Optimization of Microbial Synthesis of Silver Sulfide Nanoparticles
| Autor: | Konstantin V. Shaitan, T. A. Voeikova, Tatiana Ismagulova, Debabov Vladimir G, O. A. Zhuravliova, T. S. Gracheva, N. V. Bulushova |
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| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
biology Chemistry Silver sulfide Nanoparticle 02 engineering and technology Sodium thiosulfate 010402 general chemistry 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Applied Microbiology and Biotechnology Biochemistry Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound Silver nitrate Chemical engineering Yield (chemistry) Shewanella oneidensis 0210 nano-technology |
| Zdroj: | Applied Biochemistry and Microbiology. 54:800-807 |
| ISSN: | 1608-3024 0003-6838 |
| Popis: | The method for the biosynthesis of silver sulfide nanoparticles using a strain of Shewanella oneidensis MR-1 in an aqueous solution of silver nitrate and sodium thiosulfate salts has been optimized. Optimization is associated with the biosynthesis of nanoparticles directly in the culture medium in the presence of live cells, which increases the nanoparticle yield by 15–20% and significantly shortens the entire process of obtaining nanoparticles. It was also shown that an increase in the concentration of sodium thiosulfate and silver nitrate salts from 1 mM to 10 mM increases the nanoparticle concentration in the reaction solution, whereas the nanoparticle yield in terms of the silver introduced in the reaction decreases. The nanoparticles obtained by the optimized and the conventional methods do not differ in shape, size, and chemical composition. It was shown that the efficiency of nanoparticle biosynthesis depends on the composition of the liquid nutrient medium for S. oneidensis MR-1 cell growth. Cell culturing in nutrient medium for over 24 h fails to intensify the biosynthesis process. |
| Databáze: | OpenAIRE |
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