The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst
Samples of precipitated SnO2 were modified by means of mechanochemical and microwave treatment. Physicochemical properties of all samples were investigated using DTA, XRD, FTIR spectroscopy, nitrogen adsorption-desorption and UV-Vis spectroscopy. Photocatalytic activity was evaluated us...
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| Дата: | 2023 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
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V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine
2023
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| Онлайн доступ: | https://kataliz.org.ua/index.php/journal/article/view/94 |
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| Назва журналу: | Catalysis and petrochemistry |
Репозитарії
Catalysis and petrochemistry| _version_ | 1859471927747280896 |
|---|---|
| author | Samsonenko, Mariia M. Khalameida, Svitlana V. |
| author_facet | Samsonenko, Mariia M. Khalameida, Svitlana V. |
| author_sort | Samsonenko, Mariia M. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2024-12-24T10:38:54Z |
| description | Samples of precipitated SnO2 were modified by means of mechanochemical and microwave treatment. Physicochemical properties of all samples were investigated using DTA, XRD, FTIR spectroscopy, nitrogen adsorption-desorption and UV-Vis spectroscopy. Photocatalytic activity was evaluated using the degradation of rhodamine B and safranin T under Vis-irradiation. It was found that the initial precipitated and modified samples correspond to the composition of tin oxyhydroxide - SnO(OH)х. It has been established that as a result of mechanochemical and microwave treatment of tin oxyhydroxide in the wet gel stage, it is possible to obtain photocatalytically active materials with a uniform mesoporous structure and high specific surface values and a band gap of about 3.5-3.6 eV. A peculiarity of the mechanochemical treatment of xerogels in water is the formation of a meso-macroporous structure. Relationship between physicochemical and photocatalytic properties of prepared samples has been discussed. The dependence of the efficiency of photocatalytic degradation of dyes on changes in the porous structure, the presence of defects on the surface of the catalyst, and its electronic characteristics was established. |
| first_indexed | 2026-03-12T15:50:19Z |
| format | Article |
| id | oai:katalizorgua:article-94 |
| institution | Catalysis and petrochemistry |
| keywords_txt_mv | keywords |
| language | English |
| last_indexed | 2026-03-12T15:50:19Z |
| publishDate | 2023 |
| publisher | V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine |
| record_format | ojs |
| spelling | oai:katalizorgua:article-942024-12-24T10:38:54Z The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst Samsonenko, Mariia M. Khalameida, Svitlana V. SnO2, mechanochemical and microwave treatment, porous structure, photocatalytic activity, dyes, Vis-irradiation SnO2, mechanochemical and microwave treatment, porous structure, photocatalytic activity, dyes, Vis-irradiation Samples of precipitated SnO2 were modified by means of mechanochemical and microwave treatment. Physicochemical properties of all samples were investigated using DTA, XRD, FTIR spectroscopy, nitrogen adsorption-desorption and UV-Vis spectroscopy. Photocatalytic activity was evaluated using the degradation of rhodamine B and safranin T under Vis-irradiation. It was found that the initial precipitated and modified samples correspond to the composition of tin oxyhydroxide - SnO(OH)х. It has been established that as a result of mechanochemical and microwave treatment of tin oxyhydroxide in the wet gel stage, it is possible to obtain photocatalytically active materials with a uniform mesoporous structure and high specific surface values and a band gap of about 3.5-3.6 eV. A peculiarity of the mechanochemical treatment of xerogels in water is the formation of a meso-macroporous structure. Relationship between physicochemical and photocatalytic properties of prepared samples has been discussed. The dependence of the efficiency of photocatalytic degradation of dyes on changes in the porous structure, the presence of defects on the surface of the catalyst, and its electronic characteristics was established. Зразки осадженого SnO2 модифікували за допомогою механохімічної та мікрохвильової обробки. Фізико-хімічні властивості всіх зразків були досліджені за допомогою ДТА, РФА, FTIR-спектроскопії, адсорбції-десорбції азоту та UV-Vis спектроскопії. Фотокаталітичну активність під дією видимого світла оцінювали за допомогою розкладу родаміну Б і сафраніну Т у водному середовищі. Показано, що вихідні осаджені та модифіковані зразки відповідають складу оксигідроксиду олова – SnO(OH)х. Встановлено, що в результаті механохімічної та мікрохвильової обробки оксигідроксиду олова на стадії вологого гелю можна отримати фотокаталітично активні матеріали з однорідною мезопоруватою структурою та високими значеннями питомої поверхні та шириною забороненої зони близько 3.5-3.6 еВ. Особливістю механохімічної обробки ксерогелів у воді є утворення мезо-макропоруватої структури. Обговорено зв’язок між фізико-хімічними та фотокаталітичними властивостями модифікованих зразків. Встановлено залежність ефективності фотокаталітичної деградації барвників від зміни поруватої структури, наявності дефектів на поверхні фотокаталізатора та його електронних характеристик. V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine 2023-09-07 Article Article application/pdf https://kataliz.org.ua/index.php/journal/article/view/94 10.15407/kataliz2023.34.073 Catalysis and petrochemistry; No. 34 (2023): Catalysis and petrochemistry; 73-85 Каталіз та нафтохімія; № 34 (2023): Каталіз та нафтохімія; 73-85 2707-5796 2412-4176 10.15407/kataliz2023.34 en https://kataliz.org.ua/index.php/journal/article/view/94/86 Copyright (c) 2023 Catalysis and petrochemistry |
| spellingShingle | SnO2 mechanochemical and microwave treatment porous structure photocatalytic activity dyes Vis-irradiation Samsonenko, Mariia M. Khalameida, Svitlana V. The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_alt | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_full | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_fullStr | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_full_unstemmed | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_short | The influence of mechanochemical and microwave modification on the properties of SnO2 as photocatalyst |
| title_sort | influence of mechanochemical and microwave modification on the properties of sno2 as photocatalyst |
| topic | SnO2 mechanochemical and microwave treatment porous structure photocatalytic activity dyes Vis-irradiation |
| topic_facet | SnO2 mechanochemical and microwave treatment porous structure photocatalytic activity dyes Vis-irradiation SnO2 mechanochemical and microwave treatment porous structure photocatalytic activity dyes Vis-irradiation |
| url | https://kataliz.org.ua/index.php/journal/article/view/94 |
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