Anchoring AuCu alloy nanoparticles on TiO2 nanosheets: Exploiting synergistic effects and directed electron transfer for enhanced photocatalytic H2 evolution

Yahao Zhao; Furong Ye; Changcun Han; Peng Liu; Wen Liu; Yizhong Huang; Xupeng Chen; Jiayi Tian

doi:10.1016/j.ceramint.2024.11.077

Anchoring AuCu alloy nanoparticles on TiO₂ nanosheets: Exploiting synergistic effects and directed electron transfer for enhanced photocatalytic H₂ evolution

Yahao Zhao, Furong Ye, Changcun Han^*, Peng Liu, Wen Liu, Yizhong Huang^*, Xupeng Chen, Jiayi Tian^*

^*Corresponding author for this work

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

Abstract

AuCu/TiO₂ composite photocatalysts were prepared by anchoring AuCu nanoparticles (NPs) on TiO₂ nanosheets using a simple photoreduction method. Visible diffuse reflectance spectra indicated that the AuCu/TiO₂ significantly enhanced light absorption in the visible region. Through photoluminescence spectroscopy and steady-state surface photovoltage experiments, AuCu/TiO₂ exhibits an excellent photogenerated electron transfer rate. In addition, photoelectrochemical experiments showed that AuCu/TiO₂ had a high photogenerated charge separation efficiency. AuCu/TiO₂ (1.0 wt%) exhibited the best performance, under full spectrum, the hydrogen evolution rate is 33.94 mmol g⁻¹ h⁻¹, which is 1.59 times and 1.66 times higher than that of single metal Au/TiO₂ (1.0 wt%) (21.28 mmol g⁻¹ h⁻¹) and Cu/TiO₂ (1.0 wt%) (20.42 mmol g⁻¹ h⁻¹), respectively. The results showed that AuCu NPs greatly enhanced the photocatalytic performance of the composite photocatalysts.

Original language	English
Journal	Ceramics International
DOIs	https://doi.org/10.1016/j.ceramint.2024.11.077
Publication status	Accepted/In press - 2024
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2024

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Keywords

Anchoring
AuCu
Photocatalytic H evolution
Synergistic effect
TiO

Access to Document

10.1016/j.ceramint.2024.11.077

Cite this

@article{f6a7f8a030bf45aabb4d0c782144787e,

title = "Anchoring AuCu alloy nanoparticles on TiO2 nanosheets: Exploiting synergistic effects and directed electron transfer for enhanced photocatalytic H2 evolution",

abstract = "AuCu/TiO2 composite photocatalysts were prepared by anchoring AuCu nanoparticles (NPs) on TiO2 nanosheets using a simple photoreduction method. Visible diffuse reflectance spectra indicated that the AuCu/TiO2 significantly enhanced light absorption in the visible region. Through photoluminescence spectroscopy and steady-state surface photovoltage experiments, AuCu/TiO2 exhibits an excellent photogenerated electron transfer rate. In addition, photoelectrochemical experiments showed that AuCu/TiO2 had a high photogenerated charge separation efficiency. AuCu/TiO2 (1.0 wt%) exhibited the best performance, under full spectrum, the hydrogen evolution rate is 33.94 mmol g−1 h−1, which is 1.59 times and 1.66 times higher than that of single metal Au/TiO2 (1.0 wt%) (21.28 mmol g−1 h−1) and Cu/TiO2 (1.0 wt%) (20.42 mmol g−1 h−1), respectively. The results showed that AuCu NPs greatly enhanced the photocatalytic performance of the composite photocatalysts.",

keywords = "Anchoring, AuCu, Photocatalytic H evolution, Synergistic effect, TiO",

author = "Yahao Zhao and Furong Ye and Changcun Han and Peng Liu and Wen Liu and Yizhong Huang and Xupeng Chen and Jiayi Tian",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

doi = "10.1016/j.ceramint.2024.11.077",

language = "English",

journal = "Ceramics International",

issn = "0272-8842",

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TY - JOUR

T1 - Anchoring AuCu alloy nanoparticles on TiO2 nanosheets

T2 - Exploiting synergistic effects and directed electron transfer for enhanced photocatalytic H2 evolution

AU - Zhao, Yahao

AU - Ye, Furong

AU - Han, Changcun

AU - Liu, Peng

AU - Liu, Wen

AU - Huang, Yizhong

AU - Chen, Xupeng

AU - Tian, Jiayi

PY - 2024

Y1 - 2024

N2 - AuCu/TiO2 composite photocatalysts were prepared by anchoring AuCu nanoparticles (NPs) on TiO2 nanosheets using a simple photoreduction method. Visible diffuse reflectance spectra indicated that the AuCu/TiO2 significantly enhanced light absorption in the visible region. Through photoluminescence spectroscopy and steady-state surface photovoltage experiments, AuCu/TiO2 exhibits an excellent photogenerated electron transfer rate. In addition, photoelectrochemical experiments showed that AuCu/TiO2 had a high photogenerated charge separation efficiency. AuCu/TiO2 (1.0 wt%) exhibited the best performance, under full spectrum, the hydrogen evolution rate is 33.94 mmol g−1 h−1, which is 1.59 times and 1.66 times higher than that of single metal Au/TiO2 (1.0 wt%) (21.28 mmol g−1 h−1) and Cu/TiO2 (1.0 wt%) (20.42 mmol g−1 h−1), respectively. The results showed that AuCu NPs greatly enhanced the photocatalytic performance of the composite photocatalysts.

AB - AuCu/TiO2 composite photocatalysts were prepared by anchoring AuCu nanoparticles (NPs) on TiO2 nanosheets using a simple photoreduction method. Visible diffuse reflectance spectra indicated that the AuCu/TiO2 significantly enhanced light absorption in the visible region. Through photoluminescence spectroscopy and steady-state surface photovoltage experiments, AuCu/TiO2 exhibits an excellent photogenerated electron transfer rate. In addition, photoelectrochemical experiments showed that AuCu/TiO2 had a high photogenerated charge separation efficiency. AuCu/TiO2 (1.0 wt%) exhibited the best performance, under full spectrum, the hydrogen evolution rate is 33.94 mmol g−1 h−1, which is 1.59 times and 1.66 times higher than that of single metal Au/TiO2 (1.0 wt%) (21.28 mmol g−1 h−1) and Cu/TiO2 (1.0 wt%) (20.42 mmol g−1 h−1), respectively. The results showed that AuCu NPs greatly enhanced the photocatalytic performance of the composite photocatalysts.

KW - Anchoring

KW - AuCu

KW - Photocatalytic H evolution

KW - Synergistic effect

KW - TiO

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