Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H2O2 production

Xianguang Meng; Peixiao Zong; Liang Wang; Fan Yang; Weishu Hou; Songtao Zhang; Bingdong Li; Zhaoliang Guo; Shanshan Liu; Guifu Zuo; Yi Du; Tao Wang; Vellaisamy A.L. Roy

doi:10.1016/j.catcom.2019.105860

Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H₂O₂ production

Xianguang Meng
, Peixiao Zong
, Liang Wang
, Fan Yang
, Weishu Hou
, Songtao Zhang
, Bingdong Li
, Zhaoliang Guo
, Shanshan Liu
, Guifu Zuo^*
, Yi Du
, Tao Wang
, Vellaisamy A.L. Roy^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

62 Citations (Scopus)

26 Downloads (CityUHK Scholars)

Abstract

In this study, Au-nanoparticle-supported crystalline ZnO (Au/ZnO) is found to be a simple and efficient photocatalyst for direct H₂O₂ synthesis in an aerated aqueous solution. Compared with widely studied Au-nanoparticle-supported anatase TiO₂ photocatalyst, Au/ZnO shows almost one order of magnitude higher activity in H₂O₂ production. The site-specific deposition of smaller Au nanococatalyst on ZnO delivers best photocatalytic performance and the H₂O₂ production is relatively stable with a rate more than 1.5 mmol L⁻¹ h⁻¹. The electron spin resonance studies reveal that the H₂O₂ is produced through direct 2e⁻ oxygen reduction over the optimized Au/ZnO photocatalyst.

Original language	English
Article number	105860
Journal	Catalysis Communications
Volume	134
Online published	24 Oct 2019
DOIs	https://doi.org/10.1016/j.catcom.2019.105860
Publication status	Published - 10 Jan 2020

Research Keywords

Au/ZnO
Hydrogen peroxide
Oxygen reduction
Photocatalysis

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Cite this

@article{ebccc1bfbac54c3da3ce707c3d3721d7,

title = "Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H2O2 production",

abstract = "In this study, Au-nanoparticle-supported crystalline ZnO (Au/ZnO) is found to be a simple and efficient photocatalyst for direct H2O2 synthesis in an aerated aqueous solution. Compared with widely studied Au-nanoparticle-supported anatase TiO2 photocatalyst, Au/ZnO shows almost one order of magnitude higher activity in H2O2 production. The site-specific deposition of smaller Au nanococatalyst on ZnO delivers best photocatalytic performance and the H2O2 production is relatively stable with a rate more than 1.5 mmol L−1 h−1. The electron spin resonance studies reveal that the H2O2 is produced through direct 2e− oxygen reduction over the optimized Au/ZnO photocatalyst.",

keywords = "Au/ZnO, Hydrogen peroxide, Oxygen reduction, Photocatalysis",

author = "Xianguang Meng and Peixiao Zong and Liang Wang and Fan Yang and Weishu Hou and Songtao Zhang and Bingdong Li and Zhaoliang Guo and Shanshan Liu and Guifu Zuo and Yi Du and Tao Wang and Roy, \{Vellaisamy A.L.\}",

year = "2020",

month = jan,

day = "10",

doi = "10.1016/j.catcom.2019.105860",

language = "English",

volume = "134",

journal = "Catalysis Communications",

issn = "1566-7367",

publisher = "Elsevier",

}

TY - JOUR

T1 - Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H2O2 production

AU - Meng, Xianguang

AU - Zong, Peixiao

AU - Wang, Liang

AU - Yang, Fan

AU - Hou, Weishu

AU - Zhang, Songtao

AU - Li, Bingdong

AU - Guo, Zhaoliang

AU - Liu, Shanshan

AU - Zuo, Guifu

AU - Du, Yi

AU - Wang, Tao

AU - Roy, Vellaisamy A.L.

PY - 2020/1/10

Y1 - 2020/1/10

N2 - In this study, Au-nanoparticle-supported crystalline ZnO (Au/ZnO) is found to be a simple and efficient photocatalyst for direct H2O2 synthesis in an aerated aqueous solution. Compared with widely studied Au-nanoparticle-supported anatase TiO2 photocatalyst, Au/ZnO shows almost one order of magnitude higher activity in H2O2 production. The site-specific deposition of smaller Au nanococatalyst on ZnO delivers best photocatalytic performance and the H2O2 production is relatively stable with a rate more than 1.5 mmol L−1 h−1. The electron spin resonance studies reveal that the H2O2 is produced through direct 2e− oxygen reduction over the optimized Au/ZnO photocatalyst.

AB - In this study, Au-nanoparticle-supported crystalline ZnO (Au/ZnO) is found to be a simple and efficient photocatalyst for direct H2O2 synthesis in an aerated aqueous solution. Compared with widely studied Au-nanoparticle-supported anatase TiO2 photocatalyst, Au/ZnO shows almost one order of magnitude higher activity in H2O2 production. The site-specific deposition of smaller Au nanococatalyst on ZnO delivers best photocatalytic performance and the H2O2 production is relatively stable with a rate more than 1.5 mmol L−1 h−1. The electron spin resonance studies reveal that the H2O2 is produced through direct 2e− oxygen reduction over the optimized Au/ZnO photocatalyst.

KW - Au/ZnO

KW - Hydrogen peroxide

KW - Oxygen reduction

KW - Photocatalysis

UR - https://www.scopus.com/pages/publications/85074232118

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85074232118&origin=recordpage

U2 - 10.1016/j.catcom.2019.105860

DO - 10.1016/j.catcom.2019.105860

M3 - RGC 21 - Publication in refereed journal

SN - 1566-7367

VL - 134

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 105860

ER -