Energy Technology, volume 11, issue 10

Tuning CH₄ productivity from visible light driven gas‐phase CO₂ photocatalytic reduction on doped g‐C₃N₄/TiO₂ heterojunctions

Leila Hammoud ¹

Clément Marchal ¹

C. Colbeau-Justin ²

Joumana Toufaily ³

Tayssir Hamieh ^{3, 4}

Valérie Caps ¹

Valérie Keller ¹

Hide authors affiliations Show authors affiliations: 4 affiliations

ICPEES Institut de Chimie et des Procédés pour l’Energie, l’Environnement et la Santé CNRS/Université de Strasbourg UMR 7515 (CNRS) 25 rue Becquerel 67087 Strasbourg Cedex France |

ICP Institut de Chimie Physique, CNRS UMR 8000 Université Paris-Saclay Bâtiment 349 91405 Orsay Cedex France |

MCEMA, Laboratory of Materials, Catalysis, Environment and Analytical Methods Lebanese University Hadath Campus Rafic Hariri Bayrouth Lebanon |

⁴

Faculty of Science and Engineering Universiteit Maastricht P.O. Box 616 6200 ED Maastricht The Netherlands |

Publication type: Journal Article

Publication date: 2023-08-28

Wiley

Journal: Energy Technology

Quartile SCImago

Quartile WOS

Impact factor: 3.8

ISSN: 21944288, 21944296

DOI: 10.1002/ente.202201363

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General Energy

Abstract

Herein, visible light‐driven gas‐phase photocatalytic CO₂ reduction into CH₄ is tuned by designing optimized three‐component Au/doped C₃N₄/TiO₂ composite photocatalysts. The key point strategy consists in the formation of high‐quality C₃N₄/TiO₂ heterojunction by associating low containing doped graphitic carbon nitride to commercially available TiO₂ UV‐100. Those heterojunctions result in both visible light sensitization and increased charge‐carrier separation. Further deposition of small Au nanoparticles (≈3 nm), quite exclusively onto TiO₂ surfaces, mainly acts as electron trapping/cocatalytic functions without excluding surface plasmonic effects. The resulting doped g‐C₃N₄ material exhibits enhanced visible light harvesting properties, especially in the case of C‐doping. In addition, it is assumed that B– and C–C₃N₄ doping, leading to a more or less lower conduction band position, is the impacting factor toward total CH₄ selectivity achievement. The (0.77 wt%)Au/(0.59 wt%)C–C₃N₄/TiO₂ composite photocatalyst, exhibiting the best compromise between the various impacting factors, leads to a continuous productivity rate of CH₄ of 8.5 μmol h⁻¹ g⁻¹ under visible light irradiation over at least 10 h. To the best of knowledge, this level of performance is unprecedented under continuous gas‐phase flowing CO₂ in the presence of water as reducing agent, without addition of any sacrificial agent.

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Hammoud L. et al. Tuning CH4 productivity from visible light driven gas‐phase CO2 photocatalytic reduction on doped g‐C3N4/TiO2 heterojunctions // Energy Technology. 2023. Vol. 11. No. 10.

GOST all authors (up to 50) Copy

Hammoud L., Marchal C., Colbeau-Justin C., Toufaily J., Hamieh T., Caps V., Keller V. Tuning CH4 productivity from visible light driven gas‐phase CO2 photocatalytic reduction on doped g‐C3N4/TiO2 heterojunctions // Energy Technology. 2023. Vol. 11. No. 10.

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RIS Copy

TY - JOUR

DO - 10.1002/ente.202201363

UR - https://doi.org/10.1002/ente.202201363

TI - Tuning CH4 productivity from visible light driven gas‐phase CO2 photocatalytic reduction on doped g‐C3N4/TiO2 heterojunctions

T2 - Energy Technology

AU - Hammoud, Leila

AU - Marchal, Clément

AU - Colbeau-Justin, C.

AU - Toufaily, Joumana

AU - Hamieh, Tayssir

AU - Caps, Valérie

AU - Keller, Valérie

PY - 2023

DA - 2023/08/28 00:00:00

PB - Wiley

IS - 10

VL - 11

SN - 2194-4288

SN - 2194-4296

ER -

BibTex

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BibTex Copy

@article{2023_Hammoud,

author = {Leila Hammoud and Clément Marchal and C. Colbeau-Justin and Joumana Toufaily and Tayssir Hamieh and Valérie Caps and Valérie Keller},

title = {Tuning CH4 productivity from visible light driven gas‐phase CO2 photocatalytic reduction on doped g‐C3N4/TiO2 heterojunctions},

journal = {Energy Technology},

year = {2023},

volume = {11},

publisher = {Wiley},

month = {aug},

url = {https://doi.org/10.1002/ente.202201363},

number = {10},

doi = {10.1002/ente.202201363}

}

Found error?

Publisher

Wiley

Journal

Energy Technology

Quartile SCImago

Quartile WOS

Impact factor

3.8

ISSN

21944288 (Print)
21944296 (Electronic)

Profiles

Keller, Valérie