Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania
The role of UV-irradiation on oil and its derivatives is particularly important for analyzing the degradability of specific oil compounds. Also, nanostructured-TiO2 is one of the most promising photocatalysts so it is expected to be useful in their degradation. However the complexity of crude oil, a...
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Wiley
2014-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2014/401239 |
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| author | Debra Jene Kirkconnell Reyes Andrés García Saravia Ortiz de Montellano Rudy Amilcar Trejo Tzab Gerko Oskam Juan José Alvarado Gil |
| author_facet | Debra Jene Kirkconnell Reyes Andrés García Saravia Ortiz de Montellano Rudy Amilcar Trejo Tzab Gerko Oskam Juan José Alvarado Gil |
| author_sort | Debra Jene Kirkconnell Reyes |
| collection | DOAJ |
| description | The role of UV-irradiation on oil and its derivatives is particularly important for analyzing the degradability of specific oil compounds. Also, nanostructured-TiO2 is one of the most promising photocatalysts so it is expected to be useful in their degradation. However the complexity of crude oil, as well as that of the reactions involved, is such that the effect of the presence of TiO2 under illumination is not well understood. In this paper, the influence of UV-Vis irradiation on vanadium etioporphyrins, extracted from crude oil from Dos Bocas, Tabasco, Mexico, is studied using UV-Vis spectrophotometry in the absence and presence of nanostructured TiO2 or nitrogen-doped TiO2 modified with copper (N-TiO2/Cu). It is shown that the addition of water shortens the time to start photodegradation. However, once this process has initiated, the system enters a second stage, that is very similar for samples with or without water. It is also shown that the use of N-TiO2/Cu induces an important delay in the initiation of the porphyrins’ photodegradation process. Additionally, it has been found that the presence of TiO2 in samples extracted with water induces a small reduction in the photodegradation duration and, hence, that TiO2 can catalyze the degradation of petroporphyrins. |
| format | Article |
| id | doaj-art-c558aba56e024203a19d3e1993a79f29 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | International Journal of Photoenergy |
| spelling | doaj-art-c558aba56e024203a19d3e1993a79f292025-02-03T01:10:51ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/401239401239Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured TitaniaDebra Jene Kirkconnell Reyes0Andrés García Saravia Ortiz de Montellano1Rudy Amilcar Trejo Tzab2Gerko Oskam3Juan José Alvarado Gil4Department of Applied Physics, CINVESTAV-Unidad Mérida, Antigua Carretera a Progreso Km. 6, 97310 Mérida, YUC, MexicoDepartment of Applied Physics, CINVESTAV-Unidad Mérida, Antigua Carretera a Progreso Km. 6, 97310 Mérida, YUC, MexicoFacultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Km. 33.5, Tablaje Catastral 13615, Col. Chuburná de Hidalgo Inn, 97310 Mérida, YUC, MexicoDepartment of Applied Physics, CINVESTAV-Unidad Mérida, Antigua Carretera a Progreso Km. 6, 97310 Mérida, YUC, MexicoDepartment of Applied Physics, CINVESTAV-Unidad Mérida, Antigua Carretera a Progreso Km. 6, 97310 Mérida, YUC, MexicoThe role of UV-irradiation on oil and its derivatives is particularly important for analyzing the degradability of specific oil compounds. Also, nanostructured-TiO2 is one of the most promising photocatalysts so it is expected to be useful in their degradation. However the complexity of crude oil, as well as that of the reactions involved, is such that the effect of the presence of TiO2 under illumination is not well understood. In this paper, the influence of UV-Vis irradiation on vanadium etioporphyrins, extracted from crude oil from Dos Bocas, Tabasco, Mexico, is studied using UV-Vis spectrophotometry in the absence and presence of nanostructured TiO2 or nitrogen-doped TiO2 modified with copper (N-TiO2/Cu). It is shown that the addition of water shortens the time to start photodegradation. However, once this process has initiated, the system enters a second stage, that is very similar for samples with or without water. It is also shown that the use of N-TiO2/Cu induces an important delay in the initiation of the porphyrins’ photodegradation process. Additionally, it has been found that the presence of TiO2 in samples extracted with water induces a small reduction in the photodegradation duration and, hence, that TiO2 can catalyze the degradation of petroporphyrins.http://dx.doi.org/10.1155/2014/401239 |
| spellingShingle | Debra Jene Kirkconnell Reyes Andrés García Saravia Ortiz de Montellano Rudy Amilcar Trejo Tzab Gerko Oskam Juan José Alvarado Gil Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania International Journal of Photoenergy |
| title | Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania |
| title_full | Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania |
| title_fullStr | Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania |
| title_full_unstemmed | Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania |
| title_short | Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania |
| title_sort | effects of uv vis irradiation on vanadium etioporphyrins extracted from crude oil and the role of nanostructured titania |
| url | http://dx.doi.org/10.1155/2014/401239 |
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