Simple view
Full metadata view
Authors
Statistics
Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst
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 (
cris.lastimport.scopus | 2024-04-07T15:02:28Z | |
cris.lastimport.wos | 2024-04-10T00:59:49Z | |
dc.abstract.en | 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. | pl |
dc.affiliation | Wydział Chemii : Zakład Chemii Nieorganicznej | pl |
dc.contributor.author | Lettmann, Christian | pl |
dc.contributor.author | Hildenbrandt, Knut | pl |
dc.contributor.author | Kisch, Horst | pl |
dc.contributor.author | Macyk, Wojciech - 130162 | pl |
dc.contributor.author | Maier, Wilhelm F. | pl |
dc.date.accessioned | 2015-09-15T08:10:53Z | |
dc.date.available | 2015-09-15T08:10:53Z | |
dc.date.issued | 2001 | pl |
dc.description.number | 4 | pl |
dc.description.physical | 215-227 | pl |
dc.description.volume | 32 | pl |
dc.identifier.doi | 10.1016/S0926-3373(01)00141-2 | pl |
dc.identifier.eissn | 1873-3883 | pl |
dc.identifier.issn | 0926-3373 | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/15648 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights | Dodaję tylko opis bibliograficzny | * |
dc.rights.licence | bez licencji | |
dc.rights.uri | * | |
dc.subtype | Article | pl |
dc.title | Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst | pl |
dc.title.journal | Applied Catalysis. B, Environmental | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |