CeO2/3D g-C3N4 heterojunction deposited with Pt cocatalyst for enhanced photocatalytic CO2 reduction

Xiaoxue Zhao; Jingru Guan; Jinze Li; Xin Li; Huiqin Wang; Pengwei Huo; Yongsheng Yan

doi:10.1016/j.apsusc.2020.147891

CeO₂/3D g-C₃N₄ heterojunction deposited with Pt cocatalyst for enhanced photocatalytic CO₂ reduction

Xiaoxue Zhao, Jingru Guan, Jinze Li, Xin Li, Huiqin Wang, Pengwei Huo, Yongsheng Yan

Jiangsu University

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

182 Scopus citations

Abstract

The conversion of CO₂ into high value-added carbon-based compounds through photocatalytic reduction technology is considered as one of the more promising strategies to solve the greenhouse effect. And construction of heterojunction photocatalysts can promote the separation of photoelectron-hole pairs, so as to achieve higher activity of photocatalytic CO₂ reduction. Hence, Pt@CeO₂/3DCN heterojunction are prepared by calcination method and photoreduction technology. The photocatalytic results revealed that Pt@CeO₂/3DCN show better photocatalytic activity for reducing CO₂ into CO and CH₄, compared with 3DCN. Especially, Pt@45CeO₂/3DCN shows the maximum photocatalytic activity of 4.69 and 3.03 μmol·h⁻¹·g⁻¹ for CO and CH₄ under UV light irradiation, respectively, and the reduction activity did not decrease significantly after five cycles. The enhanced photoreduction of CO₂ performance can be ascribed to the synergistic effects of the oxygen vacancies in CeO₂ for CO₂ activation and heterojunction for electron separation. Besides, Pt nanoparticles (NPs) on CeO₂/3DCN can further promote the transfer of electrons, resulting in higher photocatalytic activity.

Original language	English
Article number	147891
Journal	Applied Surface Science
Volume	537
DOIs	https://doi.org/10.1016/j.apsusc.2020.147891
State	Published - 30 Jan 2021
Externally published	Yes

Keywords

3D g-CN
CeO
CO photoreduction
Cocatalyst
Heterojunction

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10.1016/j.apsusc.2020.147891

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@article{3d821d3b96ae42d7aa67a7e2b82b40c6,

title = "CeO2/3D g-C3N4 heterojunction deposited with Pt cocatalyst for enhanced photocatalytic CO2 reduction",

abstract = "The conversion of CO2 into high value-added carbon-based compounds through photocatalytic reduction technology is considered as one of the more promising strategies to solve the greenhouse effect. And construction of heterojunction photocatalysts can promote the separation of photoelectron-hole pairs, so as to achieve higher activity of photocatalytic CO2 reduction. Hence, Pt@CeO2/3DCN heterojunction are prepared by calcination method and photoreduction technology. The photocatalytic results revealed that Pt@CeO2/3DCN show better photocatalytic activity for reducing CO2 into CO and CH4, compared with 3DCN. Especially, Pt@45CeO2/3DCN shows the maximum photocatalytic activity of 4.69 and 3.03 μmol·h−1·g−1 for CO and CH4 under UV light irradiation, respectively, and the reduction activity did not decrease significantly after five cycles. The enhanced photoreduction of CO2 performance can be ascribed to the synergistic effects of the oxygen vacancies in CeO2 for CO2 activation and heterojunction for electron separation. Besides, Pt nanoparticles (NPs) on CeO2/3DCN can further promote the transfer of electrons, resulting in higher photocatalytic activity.",

keywords = "3D g-CN, CeO, CO photoreduction, Cocatalyst, Heterojunction",

author = "Xiaoxue Zhao and Jingru Guan and Jinze Li and Xin Li and Huiqin Wang and Pengwei Huo and Yongsheng Yan",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2021",

month = jan,

day = "30",

doi = "10.1016/j.apsusc.2020.147891",

language = "英语",

volume = "537",

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TY - JOUR

T1 - CeO2/3D g-C3N4 heterojunction deposited with Pt cocatalyst for enhanced photocatalytic CO2 reduction

AU - Zhao, Xiaoxue

AU - Guan, Jingru

AU - Li, Jinze

AU - Li, Xin

AU - Wang, Huiqin

AU - Huo, Pengwei

AU - Yan, Yongsheng

PY - 2021/1/30

Y1 - 2021/1/30

N2 - The conversion of CO2 into high value-added carbon-based compounds through photocatalytic reduction technology is considered as one of the more promising strategies to solve the greenhouse effect. And construction of heterojunction photocatalysts can promote the separation of photoelectron-hole pairs, so as to achieve higher activity of photocatalytic CO2 reduction. Hence, Pt@CeO2/3DCN heterojunction are prepared by calcination method and photoreduction technology. The photocatalytic results revealed that Pt@CeO2/3DCN show better photocatalytic activity for reducing CO2 into CO and CH4, compared with 3DCN. Especially, Pt@45CeO2/3DCN shows the maximum photocatalytic activity of 4.69 and 3.03 μmol·h−1·g−1 for CO and CH4 under UV light irradiation, respectively, and the reduction activity did not decrease significantly after five cycles. The enhanced photoreduction of CO2 performance can be ascribed to the synergistic effects of the oxygen vacancies in CeO2 for CO2 activation and heterojunction for electron separation. Besides, Pt nanoparticles (NPs) on CeO2/3DCN can further promote the transfer of electrons, resulting in higher photocatalytic activity.

AB - The conversion of CO2 into high value-added carbon-based compounds through photocatalytic reduction technology is considered as one of the more promising strategies to solve the greenhouse effect. And construction of heterojunction photocatalysts can promote the separation of photoelectron-hole pairs, so as to achieve higher activity of photocatalytic CO2 reduction. Hence, Pt@CeO2/3DCN heterojunction are prepared by calcination method and photoreduction technology. The photocatalytic results revealed that Pt@CeO2/3DCN show better photocatalytic activity for reducing CO2 into CO and CH4, compared with 3DCN. Especially, Pt@45CeO2/3DCN shows the maximum photocatalytic activity of 4.69 and 3.03 μmol·h−1·g−1 for CO and CH4 under UV light irradiation, respectively, and the reduction activity did not decrease significantly after five cycles. The enhanced photoreduction of CO2 performance can be ascribed to the synergistic effects of the oxygen vacancies in CeO2 for CO2 activation and heterojunction for electron separation. Besides, Pt nanoparticles (NPs) on CeO2/3DCN can further promote the transfer of electrons, resulting in higher photocatalytic activity.

KW - 3D g-CN

KW - CeO

KW - CO photoreduction

KW - Cocatalyst

KW - Heterojunction

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DO - 10.1016/j.apsusc.2020.147891

M3 - 文章

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SN - 0169-4332

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JO - Applied Surface Science

JF - Applied Surface Science

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ER -

CeO₂/3D g-C₃N₄ heterojunction deposited with Pt cocatalyst for enhanced photocatalytic CO₂ reduction

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Keywords

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