On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions
. The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
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Belarusian National Technical University
2018-12-01
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| Series: | Nauka i Tehnika |
| Subjects: | |
| Online Access: | https://sat.bntu.by/jour/article/view/1904 |
| _version_ | 1811213925843206144 |
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| author | V. A. Gorbunova L. M. Sliapniova |
| author_facet | V. A. Gorbunova L. M. Sliapniova |
| author_sort | V. A. Gorbunova |
| collection | DOAJ |
| description | . The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases of photocatalytic systems were investigated, which are based on: a) titania hydrosol obtained by hydrolysis of titanium isobutylate; b) a similar hydrosol with addition of Fe(III) ions; c) suspension of ilmenite powder based on FeTiO3. As a result of the investigation, the increase of the rate of destruction of methylorange by more than two times was found in the system with the introduction of a small amount of iron ions into initial suspension of the TiO2 hydrosol (at the obtaining a medium with the Fe3+ concentration up to 3.7 × 10–5 M). In the photocatalytic system, based on the suspension of pretreated (with suphation and calcination) ilmenite powder, enough high photocatalytic activity (the degree of methylorange decomposition up to 77 %) was measured but at a higher exposure than for the case of systems based on the TiO2 hydrosol. For the photocatalytic systems of the type being investigated, a possible mechanism of increasing their oxidative activity was briefly considered, which requires an additional physico-chemical analysis. |
| first_indexed | 2024-04-12T05:54:30Z |
| format | Article |
| id | doaj.art-f8c6560176d9418d97ebca27c00834f0 |
| institution | Directory Open Access Journal |
| issn | 2227-1031 2414-0392 |
| language | Russian |
| last_indexed | 2024-04-12T05:54:30Z |
| publishDate | 2018-12-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Nauka i Tehnika |
| spelling | doaj.art-f8c6560176d9418d97ebca27c00834f02022-12-22T03:45:11ZrusBelarusian National Technical UniversityNauka i Tehnika2227-10312414-03922018-12-0117652152710.21122/2227-1031-2018-17-6-521-5271764On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous SuspensionsV. A. Gorbunova0L. M. Sliapniova1Belarusian National Technical UniversityBelarusian National Technical University. The photocatalytic activity of three systems, promising for chemical water purification technologies, was experimentally compared, based on a combination of titanium dioxide/(Fe(II, III)), applying to the model oxidation reaction of methylorange organic dye in an aqueous medium. Herewith the cases of photocatalytic systems were investigated, which are based on: a) titania hydrosol obtained by hydrolysis of titanium isobutylate; b) a similar hydrosol with addition of Fe(III) ions; c) suspension of ilmenite powder based on FeTiO3. As a result of the investigation, the increase of the rate of destruction of methylorange by more than two times was found in the system with the introduction of a small amount of iron ions into initial suspension of the TiO2 hydrosol (at the obtaining a medium with the Fe3+ concentration up to 3.7 × 10–5 M). In the photocatalytic system, based on the suspension of pretreated (with suphation and calcination) ilmenite powder, enough high photocatalytic activity (the degree of methylorange decomposition up to 77 %) was measured but at a higher exposure than for the case of systems based on the TiO2 hydrosol. For the photocatalytic systems of the type being investigated, a possible mechanism of increasing their oxidative activity was briefly considered, which requires an additional physico-chemical analysis.https://sat.bntu.by/jour/article/view/1904chemical water purificationphoto-catalystscombination of titanium dioxide/fe(iiiii)hydrosolsuspensionilmeniteoxidation of organic dyekinetics |
| spellingShingle | V. A. Gorbunova L. M. Sliapniova On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions Nauka i Tehnika chemical water purification photo-catalysts combination of titanium dioxide/fe(ii iii) hydrosol suspension ilmenite oxidation of organic dye kinetics |
| title | On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions |
| title_full | On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions |
| title_fullStr | On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions |
| title_full_unstemmed | On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions |
| title_short | On Photocatalytic Activity of Systems of Titania/(Fe (II, III))-Type in Aqueous Suspensions |
| title_sort | on photocatalytic activity of systems of titania fe ii iii type in aqueous suspensions |
| topic | chemical water purification photo-catalysts combination of titanium dioxide/fe(ii iii) hydrosol suspension ilmenite oxidation of organic dye kinetics |
| url | https://sat.bntu.by/jour/article/view/1904 |
| work_keys_str_mv | AT vagorbunova onphotocatalyticactivityofsystemsoftitaniafeiiiiitypeinaqueoussuspensions AT lmsliapniova onphotocatalyticactivityofsystemsoftitaniafeiiiiitypeinaqueoussuspensions |