - Zhang, Yuqian

AU - Zhao, Qiannan

AU - Zuo, Guifu

AU - Meng, Xianguang

AU - Roy, Vellaisamy A.L.

PY - 2021/7

Y1 - 2021/7

N2 - In this work, an Au modified Bi2O3-TiO2 (Au/Bi2O3-TiO2) hybrid is developed as a simple and effective photocatalyst for the production of H2O2. The modification of Bi2O3 improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO2 for H2O2 production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi2O3-TiO2 photocatalyst for the production of H2O2. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO2 in order to produce concentrated H2O2.

AB - In this work, an Au modified Bi2O3-TiO2 (Au/Bi2O3-TiO2) hybrid is developed as a simple and effective photocatalyst for the production of H2O2. The modification of Bi2O3 improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO2 for H2O2 production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi2O3-TiO2 photocatalyst for the production of H2O2. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO2 in order to produce concentrated H2O2.

KW - Au/TiO2

KW - Bi2O3

KW - H2O2

KW - Single-electron ORR

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U2 - 10.1016/j.catcom.2021.106315

DO - 10.1016/j.catcom.2021.106315

M3 - RGC 21 - Publication in refereed journal

SN - 1566-7367

VL - 155

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106315

ER -