A novel one-pot 'green' synthesis of stable silver nanoparticles using soluble starch
| Autor: | P.V. Varadarajan, R.P. Nachane, N. Vigneshwaran, R.H. Balasubramanya |
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| Rok vydání: | 2005 |
| Předmět: |
Silver
Starch Inorganic chemistry Nanoparticle Biochemistry Silver nanoparticle Analytical Chemistry Autoclave chemistry.chemical_compound Iodometry Microscopy Electron Transmission X-Ray Diffraction Amylose Spectrophotometry medicine Nanotechnology Particle Size Aqueous solution medicine.diagnostic_test Molecular Structure Organic Chemistry General Medicine Nanostructures chemistry Spectrophotometry Ultraviolet Oxidation-Reduction Nuclear chemistry |
| Zdroj: | Carbohydrate research. 341(12) |
| ISSN: | 0008-6215 |
| Popis: | Stable silver nanoparticles have been synthesized by using soluble starch as both the reducing and stabilizing agents; this reaction was carried out in an autoclave at 15 psi, 121 degrees C for 5 min. Nanoparticles thus prepared are found to be stable in aqueous solution over a period of three months at room temperature (approximately 25 degrees C). The size of these nanoparticles was found to be in the range of 10-34 nm as analyzed using transmission electron micrographs. The X-ray diffraction analysis revealed the face-centred cubic (fcc) geometry of silver nanoparticles. Iodometric titration confirmed the entrapment of silver nanoparticles inside the helical amylose chain. These silver nanoparticles embedded in soluble starch produced a typical emission peak at 553 nm when excited at 380 nm. The use of environmentally benign and renewable materials like soluble starch offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and biomedical applications. |
| Databáze: | OpenAIRE |
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