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Title: | Usage of Laser Raman Spectroscopy to Identify the Unstable Compounds in Iron Oxides |
Other Titles: | استخدام مطيافية رامان لتحديد المركبات غير المستقرة فى أوكسيدات الحديد |
Authors: | Mohammed, Siham Mohammed Hassen Supervisor, -Nafie A. Almuslet |
Keywords: | Laser Laser Applications. Raman Spectroscopy Compounds in Iron Oxides |
Issue Date: | 18-Sep-2017 |
Publisher: | Sudan University of Science and Technology |
Citation: | Mohammed, Siham Mohammed Hassen .Usage of Laser Raman Spectroscopy to Identify the Unstable Compounds in Iron Oxides\Siham Mohammed Hassen Mohammed;Nafie A. Almuslet.-Khartoum : Sudan univresity of science and technology , Institute Of Laser , 2017.- 84 P . : ill. ; 28cm .-PhD |
Abstract: | In this work laser Raman Spectroscopy was used to identify the unstable compounds in five samples of iron oxides (hematite, magnetite, goethite, akaganeite and 2-line ferrihydrite). Firstly iron oxide samples were prepared using Fe (N03)3 9H2O and KOH with different molar ratios through the chemical method in lab. These samples were irradiated using 5mW frequency doubled Nd-YAG laser with 532 nm at room temperature. Spectra database was used for the spectral analysis of the Raman shift of these five samples. The obtained results showed that the bands of unstable compounds are appeared clearly in the spectra of the samples. Characteristic bands of hematite were appeared in the spectra of magnetite, goethite, akaganeite and 2-line ferrihydrite compounds while bands of magnetite compounds were appeared in the spectra of hematite. The laser power causes the bands to broaden and to undergo a small shift to lower wavenumbers. Other materials were appeared in spectra of the five samples, like disulfide, alkyl disulfide, chlorolkanes and aliphatic fluoro. Raman spectroscopy proved to be suitable for the identification of unstable compounds in hematite, magnetite, goethite, akaganeite and ferrihydrite and could be used for other materials |
Description: | Thesis |
URI: | http://repository.sustech.edu/handle/123456789/18725 |
Appears in Collections: | PhD theses : Laser |
Files in This Item:
File | Description | Size | Format | |
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Usage of Laser Raman ... .pdf | Title | 79.29 kB | Adobe PDF | View/Open |
Breaks.pdf | Breaks | 6.06 kB | Adobe PDF | View/Open |
Research.pdf | Research | 2.01 MB | Adobe PDF | View/Open |
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