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Article: The visible light degradation activity and the photocatalytic mechanism of tetra (4-carboxyphenyl) porphyrin sensitized TiO 2

TitleThe visible light degradation activity and the photocatalytic mechanism of tetra (4-carboxyphenyl) porphyrin sensitized TiO 2
Authors
Issue Date2014
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/matresbu
Citation
Materials Research Bulletin, 2014, v. 57, p. 311-319 How to Cite?
AbstractTetra(4-carboxyphenyl) porphyrin(TCPP) were chemically sensitized on TiO2 to act as visible light antenna and to modify the photoresponse properties of TiO2 particles, their properties of photo-generated holes and electrons were studied by transient absorption spectroscopes. The time-correlated single-photon counting (TCSPC) technique revealed that the S2–S0 fluorescence intensity of TCPP is enhanced noticeably by TiO2, and the lifetime prolonged. Adsorption and photo degradation of methylene blue (MB) over TCPP-TiO2 were systematically investigated. Moreover the overall picture of electronic relaxation dynamics for TCPP-TiO2 is presented, and the detailed short-time dynamics for visible-light induced catalytic mechanism was discussed. The development of the porphyrin-based photocatalyst provides an alternative approach in harnessing solar visible light and show promising prospect for the treatment of dye pollutants from wastewaters in future industrial application.
Persistent Identifierhttp://hdl.handle.net/10722/215100
ISSN
2015 Impact Factor: 2.435
2015 SCImago Journal Rankings: 0.753

 

DC FieldValueLanguage
dc.contributor.authorWang, H-
dc.contributor.authorZhou, D-
dc.contributor.authorWu, Z-
dc.contributor.authorWan, J-
dc.contributor.authorZheng, X-
dc.contributor.authorYu, L-
dc.contributor.authorPhillips, DL-
dc.date.accessioned2015-08-21T12:27:45Z-
dc.date.available2015-08-21T12:27:45Z-
dc.date.issued2014-
dc.identifier.citationMaterials Research Bulletin, 2014, v. 57, p. 311-319-
dc.identifier.issn0025-5408-
dc.identifier.urihttp://hdl.handle.net/10722/215100-
dc.description.abstractTetra(4-carboxyphenyl) porphyrin(TCPP) were chemically sensitized on TiO2 to act as visible light antenna and to modify the photoresponse properties of TiO2 particles, their properties of photo-generated holes and electrons were studied by transient absorption spectroscopes. The time-correlated single-photon counting (TCSPC) technique revealed that the S2–S0 fluorescence intensity of TCPP is enhanced noticeably by TiO2, and the lifetime prolonged. Adsorption and photo degradation of methylene blue (MB) over TCPP-TiO2 were systematically investigated. Moreover the overall picture of electronic relaxation dynamics for TCPP-TiO2 is presented, and the detailed short-time dynamics for visible-light induced catalytic mechanism was discussed. The development of the porphyrin-based photocatalyst provides an alternative approach in harnessing solar visible light and show promising prospect for the treatment of dye pollutants from wastewaters in future industrial application.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/matresbu-
dc.relation.ispartofMaterials Research Bulletin-
dc.titleThe visible light degradation activity and the photocatalytic mechanism of tetra (4-carboxyphenyl) porphyrin sensitized TiO 2-
dc.typeArticle-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770-
dc.identifier.doi10.1016/j.materresbull.2014.06.017-
dc.identifier.hkuros246414-
dc.identifier.volume57-
dc.identifier.spage311-
dc.identifier.epage319-
dc.publisher.placeUnited Kingdom-

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