Show simple item record

dc.contributor.authorWang, Haiming
dc.contributor.authorYou, Changfu
dc.contributor.authorTan, Zhongchao
dc.date.accessioned2018-10-26 17:13:53 (GMT)
dc.date.available2018-10-26 17:13:53 (GMT)
dc.date.issued2018-10-15
dc.identifier.urihttps://dx.doi.org/10.1016/j.cej.2018.05.128
dc.identifier.urihttp://hdl.handle.net/10012/14074
dc.descriptionThe final publication is available at Elsevier via https://dx.doi.org/10.1016/j.cej.2018.05.128 © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.description.abstractThe effects of Na2CO3 on the photocatalytic oxidation (PCO) of SO2 with UV irradiated TiO2 (P25) were studied using a fixed bed reactor. Na2CO3 was loaded onto P25 using a wet coating method. The PCO efficiency for SO2 with P25 was enhanced by 1.6 and 10.6 times using 0.05 M and 0.2 M Na2CO3 modified P25, respectively. The enhancement of the photocatalytic activity of P25 by Na2CO3 was observed only with the presence of water vapor. Low temperature (113 K) electron spinning resonance (ESR) analysis showed that Na2CO3 promoted the photoinduced electron-hole separation by trapping valance band holes and forming carbonate radicals (CO3−). The ESR spin trapping analyses showed a remarkable increase in the intensity of [DMPO-OH] adducts with the addition of Na2CO3. This increase phenomena indicates that more reactive species were formed on the P25 surface. The deposited Na2CO3 inhibited the recombination of electron-hole pairs and promoted the generation of hydroxyl radicals (OH), most likely through the photo-reduction of O2 adsorbed by the conduction band electrons. The generated •OH radicals reacted with SO2 rapidly and improved the PCO effectiveness of P25.en
dc.description.sponsorshipNational Key Research and Development Program of China ["2017YFB0603903"]en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectTitanium dioxideen
dc.subjectElectron spinning resonanceen
dc.subjectPhotocatalytic oxidationen
dc.subjectSodium carbonateen
dc.subjectSulfur dioxideen
dc.titleEnhanced photocatalytic oxidation of SO2 on TiO2 surface by Na2CO3 modificationen
dc.typeArticleen
dcterms.bibliographicCitationWang, H., You, C., & Tan, Z. (2018). Enhanced photocatalytic oxidation of SO2 on TiO2 surface by Na2CO3 modification. Chemical Engineering Journal, 350, 89–99. doi:10.1016/j.cej.2018.05.128en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen
uws.typeOfResourceTexten
uws.typeOfResourceTexten
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International

UWSpace

University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages