Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica
The photocatalytic process of phenol oxidation and Cr(VI) reduction in the presence of nano-silica modified titania was carried out. The activity of composites was tested using two different light sources. The photocatalysts with 10% of nanosilica showed the highest activity. The calcination tempera...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2022-12-01
|
| Series: | Polish Journal of Chemical Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pjct-2022-0025 |
| _version_ | 1797947699708821504 |
|---|---|
| author | Kądziołka Daria Grzechulska-Damszel Joanna Schmidt Beata |
| author_facet | Kądziołka Daria Grzechulska-Damszel Joanna Schmidt Beata |
| author_sort | Kądziołka Daria |
| collection | DOAJ |
| description | The photocatalytic process of phenol oxidation and Cr(VI) reduction in the presence of nano-silica modified titania was carried out. The activity of composites was tested using two different light sources. The photocatalysts with 10% of nanosilica showed the highest activity. The calcination temperature (200–800 oC) significantly determined the sensitivity of the obtained materials to the light source used. Photocatalysts alternately adsorbed and desorbed Cr(VI) ions from the reaction mixture during irradiation. In the one-component mixture, complete oxidation of phenol was observed using material calcined at 650 oC, after 3 h of UV-VIS irradiation. In the reaction mixture of Cr(VI) and phenol, the highest activity was demonstrated by photocatalyst calcined at 300 oC. The concentration of phenol decreased in proportion to the decrease of chromium ions. The obtained titania-silica composites showed oxidizing properties towards phenol and reductive properties toward Cr(VI) ions. |
| first_indexed | 2024-04-10T21:31:55Z |
| format | Article |
| id | doaj.art-a610b3d23d96493d9e51615351d5229d |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-04-10T21:31:55Z |
| publishDate | 2022-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-a610b3d23d96493d9e51615351d5229d2023-01-19T13:20:31ZengSciendoPolish Journal of Chemical Technology1899-47412022-12-01244232910.2478/pjct-2022-0025Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilicaKądziołka Daria0Grzechulska-Damszel Joanna1Schmidt Beata2Department of Inorganic Chemical Technology and Environment Engineering, West Pomeranian University of Technology in Szczecin, Faculty of Chemical Technology and Engineering, Pułaskiego 10, 70-322Szczecin, PolandDepartment of Inorganic Chemical Technology and Environment Engineering, West Pomeranian University of Technology in Szczecin, Faculty of Chemical Technology and Engineering, Pułaskiego 10, 70-322Szczecin, PolandDepartment of Chemical Organic Technology and Polymeric Materials, West Pomeranian University of Technology in Szczecin, Faculty of Chemical Technology and Engineering, Pułaskiego 10, 70-322Szczecin, PolandThe photocatalytic process of phenol oxidation and Cr(VI) reduction in the presence of nano-silica modified titania was carried out. The activity of composites was tested using two different light sources. The photocatalysts with 10% of nanosilica showed the highest activity. The calcination temperature (200–800 oC) significantly determined the sensitivity of the obtained materials to the light source used. Photocatalysts alternately adsorbed and desorbed Cr(VI) ions from the reaction mixture during irradiation. In the one-component mixture, complete oxidation of phenol was observed using material calcined at 650 oC, after 3 h of UV-VIS irradiation. In the reaction mixture of Cr(VI) and phenol, the highest activity was demonstrated by photocatalyst calcined at 300 oC. The concentration of phenol decreased in proportion to the decrease of chromium ions. The obtained titania-silica composites showed oxidizing properties towards phenol and reductive properties toward Cr(VI) ions.https://doi.org/10.2478/pjct-2022-0025photocatalysistitanium dioxidenanosilicawater purification |
| spellingShingle | Kądziołka Daria Grzechulska-Damszel Joanna Schmidt Beata Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica Polish Journal of Chemical Technology photocatalysis titanium dioxide nanosilica water purification |
| title | Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica |
| title_full | Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica |
| title_fullStr | Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica |
| title_full_unstemmed | Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica |
| title_short | Simultaneous photooxidation and photoreduction of phenol and Cr(VI) ions using titania modified with nanosilica |
| title_sort | simultaneous photooxidation and photoreduction of phenol and cr vi ions using titania modified with nanosilica |
| topic | photocatalysis titanium dioxide nanosilica water purification |
| url | https://doi.org/10.2478/pjct-2022-0025 |
| work_keys_str_mv | AT kadziołkadaria simultaneousphotooxidationandphotoreductionofphenolandcrviionsusingtitaniamodifiedwithnanosilica AT grzechulskadamszeljoanna simultaneousphotooxidationandphotoreductionofphenolandcrviionsusingtitaniamodifiedwithnanosilica AT schmidtbeata simultaneousphotooxidationandphotoreductionofphenolandcrviionsusingtitaniamodifiedwithnanosilica |