Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂

Ahmadi, Maryam; Alavi, Seyed Mehdi; Asgharinezhad, Ali Akbar; Haghighatzadeh, Azadeh; Larimi, Mary

doi:10.1016/j.cattod.2025.115674

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Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂

Maryam Ahmadi, Seyed Mehdi Alavi, Ali Akbar Asgharinezhad, Azadeh Haghighatzadeh, Mary Larimi

Catalysis Today, Volume: 466, Start page: 115674

Swansea University Author: Mary Larimi

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DOI (Published version): 10.1016/j.cattod.2025.115674

Abstract

This study investigates the photocatalytic reduction of CO2 using water vapor in a top-irradiation batch reactor, with M-Bi2MoO6/TiO2 serving as the photocatalyst. Various M-Bi2MoO6/TiO2 samples with different co-catalysts (M: Ni, Ce, Co, Mo, Cu) were fabricated through a deposition-ultrasound-assis...

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Published in:	Catalysis Today
ISSN:	0920-5861 1873-4308
Published:	Elsevier BV 2026
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa71187

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spelling	2026-01-05T10:39:07.8641487 v2 71187 2026-01-05 Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂ db028d01b9d62d39518f147f6bb08fa5 0000-0001-5566-171X Mary Larimi Mary Larimi true false 2026-01-05 EAAS This study investigates the photocatalytic reduction of CO2 using water vapor in a top-irradiation batch reactor, with M-Bi2MoO6/TiO2 serving as the photocatalyst. Various M-Bi2MoO6/TiO2 samples with different co-catalysts (M: Ni, Ce, Co, Mo, Cu) were fabricated through a deposition-ultrasound-assisted approach. The prepared samples underwent examination using UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FESEM), N2 adsorption-desorption isotherms, Photoluminescence (PL) and Raman spectroscopy. Methane was identified as the predominant reaction product, and the introduction of co-catalysts through sono-deposition significantly improved the photocatalytic efficiency. The catalysts with various co-catalysts showed different performances in CO2 reduction. Additionally, the optical properties of the composite samples changed with the deposition of different co-catalysts on the BT support. Compared to pristine TiO2, the co-catalyst-loaded composites exhibited superior CO2 reduction performance. Among them, the Ni-BT sample had the highest methane yield, attributed to the even distribution of Ni nanoparticles, better visible-light absorption, and more effective charge separation and transfer. Journal Article Catalysis Today 466 115674 Elsevier BV 0920-5861 1873-4308 Bismuth molybdate; Co-catalyst; TiO2; Photocatalyst; CO2reduction; Sono-Dispersion 15 3 2026 2026-03-15 10.1016/j.cattod.2025.115674 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University SU Library paid the OA fee (TA Institutional Deal) Swansea University 2026-01-05T10:39:07.8641487 2026-01-05T10:33:19.3347221 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Maryam Ahmadi 1 Seyed Mehdi Alavi 2 Ali Akbar Asgharinezhad 3 Azadeh Haghighatzadeh 4 Mary Larimi 0000-0001-5566-171X 5 71187__35895__2f61f1d31df244b2b665c8b18205222f.pdf 71187.VOR.pdf 2026-01-05T10:37:09.4646026 Output 13933753 application/pdf Version of Record true © 2025 The Author(s). This is an open access article distributed under the terms of the Creative Commons CC-BY license. true eng http://creativecommons.org/licenses/by/4.0/
title	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
spellingShingle	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂ Mary Larimi
title_short	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
title_full	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
title_fullStr	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
title_full_unstemmed	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
title_sort	Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂
author_id_str_mv	db028d01b9d62d39518f147f6bb08fa5
author_id_fullname_str_mv	db028d01b9d62d39518f147f6bb08fa5_***_Mary Larimi
author	Mary Larimi
author2	Maryam Ahmadi Seyed Mehdi Alavi Ali Akbar Asgharinezhad Azadeh Haghighatzadeh Mary Larimi
format	Journal article
container_title	Catalysis Today
container_volume	466
container_start_page	115674
publishDate	2026
institution	Swansea University
issn	0920-5861 1873-4308
doi_str_mv	10.1016/j.cattod.2025.115674
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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department_str	School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
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description	This study investigates the photocatalytic reduction of CO2 using water vapor in a top-irradiation batch reactor, with M-Bi2MoO6/TiO2 serving as the photocatalyst. Various M-Bi2MoO6/TiO2 samples with different co-catalysts (M: Ni, Ce, Co, Mo, Cu) were fabricated through a deposition-ultrasound-assisted approach. The prepared samples underwent examination using UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), X-ray diffraction (XRD), Field-emission scanning electron microscopy (FESEM), N2 adsorption-desorption isotherms, Photoluminescence (PL) and Raman spectroscopy. Methane was identified as the predominant reaction product, and the introduction of co-catalysts through sono-deposition significantly improved the photocatalytic efficiency. The catalysts with various co-catalysts showed different performances in CO2 reduction. Additionally, the optical properties of the composite samples changed with the deposition of different co-catalysts on the BT support. Compared to pristine TiO2, the co-catalyst-loaded composites exhibited superior CO2 reduction performance. Among them, the Ni-BT sample had the highest methane yield, attributed to the even distribution of Ni nanoparticles, better visible-light absorption, and more effective charge separation and transfer.
published_date	2026-03-15T05:33:27Z
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Uniform sono-dispersed co-catalysts unlock superior CO₂ photoreduction on Bi₂MoO₆/TiO₂

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