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Article: Visible-light-assisted photocatalytic degradation of gaseous formaldehyde by parallel-plate reactor coated with Cr ion-implanted TiO2 thin film

TitleVisible-light-assisted photocatalytic degradation of gaseous formaldehyde by parallel-plate reactor coated with Cr ion-implanted TiO2 thin film
Authors
KeywordsChromium ion implantation
Photocatalytic
Titanium dioxide
Visible light
Issue Date2007
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/solmat
Citation
Solar Energy Materials And Solar Cells, 2007, v. 91 n. 1, p. 54-61 How to Cite?
AbstractSol-gel nano titanium dioxide (TiO2) thin film can be activated by the ultraviolet (UV) radiation available in sunlight to perform solar photocatalysis. The useful spectral range can be extended from UV to visible light by implantation of metal ion into the TiO2 lattice. As a result, the solar visible light can be utilized more efficiently to enhance the solar photocatalysis. In this study, visible-light-assisted photocatalytic glass reactors were built by parallel borosilicate glass plates coated on the upper surfaces with sol-gel TiO2 thin films implanted with chromium (Cr) ion. The properties of the Cr/TiO2 thin films were fully characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermal gravity (TG) analysis, scanning-electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. In the performance tests, a metal halide lamp was used as an external light source to resemble the solar visible spectral radiation. The performance of a Cr/TiO2 photoreactor was measured in terms of its photocatalytic degradation of gaseous formaldehyde in a single pass of contaminated air flowing through the photoreactor. The experimental results demonstrated the promise of using light-transmitting glass substrate to allow transmission and distribution of light from an external source to achieve solar photocatalysis. In the design of a parallel-plate photoreactor, it is important to properly control the Cr ion loading so that each Cr/TiO2-coated glass plate absorbs a portion of the incident light for its photocatalytic activation and allows light transmission available for the remaining coated plates. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75869
ISSN
2015 Impact Factor: 4.732
2015 SCImago Journal Rankings: 1.996
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLam, RCWen_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.contributor.authorVrijmoed, LLPen_HK
dc.contributor.authorYam, WCen_HK
dc.contributor.authorNg, SPen_HK
dc.date.accessioned2010-09-06T07:15:22Z-
dc.date.available2010-09-06T07:15:22Z-
dc.date.issued2007en_HK
dc.identifier.citationSolar Energy Materials And Solar Cells, 2007, v. 91 n. 1, p. 54-61en_HK
dc.identifier.issn0927-0248en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75869-
dc.description.abstractSol-gel nano titanium dioxide (TiO2) thin film can be activated by the ultraviolet (UV) radiation available in sunlight to perform solar photocatalysis. The useful spectral range can be extended from UV to visible light by implantation of metal ion into the TiO2 lattice. As a result, the solar visible light can be utilized more efficiently to enhance the solar photocatalysis. In this study, visible-light-assisted photocatalytic glass reactors were built by parallel borosilicate glass plates coated on the upper surfaces with sol-gel TiO2 thin films implanted with chromium (Cr) ion. The properties of the Cr/TiO2 thin films were fully characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermal gravity (TG) analysis, scanning-electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. In the performance tests, a metal halide lamp was used as an external light source to resemble the solar visible spectral radiation. The performance of a Cr/TiO2 photoreactor was measured in terms of its photocatalytic degradation of gaseous formaldehyde in a single pass of contaminated air flowing through the photoreactor. The experimental results demonstrated the promise of using light-transmitting glass substrate to allow transmission and distribution of light from an external source to achieve solar photocatalysis. In the design of a parallel-plate photoreactor, it is important to properly control the Cr ion loading so that each Cr/TiO2-coated glass plate absorbs a portion of the incident light for its photocatalytic activation and allows light transmission available for the remaining coated plates. © 2006 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/solmaten_HK
dc.relation.ispartofSolar Energy Materials and Solar Cellsen_HK
dc.rightsSolar Energy Materials & Solar Cells. Copyright © Elsevier BV.en_HK
dc.subjectChromium ion implantationen_HK
dc.subjectPhotocatalyticen_HK
dc.subjectTitanium dioxideen_HK
dc.subjectVisible lighten_HK
dc.titleVisible-light-assisted photocatalytic degradation of gaseous formaldehyde by parallel-plate reactor coated with Cr ion-implanted TiO2 thin filmen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0927-0248&volume=91&spage=54&epage=61&date=2006&atitle=Visible-light-assisted+photocatalytic+degradation+of+gaseous+formaldehyde+by+parallel-plate+reactor+coated+with+Cr+ion-implanted+TiO2+thin+filmen_HK
dc.identifier.emailLeung, MKH:en_HK
dc.identifier.emailLeung, DYC: ycleung@hku.hken_HK
dc.identifier.emailYam, WC: wcyam@hkucc.hku.hken_HK
dc.identifier.authorityLeung, MKH=rp00148en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.identifier.authorityYam, WC=rp00313en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.solmat.2006.07.004en_HK
dc.identifier.scopuseid_2-s2.0-33750056370en_HK
dc.identifier.hkuros132231en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33750056370&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume91en_HK
dc.identifier.issue1en_HK
dc.identifier.spage54en_HK
dc.identifier.epage61en_HK
dc.identifier.isiWOS:000242282400008-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLam, RCW=14048708900en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK
dc.identifier.scopusauthoridVrijmoed, LLP=7003337180en_HK
dc.identifier.scopusauthoridYam, WC=7004281720en_HK
dc.identifier.scopusauthoridNg, SP=8862966400en_HK

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