Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst

2001
journal article
article
551
cris.lastimport.wos2024-04-10T00:59:49Z
dc.abstract.enPhotocatalysts based on titanium dioxide have been prepared by a modified sol–gel process using different alkoxide precur- sors. Depending on the precursor and the calcination temperature of the gels, carbon-containing catalysts with large surface areas, capable to photodegrade p-chlorophenol (4CP) with visible light ($\lambda$>400 nm), have been obtained. Photodegradation and mineralisation were confirmed by HPLC and TOC measurements. The catalysts were characterised by physisorption of argon, elemental analysis, EPR, UV/VIS, X-ray powder diffraction (XRD), FT-IR and high-resolution transmission electron microscopy (HRTEM). A highly condensed, carbonaceous species formed during calcination is responsible for the photosen- sitisation. When used as a photoelectrode, the appearance of a photocurrent indicated the semiconductor nature of these novel materials. The catalysts exhibit a surprisingly good long-time stability despite of the carbonaceous nature of the sensitising species. It is also shown, that commercially available $TiO_{2}$ can be photosensitised by impregnation with suitable alcohols followed by pyrolysis.pl
dc.affiliationWydział Chemii : Zakład Chemii Nieorganicznejpl
dc.contributor.authorLettmann, Christianpl
dc.contributor.authorHildenbrandt, Knutpl
dc.contributor.authorKisch, Horstpl
dc.contributor.authorMacyk, Wojciech - 130162 pl
dc.contributor.authorMaier, Wilhelm F.pl
dc.date.accessioned2015-09-15T08:10:53Z
dc.date.available2015-09-15T08:10:53Z
dc.date.issued2001pl
dc.description.number4pl
dc.description.physical215-227pl
dc.description.volume32pl
dc.identifier.doi10.1016/S0926-3373(01)00141-2pl
dc.identifier.eissn1873-3883pl
dc.identifier.issn0926-3373pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/15648
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licencebez licencji
dc.rights.uri*
dc.subtypeArticlepl
dc.titleVisible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalystpl
dc.title.journalApplied Catalysis. B, Environmentalpl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T00:59:49Z
dc.abstract.enpl
Photocatalysts based on titanium dioxide have been prepared by a modified sol–gel process using different alkoxide precur- sors. Depending on the precursor and the calcination temperature of the gels, carbon-containing catalysts with large surface areas, capable to photodegrade p-chlorophenol (4CP) with visible light ($\lambda$>400 nm), have been obtained. Photodegradation and mineralisation were confirmed by HPLC and TOC measurements. The catalysts were characterised by physisorption of argon, elemental analysis, EPR, UV/VIS, X-ray powder diffraction (XRD), FT-IR and high-resolution transmission electron microscopy (HRTEM). A highly condensed, carbonaceous species formed during calcination is responsible for the photosen- sitisation. When used as a photoelectrode, the appearance of a photocurrent indicated the semiconductor nature of these novel materials. The catalysts exhibit a surprisingly good long-time stability despite of the carbonaceous nature of the sensitising species. It is also shown, that commercially available $TiO_{2}$ can be photosensitised by impregnation with suitable alcohols followed by pyrolysis.
dc.affiliationpl
Wydział Chemii : Zakład Chemii Nieorganicznej
dc.contributor.authorpl
Lettmann, Christian
dc.contributor.authorpl
Hildenbrandt, Knut
dc.contributor.authorpl
Kisch, Horst
dc.contributor.authorpl
Macyk, Wojciech - 130162
dc.contributor.authorpl
Maier, Wilhelm F.
dc.date.accessioned
2015-09-15T08:10:53Z
dc.date.available
2015-09-15T08:10:53Z
dc.date.issuedpl
2001
dc.description.numberpl
4
dc.description.physicalpl
215-227
dc.description.volumepl
32
dc.identifier.doipl
10.1016/S0926-3373(01)00141-2
dc.identifier.eissnpl
1873-3883
dc.identifier.issnpl
0926-3373
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/15648
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
bez licencji
dc.rights.uri*
dc.subtypepl
Article
dc.titlepl
Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst
dc.title.journalpl
Applied Catalysis. B, Environmental
dc.typepl
JournalArticle
dspace.entity.type
Publication
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