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Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst

Fe-promoted titanium dioxide (TiO2) nanoparticles dispersed in Montmorillonite (MMT) clay for dynamic photocatalytic carbon dioxide (CO2) reduction to carbon monoxide (CO) and hydrocarbons in a monolith photo-reactor has been investigated. MMT-clay supported Fe/TiO2 nanocomposites were prepared by a...

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Main Authors: Tahir, B., Tahir, M., Amin, N. A. S.
Format: Article
Published: Italian Association of Chemical Engineering - AIDIC 2017
Subjects:
TC Hydraulic engineering. Ocean engineering
Online Access:http://eprints.utm.my/id/eprint/75520/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019456883&doi=10.3303%2fCET1756186&partnerID=40&md5=3428eab36ce555a9e54b085c7a715bb5
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spelling my.utm.755202018-03-29T00:47:49Z http://eprints.utm.my/id/eprint/75520/ Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst Tahir, B. Tahir, M. Amin, N. A. S. TC Hydraulic engineering. Ocean engineering Fe-promoted titanium dioxide (TiO2) nanoparticles dispersed in Montmorillonite (MMT) clay for dynamic photocatalytic carbon dioxide (CO2) reduction to carbon monoxide (CO) and hydrocarbons in a monolith photo-reactor has been investigated. MMT-clay supported Fe/TiO2 nanocomposites were prepared by a controlled and direct sol-gel method and were dip-coated over the monolith micro-channels. The performance of Fe-loaded MMT/TiO2 nano-catalyst for CO2 reduction by H2 toward CO evolution was evaluated in a continuous operation of photo-reactor under UV-light irradiation. The photo-Activity of TiO2 catalyst dispersed in MMT and loaded with Fe was significantly enhanced. The maximum yield of CO over 3 wt% Fe - 10 wt% MMT-loaded TiO2 catalyst reached to 289.30 μmole g-cat-1 h-1 at selectivity 99.61 %, is considerably higher than the amount produced over the MMT/TiO2 (25.95 μmole g-cat-1 h-1) and the pure TiO2 (8.52 μmole g-cat-1 h-1) catalyst. The other products observed with adequate amounts were CH4 and C2H6. These results revealed significantly enhanced photo-Activity of TiO2 loaded with Fe and dispersed over MMT. The enhanced CO evolution was evidently due to larger illuminated active surface area, higher adsorption process inside the monolith micro-channels and hindered charges recombination rate by Fe. This development has confirmed higher photoactivity of Fe-MMT/TiO2 photo-catalyst for continuous CO2 photo-reduction to cleaner fuels. Italian Association of Chemical Engineering - AIDIC 2017 Article PeerReviewed Tahir, B. and Tahir, M. and Amin, N. A. S. (2017) Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst. Chemical Engineering Transactions, 56 . pp. 1111-1116. ISSN 2283-9216 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019456883&doi=10.3303%2fCET1756186&partnerID=40&md5=3428eab36ce555a9e54b085c7a715bb5
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/
topic TC Hydraulic engineering. Ocean engineering
spellingShingle TC Hydraulic engineering. Ocean engineering
Tahir, B.
Tahir, M.
Amin, N. A. S.
Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
description Fe-promoted titanium dioxide (TiO2) nanoparticles dispersed in Montmorillonite (MMT) clay for dynamic photocatalytic carbon dioxide (CO2) reduction to carbon monoxide (CO) and hydrocarbons in a monolith photo-reactor has been investigated. MMT-clay supported Fe/TiO2 nanocomposites were prepared by a controlled and direct sol-gel method and were dip-coated over the monolith micro-channels. The performance of Fe-loaded MMT/TiO2 nano-catalyst for CO2 reduction by H2 toward CO evolution was evaluated in a continuous operation of photo-reactor under UV-light irradiation. The photo-Activity of TiO2 catalyst dispersed in MMT and loaded with Fe was significantly enhanced. The maximum yield of CO over 3 wt% Fe - 10 wt% MMT-loaded TiO2 catalyst reached to 289.30 μmole g-cat-1 h-1 at selectivity 99.61 %, is considerably higher than the amount produced over the MMT/TiO2 (25.95 μmole g-cat-1 h-1) and the pure TiO2 (8.52 μmole g-cat-1 h-1) catalyst. The other products observed with adequate amounts were CH4 and C2H6. These results revealed significantly enhanced photo-Activity of TiO2 loaded with Fe and dispersed over MMT. The enhanced CO evolution was evidently due to larger illuminated active surface area, higher adsorption process inside the monolith micro-channels and hindered charges recombination rate by Fe. This development has confirmed higher photoactivity of Fe-MMT/TiO2 photo-catalyst for continuous CO2 photo-reduction to cleaner fuels.
format Article
author Tahir, B.
Tahir, M.
Amin, N. A. S.
author_facet Tahir, B.
Tahir, M.
Amin, N. A. S.
author_sort Tahir, B.
title Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
title_short Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
title_full Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
title_fullStr Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
title_full_unstemmed Photocatalytic CO2 reduction to CO over Fe-loaded TiO2/Nanoclay photocatalyst
title_sort photocatalytic co2 reduction to co over fe-loaded tio2/nanoclay photocatalyst
publisher Italian Association of Chemical Engineering - AIDIC
publishDate 2017
url http://eprints.utm.my/id/eprint/75520/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019456883&doi=10.3303%2fCET1756186&partnerID=40&md5=3428eab36ce555a9e54b085c7a715bb5
_version_ 1643657086414880768
score 13.211869

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