Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions
In this study, a homemade photoreactor equipped with 125w/542 high pressure mercury lamp as a source for near-UV radiation, was used for photocatalytic degradation of aqueous solutions of Bismarck brown G, (C18H20N8Cl2),4-[5-(2,4-Diamino-5-methylphenyl)diazenyl-2-methylphenyl] diazenyl -6-methylben...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | E-Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2010/719674 |
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| author | Falah H. Hussein Ahmed F. Halbus Hussein A. K. Hassan Wisam A. K. Hussein |
| author_facet | Falah H. Hussein Ahmed F. Halbus Hussein A. K. Hassan Wisam A. K. Hussein |
| author_sort | Falah H. Hussein |
| collection | DOAJ |
| description | In this study, a homemade photoreactor equipped with 125w/542 high pressure mercury lamp as a source for near-UV radiation, was used for photocatalytic degradation of aqueous solutions of Bismarck brown G, (C18H20N8Cl2),4-[5-(2,4-Diamino-5-methylphenyl)diazenyl-2-methylphenyl] diazenyl -6-methylbenzol-1,3-diamin using zinc oxide. The disappearance of the original colored reactant concentrations with irradiation time was monitored spectrophotometrically by comparison with unexposed controls. It is noticed that the photocatalytic degradation process was high at the beginning and then decreased with time following pseudo first-order kinetics according to the Langmuir–Hinshelwood model. The effects of zinc oxide mass, dye concentration and temperature on photocatalytic decolorization efficiency (P.D.E.) were studied. P.D.E. reached 95.76% for Bismarck brown G after 50 minutes of irradiation at 293.15 K P.D.E. was found to increase with increasing temperature and the activation energy of photocatalytic degradation was calculated and found to be equal to 32±1 kJ mol-1. |
| format | Article |
| id | doaj-art-98bb0c63de5144deac4bf3ccdfef8e0c |
| institution | Kabale University |
| issn | 0973-4945 2090-9810 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | E-Journal of Chemistry |
| spelling | doaj-art-98bb0c63de5144deac4bf3ccdfef8e0c2025-02-03T00:59:31ZengWileyE-Journal of Chemistry0973-49452090-98102010-01-017254054410.1155/2010/719674Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous SolutionsFalah H. Hussein0Ahmed F. Halbus1Hussein A. K. Hassan2Wisam A. K. Hussein3Chemistry Department, College of Science, Babylon University, Hilla, IraqChemistry Department, College of Science, Babylon University, Hilla, IraqChemistry Department, College of Science, Babylon University, Hilla, IraqChemistry Department, College of Science, Babylon University, Hilla, IraqIn this study, a homemade photoreactor equipped with 125w/542 high pressure mercury lamp as a source for near-UV radiation, was used for photocatalytic degradation of aqueous solutions of Bismarck brown G, (C18H20N8Cl2),4-[5-(2,4-Diamino-5-methylphenyl)diazenyl-2-methylphenyl] diazenyl -6-methylbenzol-1,3-diamin using zinc oxide. The disappearance of the original colored reactant concentrations with irradiation time was monitored spectrophotometrically by comparison with unexposed controls. It is noticed that the photocatalytic degradation process was high at the beginning and then decreased with time following pseudo first-order kinetics according to the Langmuir–Hinshelwood model. The effects of zinc oxide mass, dye concentration and temperature on photocatalytic decolorization efficiency (P.D.E.) were studied. P.D.E. reached 95.76% for Bismarck brown G after 50 minutes of irradiation at 293.15 K P.D.E. was found to increase with increasing temperature and the activation energy of photocatalytic degradation was calculated and found to be equal to 32±1 kJ mol-1.http://dx.doi.org/10.1155/2010/719674 |
| spellingShingle | Falah H. Hussein Ahmed F. Halbus Hussein A. K. Hassan Wisam A. K. Hussein Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions E-Journal of Chemistry |
| title | Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions |
| title_full | Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions |
| title_fullStr | Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions |
| title_full_unstemmed | Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions |
| title_short | Photocatalytic Degradation of Bismarck Brown G Using Irradiated ZnO in Aqueous Solutions |
| title_sort | photocatalytic degradation of bismarck brown g using irradiated zno in aqueous solutions |
| url | http://dx.doi.org/10.1155/2010/719674 |
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