Document Details
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Document Type |
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Thesis |
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Document Title |
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Facile Synthesis of Hydrogel Nanocomposite for Environmental Applications توليف تراكيب الهلام المائي متناهي الصغر للتطبيقات البيئية |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Hydrogels are widely used in drug delivery, wound dressing, tissue scaffolds, and contact lens due to their biocompatibility, while, the brittleness and poor mechanical properties limit its applications. To overcome these restrictions, nanocomposites are prepared which enhanced thermal, electrical, and mechanical properties of polymers. In this research scientific thesis, gelatin (GL) and alginate (Alg) biopolymers are used as an easily removable and recyclable substrate for nanomaterials and transitional (NMs) metal nanoparticles (MNPs). The GL based nanocomposites, such as GL-CuO, Sn-Gd2O3@GL, and Co-SnO2/GL are fabricated by incorporating the prepared copper (II) oxide (CuO), tin-doped gadolinium oxide (Sn-Gd2O3), cobalt doped tin dioxide (Co-SnO2) nanomaterials, respectively. Similarly, the Cu0-CaAlg-BDs are manufactured by loading the Cu+2 ions on the surface of Ca-alginate hydrogel beads. The former GL composites have been developed through in situ polymerization, while, the latter nanocomposite was synthesized by adsorption.
Hydrogel is a 3-dimensional network of polymers. It can easily swell up in water and can hold a significant amount of water content, due to the presence of hydrophilic functional groups, including -SO3H, -COOH, -OH, -NH2, and CONH2, etc. Nanocomposites are solid materials composed of polymer + nanomaterial, where one of the phases has one, two or three dimensions less than 100 nm. Nanocomposite is one of the growing scientific areas, due to its extensive application in industries and laboratories. we synthesized different nanocomposite and decorated Ca-alginate beads and used them for the catalytic reduction of environmental pollutants i.e, 4-nitrophenol (4-NP), 2-nitrophenol (2-NP), 2,6-dinitrophenol (2,6-DNP), congo red (CR), methyl orange (MO), and methylene blue (MB). Further, these nanocomposites were largely characterized by field emission scanning electron microscopy (FESEM), Energy dispersive spectrometer (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), infrared-attenuated total reflection (IR-ATR), and ultraviolet-visible spectroscopy (UV-vis). These coated zero valent metal nanoparticles (ZV-MNPs) and NMs on Alg and GL based nanocomposites are found to be an efficient catalyst for the model reduction reaction of toxic organic dyes. Besides their catalytic efficiency, these hydrogel nanocomposite catalysts could be easily recovered from the reaction matrix as compared to the other catalysts, by simply filtering the solution containing catalyst after completion of the reduction reaction. The recovered catalyst can be used several times. |
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Supervisor |
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Prof. HADI M. MARWANI |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1442 AH
2021 AD |
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Added Date |
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Sunday, August 15, 2021 |
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Researchers
| شاهيد أحمد جيهان | Jehan, Shahid Ahmad | Researcher | Master | |
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