Formal quantum efficiencies for the photocatalytic reduction of CO2 in a gas phase batch reactor

Cortes, Maria Ana L. R. M.; Hamilton, J. W. J.; Sharma, P. K.; Brown, A.; Nolan, Michael; Gray, K. A.; Byrne, J. Anthony

Formal quantum efficiencies for the photocatalytic reduction of CO2 in a gas phase batch reactor

dc.check.date	2020-10-23
dc.check.info	Access to this article is restricted until 24 months after publication by request of the publisher.	en
dc.contributor.author	Cortes, Maria Ana L. R. M.
dc.contributor.author	Hamilton, J. W. J.
dc.contributor.author	Sharma, P. K.
dc.contributor.author	Brown, A.
dc.contributor.author	Nolan, Michael
dc.contributor.author	Gray, K. A.
dc.contributor.author	Byrne, J. Anthony
dc.contributor.funder	National Science Foundation	en
dc.contributor.funder	Science Foundation Ireland	en
dc.contributor.funder	Department for Education	en
dc.contributor.funder	British Council	en
dc.date.accessioned	2018-11-27T09:58:17Z
dc.date.available	2018-11-27T09:58:17Z
dc.date.issued	2018-10-23
dc.date.updated	2018-11-27T09:45:38Z
dc.description.abstract	The photocatalytic reduction of CO2 to fuels, or useful products, is an area of active research. In this work, nanoengineering and surface modification of titania were investigated as approaches for improving the CO2 reduction efficiency in a fixed-bed gas phase batch photoreactor under UV–vis irradiation. Titania nanotubes were prepared by a hydrothermal method, and TiO2 (P25) was surface modified with copper clusters. Unmodified TiO2 (P25) was used as the bench-mark comparison. The titania nanotubes and Cu-TiO2 materials showed higher efficiency for the photocatalytic reduction of CO2 to yield CH4 as compared to P25. Carbon monoxide yields were similar for all photocatalysts tested. The photocatalytic reduction of CO2 was observed on all photocatalyst tested, with the nanotubes proving to be the most efficient for the production of CH4. The product yields per mass of catalyst observed in this work are similar to those reported in the literature (with similar reactor parameters) but the calculated formal quantum efficiencies for CO2 reduction are very low (4.41 × 10−5 to 5.95 × 10-4).	en
dc.description.sponsorship	National Science Foundation (US-Ireland R&D Collaborative Partnership Program NSF (CBET-1438721)); Department for Education (USI065); British Council (STREAM-MENA Institutional Links Scheme (Grant Number 278072873))	en
dc.description.status	Peer reviewed	en
dc.description.version	Accepted Version	en
dc.format.mimetype	application/pdf	en
dc.identifier.citation	Cortes, M. A. L. R. M., Hamilton, J. W. J., Sharma, P. K., Brown, A., Nolan, M., Gray, K. A. and Byrne, J. A. (2018) 'Formal quantum efficiencies for the photocatalytic reduction of CO2 in a gas phase batch reactor', Catalysis Today. doi:10.1016/j.cattod.2018.10.047	en
dc.identifier.doi	10.1016/j.cattod.2018.10.047
dc.identifier.issn	0920-5861
dc.identifier.journaltitle	Catalysis Today	en
dc.identifier.uri	https://hdl.handle.net/10468/7148
dc.language.iso	en	en
dc.publisher	Elsevier B.V.	en
dc.relation.project	info:eu-repo/grantAgreement/SFI/SFI US Ireland R&D Partnership/14/US/E2915/IE/SusChEM: Using theory-driven design to tailor novel nanocomposite oxides for solar fuel production/	en
dc.rights	© 2018, Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.	en
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/	en
dc.subject	CO2 photoreduction	en
dc.subject	Titanium dioxide	en
dc.subject	Mechanism	en
dc.subject	Quantum efficiency	en
dc.title	Formal quantum efficiencies for the photocatalytic reduction of CO2 in a gas phase batch reactor	en
dc.type	Article (peer-reviewed)	en