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Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst
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Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst
Bibliographic description
| title: | Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst |
| author: | Lettmann Christian, Hildenbrandt Knut, Kisch Horst, Macyk Wojciech  , Maier Wilhelm F. |
| journal title: | Applied Catalysis. B, Environmental |
| volume: | 32 |
| issue: | 4 |
| date of publication : | 2001 |
| pages: | 215-227 |
| ISSN: |
0926-3373 |
| eISSN: |
1873-3883 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | 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. |
| affiliation: | Wydział Chemii : Zakład Chemii Nieorganicznej |
| type: | journal article |
| subtype: | academic paper |
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Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
