Staff View: Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst

Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst

In this study, a novel externally reflected photoreactor was compared with a solar photoreactor for photocatalytic CO2 conversion in liquid phase using proton-rich functionalized carbon nitride (f-C3N4) modified ZnV 2O6 nanosheets. Effects of operating parameters such as reaction medium and catalyst...

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Main Authors:	Abdullah Bafaqeer, Abdullah Bafaqeer, Muhammad Tahir, Muhammad Tahir, Saidina Amin, Nor Aishah, Al-Bastaki, Nader, Altowayti, Wahid Ali Hamood, Thabit, Hammam Abdurabu
Format:	Article
Language:	English
Published:	Elsevier B.V. 2023
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/107019/1/NorAishahSaidinaAmin2023_PerformanceAnalysisOfExternallyReflectedPhotoreactor.pdf http://eprints.utm.my/107019/ http://dx.doi.org/10.1016/j.eti.2023.103032
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spelling	my.utm.1070192024-08-14T04:41:53Z http://eprints.utm.my/107019/ Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst Abdullah Bafaqeer, Abdullah Bafaqeer Muhammad Tahir, Muhammad Tahir Saidina Amin, Nor Aishah Al-Bastaki, Nader Altowayti, Wahid Ali Hamood Thabit, Hammam Abdurabu TP Chemical technology In this study, a novel externally reflected photoreactor was compared with a solar photoreactor for photocatalytic CO2 conversion in liquid phase using proton-rich functionalized carbon nitride (f-C3N4) modified ZnV 2O6 nanosheets. Effects of operating parameters such as reaction medium and catalyst loading were investigated to maximize yield rates. The performance of photoreactor for CO2 photoconversion was higher in the presence of NaOH solution as a reducing agent than H2O and KHCO3 solution. ZnV2O6 modified with f-C3N4 (1:1) ratio registered the highest CH3OH yield. In an externally reflected photoreactor, the maximum yield rate of CH3OH over ZnV2O6/f-C3N4 (1:1) nanosheets was 4665.6 µmole g-cat -1, 1.25 folds higher than solar photoreactor (3742.1 µmole g-cat-1). The externally reflected photoreactor was found very efficient for photocatalytic CO2 conversion due to its higher light harvesting efficiency compared to the solar photoreactor. The increased yield rates in externally reflected photoreactor were because the reflector provides greater photon flux for dynamic CO2 reduction. Possible reaction mechanisms for photoconversion of CO2 over ZnV2O6/f-C3N4 S-scheme photocatalyst were proposed in order to understand the function of the reflector and the movement of electrons and holes. Elsevier B.V. 2023 Article PeerReviewed application/pdf en http://eprints.utm.my/107019/1/NorAishahSaidinaAmin2023_PerformanceAnalysisOfExternallyReflectedPhotoreactor.pdf Abdullah Bafaqeer, Abdullah Bafaqeer and Muhammad Tahir, Muhammad Tahir and Saidina Amin, Nor Aishah and Al-Bastaki, Nader and Altowayti, Wahid Ali Hamood and Thabit, Hammam Abdurabu (2023) Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst. Environmental Technology and Innovation, 30 (NA). pp. 1-13. ISSN 2352-1864 http://dx.doi.org/10.1016/j.eti.2023.103032 DOI : 10.1016/j.eti.2023.103032
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Abdullah Bafaqeer, Abdullah Bafaqeer Muhammad Tahir, Muhammad Tahir Saidina Amin, Nor Aishah Al-Bastaki, Nader Altowayti, Wahid Ali Hamood Thabit, Hammam Abdurabu Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
description	In this study, a novel externally reflected photoreactor was compared with a solar photoreactor for photocatalytic CO2 conversion in liquid phase using proton-rich functionalized carbon nitride (f-C3N4) modified ZnV 2O6 nanosheets. Effects of operating parameters such as reaction medium and catalyst loading were investigated to maximize yield rates. The performance of photoreactor for CO2 photoconversion was higher in the presence of NaOH solution as a reducing agent than H2O and KHCO3 solution. ZnV2O6 modified with f-C3N4 (1:1) ratio registered the highest CH3OH yield. In an externally reflected photoreactor, the maximum yield rate of CH3OH over ZnV2O6/f-C3N4 (1:1) nanosheets was 4665.6 µmole g-cat -1, 1.25 folds higher than solar photoreactor (3742.1 µmole g-cat-1). The externally reflected photoreactor was found very efficient for photocatalytic CO2 conversion due to its higher light harvesting efficiency compared to the solar photoreactor. The increased yield rates in externally reflected photoreactor were because the reflector provides greater photon flux for dynamic CO2 reduction. Possible reaction mechanisms for photoconversion of CO2 over ZnV2O6/f-C3N4 S-scheme photocatalyst were proposed in order to understand the function of the reflector and the movement of electrons and holes.
format	Article
author	Abdullah Bafaqeer, Abdullah Bafaqeer Muhammad Tahir, Muhammad Tahir Saidina Amin, Nor Aishah Al-Bastaki, Nader Altowayti, Wahid Ali Hamood Thabit, Hammam Abdurabu
author_facet	Abdullah Bafaqeer, Abdullah Bafaqeer Muhammad Tahir, Muhammad Tahir Saidina Amin, Nor Aishah Al-Bastaki, Nader Altowayti, Wahid Ali Hamood Thabit, Hammam Abdurabu
author_sort	Abdullah Bafaqeer, Abdullah Bafaqeer
title	Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
title_short	Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
title_full	Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
title_fullStr	Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
title_full_unstemmed	Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst
title_sort	performance analysis of externally reflected photoreactor for co2 conversion to methanol using f-c3n4/znv2o6 s-scheme photocatalyst
publisher	Elsevier B.V.
publishDate	2023
url	http://eprints.utm.my/107019/1/NorAishahSaidinaAmin2023_PerformanceAnalysisOfExternallyReflectedPhotoreactor.pdf http://eprints.utm.my/107019/ http://dx.doi.org/10.1016/j.eti.2023.103032
_version_	1809136614421561344
score	13.211869

Performance analysis of externally reflected photoreactor for CO2 conversion to methanol using f-C3N4/ZnV2O6 S-scheme photocatalyst

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