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Singlet oxygen photogeneration at surface modified titanium dioxide

2006
journal article
article
10.1021/ja065970m
Journal
Journal of the American Chemical Society
Author
Kyzioł Agnieszka

Krakowska Elżbieta

Stochel Grażyna

Macyk Wojciech
Volume
128
Number
49
Pages
15574-15575
ISSN
0002-7863
eISSN
1520-5126
Remarks

Na publikacji autorka Kyzioł Agnieszka podpisana jako Jańczyk Agnieszka.

Language
English
Journal language
English
Abstract in English

Substitution of surface −OH groups of may influence competition between photoinduced energy and electron-transfer processes and lead to improved singlet oxygen generation. In contrast to neat , surface modified titanium dioxide can photocatalyze degradation of a very stable substance, cyanuric acid. Presented results are in contradiction to usually accepted hypothesis of the mechanism of cyanuric acid photodegradation in the presence of fluorinated (F−) in which "bulk" hydroxyl radicals play a key role. It seems plausible that the difference of activity observed for and F− is not related to various types of generated hydroxyl radicals, but rather to competition between electron-transfer processes (formation of radicals) and energy-transfer processes (formation of singlet oxygen).

Affiliation
Wydział Chemii : Zakład Chemii Nieorganicznej
Scopus© citations
205
dc.abstract.enSubstitution of surface −OH groups of $TiO_{2}$ may influence competition between photoinduced energy and electron-transfer processes and lead to improved singlet oxygen generation. In contrast to neat $TiO_{2}$, surface modified titanium dioxide can photocatalyze degradation of a very stable substance, cyanuric acid. Presented results are in contradiction to usually accepted hypothesis of the mechanism of cyanuric acid photodegradation in the presence of fluorinated $TiO_{2}$ (F−$TiO_{2}$) in which "bulk" hydroxyl radicals play a key role. It seems plausible that the difference of activity observed for $TiO_{2}$ and F−$TiO_{2}$ is not related to various types of generated hydroxyl radicals, but rather to competition between electron-transfer processes (formation of radicals) and energy-transfer processes (formation of singlet oxygen).pl
dc.affiliationWydział Chemii : Zakład Chemii Nieorganicznejpl
dc.contributor.authorKyzioł, Agnieszka - 147927 pl
dc.contributor.authorKrakowska, Elżbietapl
dc.contributor.authorStochel, Grażyna - 132108 pl
dc.contributor.authorMacyk, Wojciech - 130162 pl
dc.date.accessioned2014-12-23T16:29:15Z
dc.date.available2014-12-23T16:29:15Z
dc.date.issued2006pl
dc.description.additionalNa publikacji autorka Kyzioł Agnieszka podpisana jako Jańczyk Agnieszka.pl
dc.description.number49pl
dc.description.physical15574-15575pl
dc.description.volume128pl
dc.identifier.doi10.1021/ja065970mpl
dc.identifier.eissn1520-5126pl
dc.identifier.issn0002-7863pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/2407
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceBez licencji otwartego dostępu
dc.rights.uri*
dc.subtypeArticlepl
dc.titleSinglet oxygen photogeneration at surface modified titanium dioxidepl
dc.title.journalJournal of the American Chemical Societypl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
Substitution of surface −OH groups of $TiO_{2}$ may influence competition between photoinduced energy and electron-transfer processes and lead to improved singlet oxygen generation. In contrast to neat $TiO_{2}$, surface modified titanium dioxide can photocatalyze degradation of a very stable substance, cyanuric acid. Presented results are in contradiction to usually accepted hypothesis of the mechanism of cyanuric acid photodegradation in the presence of fluorinated $TiO_{2}$ (F−$TiO_{2}$) in which "bulk" hydroxyl radicals play a key role. It seems plausible that the difference of activity observed for $TiO_{2}$ and F−$TiO_{2}$ is not related to various types of generated hydroxyl radicals, but rather to competition between electron-transfer processes (formation of radicals) and energy-transfer processes (formation of singlet oxygen).
dc.affiliationpl
Wydział Chemii : Zakład Chemii Nieorganicznej
dc.contributor.authorpl
Kyzioł, Agnieszka - 147927
dc.contributor.authorpl
Krakowska, Elżbieta
dc.contributor.authorpl
Stochel, Grażyna - 132108
dc.contributor.authorpl
Macyk, Wojciech - 130162
dc.date.accessioned
2014-12-23T16:29:15Z
dc.date.available
2014-12-23T16:29:15Z
dc.date.issuedpl
2006
dc.description.additionalpl
Na publikacji autorka Kyzioł Agnieszka podpisana jako Jańczyk Agnieszka.
dc.description.numberpl
49
dc.description.physicalpl
15574-15575
dc.description.volumepl
128
dc.identifier.doipl
10.1021/ja065970m
dc.identifier.eissnpl
1520-5126
dc.identifier.issnpl
0002-7863
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/2407
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
Bez licencji otwartego dostępu
dc.rights.uri*
dc.subtypepl
Article
dc.titlepl
Singlet oxygen photogeneration at surface modified titanium dioxide
dc.title.journalpl
Journal of the American Chemical Society
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations
No affiliation
Kyzioł, Agnieszka
Krakowska, Elżbieta
Stochel, Grażyna
Macyk, Wojciech

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