Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites
Carbon/titania composites with different loadings were prepared and investigated for phenol adsorption and photo-oxidation from dilute aqueous solutions. The rate of phenol adsorption increased when titanium oxide (P25, Degussa) was immobilized on the carbon support due to the porous features of the...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2010-11-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.28.8-9.727 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841564105515728896 |
|---|---|
| author | Leticia F. Velasco José B. Parra Conchi O. Ania |
| author_facet | Leticia F. Velasco José B. Parra Conchi O. Ania |
| author_sort | Leticia F. Velasco |
| collection | DOAJ |
| description | Carbon/titania composites with different loadings were prepared and investigated for phenol adsorption and photo-oxidation from dilute aqueous solutions. The rate of phenol adsorption increased when titanium oxide (P25, Degussa) was immobilized on the carbon support due to the porous features of the resulting C/TiO 2 composites. The kinetics of phenol adsorption were very fast for samples containing low titanium oxide contents, whereas titania loadings above 20 wt% presented some operational problems that prevented their application in aqueous solutions. Those C/TiO 2 composites which exhibited higher adsorption rates in the absence of illumination also showed a more rapid disappearance of phenol from aqueous solution under UV light, together with the formation of lower amounts of intermediates. Removal efficiencies close to 100% were obtained for C/TiO 2 composites containing ca. 10–15 wt% titanium oxide, with preferential oxidation of phenol through the formation of catechol. |
| format | Article |
| id | doaj-art-761cd43f76314c71b501d94771fc05a0 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2010-11-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-761cd43f76314c71b501d94771fc05a02025-01-02T23:11:46ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382010-11-012810.1260/0263-6174.28.8-9.727Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania CompositesLeticia F. VelascoJosé B. ParraConchi O. AniaCarbon/titania composites with different loadings were prepared and investigated for phenol adsorption and photo-oxidation from dilute aqueous solutions. The rate of phenol adsorption increased when titanium oxide (P25, Degussa) was immobilized on the carbon support due to the porous features of the resulting C/TiO 2 composites. The kinetics of phenol adsorption were very fast for samples containing low titanium oxide contents, whereas titania loadings above 20 wt% presented some operational problems that prevented their application in aqueous solutions. Those C/TiO 2 composites which exhibited higher adsorption rates in the absence of illumination also showed a more rapid disappearance of phenol from aqueous solution under UV light, together with the formation of lower amounts of intermediates. Removal efficiencies close to 100% were obtained for C/TiO 2 composites containing ca. 10–15 wt% titanium oxide, with preferential oxidation of phenol through the formation of catechol.https://doi.org/10.1260/0263-6174.28.8-9.727 |
| spellingShingle | Leticia F. Velasco José B. Parra Conchi O. Ania Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites Adsorption Science & Technology |
| title | Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites |
| title_full | Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites |
| title_fullStr | Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites |
| title_full_unstemmed | Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites |
| title_short | Phenol Adsorption and Photo-Oxidation on Porous Carbon/Titania Composites |
| title_sort | phenol adsorption and photo oxidation on porous carbon titania composites |
| url | https://doi.org/10.1260/0263-6174.28.8-9.727 |
| work_keys_str_mv | AT leticiafvelasco phenoladsorptionandphotooxidationonporouscarbontitaniacomposites AT josebparra phenoladsorptionandphotooxidationonporouscarbontitaniacomposites AT conchioania phenoladsorptionandphotooxidationonporouscarbontitaniacomposites |