Synthesis of Silver and Gold Nanoparticles in Sodium Alginate Matrix Enriched with Graphene Oxide and Investigation of Properties of the Obtained Thin Films
| Autor: | Karen Khachatryan, Nikola Nowak, Anna Konieczna-Molenda, Wiktoria Grzebieniarz, Marcel Krzan, Gohar Khachatryan, J. Grzyb |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Polymer nanocomposite QH301-705.5 QC1-999 Oxide Multiangle light scattering polysaccharides 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention sodium alginate nanosilver chemistry.chemical_compound Differential scanning calorimetry law nanocomposites General Materials Science Fourier transform infrared spectroscopy Biology (General) Instrumentation QD1-999 Fluid Flow and Transfer Processes Nanocomposite Graphene Process Chemistry and Technology Physics General Engineering 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) nanogold 0104 chemical sciences Computer Science Applications Chemistry Chemical engineering chemistry Colloidal gold graphene oxide TA1-2040 0210 nano-technology |
| Zdroj: | Applied Sciences Volume 11 Issue 9 Applied Sciences, Vol 11, Iss 3857, p 3857 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11093857 |
| Popis: | Polymer nanocomposites containing nanometals became a subject of interest due to their bactericidal properties. Different polysaccharides have been used as matrices for nanosilver and nanogold synthesis. In this study, we present a novel, environmentally friendly method for the preparation of sodium alginate/nanosilver/graphene oxide (GOX) and sodium alginate/nanogold/graphene oxide GOX nanocomposites and their characteristics. The formation of approximately 10–20 nm ball-shaped Ag and Au nanoparticles was confirmed by UV–vis spectroscopy, scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectra. The incorporation of GOX sheets within the ALG matrix improved the thermal stability of the nanocomposites film, which was measured using the differential scanning calorimetry (DSC). We also estimated the molecular weights of polysaccharide chains of the matrix with the size exclusion chromatography coupled with multiangle laser light scattering and refractometric detectors (HPSEC-MALLS-RI). The composites were more prone to enzymatic hydrolysis. The strongest bacteriostatic activity was observed for the sample containing nanosilver. |
| Databáze: | OpenAIRE |
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