Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye
This work describes a novel approach for water treatment by photoelectrocatalysis, based on nanostructured TiO₂. The decolorization of aqueous solutions containing the azo-dye RR243 is carried out in a tubular photocatalytic reactor working in semi-batch mode under electrical polarization of the cat...
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| Дата: | 2015 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
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Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України
2015
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| Назва видання: | Химия и технология воды |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/132592 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye / S. Franz, D. Perego, O. Marchese, M. Bestetti // Химия и технология воды. — 2015. — Т. 37, № 3. — С. 207-219. — Бібліогр.: 22 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1325922018-04-22T03:03:39Z Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye Franz, S. Perego, D. Marchese, O. Bestetti, M. Физическая химия процессов обработки воды This work describes a novel approach for water treatment by photoelectrocatalysis, based on nanostructured TiO₂. The decolorization of aqueous solutions containing the azo-dye RR243 is carried out in a tubular photocatalytic reactor working in semi-batch mode under electrical polarization of the catalyst. Two different nanostructured catalysts were tested: nanotubular TiO₂ obtained by conventional anodization (CA), and a novel photoactive nanoporous TiO₂, obtained by plasma electrolytic oxidation (PEO). Neither UV irradiation of the TiO₂ catalysts nor the electrical bias individually considered lead to a significant reduction of the dye concentration. By irradiating the catalysts with UVC light while applying an electrical bias to the same, the concentration of the dye decreased from 25 L to 2,5 mg/L using the nanotubular CA TiO₂ catalyst, and to less than 1,8 mg/L using the novel nanoporous PEO TiO₂ in 50 min. The main advantages of this method over current approaches for the degradation of pollutants are both the considerable processing time reduction and a suitable and easy-to-scale-up reactor design. A further advantage is the relatively easyness in the production of the TiO₂ catalysts by PEO. 2015 Article Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye / S. Franz, D. Perego, O. Marchese, M. Bestetti // Химия и технология воды. — 2015. — Т. 37, № 3. — С. 207-219. — Бібліогр.: 22 назв. — англ. 0204-3556 http://dspace.nbuv.gov.ua/handle/123456789/132592 en Химия и технология воды Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Физическая химия процессов обработки воды Физическая химия процессов обработки воды |
| spellingShingle |
Физическая химия процессов обработки воды Физическая химия процессов обработки воды Franz, S. Perego, D. Marchese, O. Bestetti, M. Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye Химия и технология воды |
| description |
This work describes a novel approach for water treatment by photoelectrocatalysis, based on nanostructured TiO₂. The decolorization of aqueous solutions containing the azo-dye RR243 is carried out in a tubular photocatalytic reactor working in semi-batch mode under electrical polarization of the catalyst. Two different nanostructured catalysts were tested: nanotubular TiO₂ obtained by conventional anodization (CA), and a novel photoactive nanoporous TiO₂, obtained by plasma electrolytic oxidation (PEO). Neither UV irradiation of the TiO₂ catalysts nor the electrical bias individually considered lead to a significant reduction of the dye concentration. By irradiating the catalysts with UVC light while applying an electrical bias to the same, the concentration of the dye decreased from 25 L to 2,5 mg/L using the nanotubular CA TiO₂ catalyst, and to less than 1,8 mg/L using the novel nanoporous PEO TiO₂ in 50 min. The main advantages of this method over current approaches for the degradation of pollutants are both the considerable processing time reduction and a suitable and easy-to-scale-up reactor design. A further advantage is the relatively easyness in the production of the TiO₂ catalysts by PEO. |
| format |
Article |
| author |
Franz, S. Perego, D. Marchese, O. Bestetti, M. |
| author_facet |
Franz, S. Perego, D. Marchese, O. Bestetti, M. |
| author_sort |
Franz, S. |
| title |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye |
| title_short |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye |
| title_full |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye |
| title_fullStr |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye |
| title_full_unstemmed |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye |
| title_sort |
photoelectrochemical advanced oxidation processes on nanostructured tio₂ catalysts: decolorization of a textile azo-dye |
| publisher |
Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України |
| publishDate |
2015 |
| topic_facet |
Физическая химия процессов обработки воды |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/132592 |
| citation_txt |
Photoelectrochemical advanced oxidation processes on nanostructured TiO₂ catalysts: decolorization of a textile azo-dye / S. Franz, D. Perego, O. Marchese, M. Bestetti // Химия и технология воды. — 2015. — Т. 37, № 3. — С. 207-219. — Бібліогр.: 22 назв. — англ. |
| series |
Химия и технология воды |
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2023-10-18T21:04:33Z |
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