Production of gold nanoparticles by electrode-respiring Geobacter sulfurreducens biofilms
| Autor: | Emily K. Davenport, Haluk Beyenal, Phuc Thi Ha, Liang Shi, Abid H. Tanzil, Sujala T. Sultana, Alice Dohnalkova, Steven R. Saunders |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Metal Nanoparticles Bioengineering Nanotechnology 02 engineering and technology Applied Microbiology and Biotechnology Biochemistry Article 03 medical and health sciences Microscopy Electron Transmission Spectroscopy Fourier Transform Infrared Extracellular Particle Size Fourier transform infrared spectroscopy Geobacter sulfurreducens chemistry.chemical_classification biology Biomolecule Biofilm Spectrometry X-Ray Emission Green Chemistry Technology Electrochemical Techniques 021001 nanoscience & nanotechnology biology.organism_classification Extracellular Matrix 030104 developmental biology Chemical engineering chemistry Colloidal gold Biofilms Amine gas treating Gold Geobacter 0210 nano-technology Oxidation-Reduction Biotechnology |
| Zdroj: | Enzyme and Microbial Technology. 95:69-75 |
| ISSN: | 0141-0229 |
| DOI: | 10.1016/j.enzmictec.2016.07.012 |
| Popis: | The goal of this work was to synthesize gold nanoparticles (AuNPs) using electrode-respiring Geobacter sulfurreducens biofilms. We found that AuNPs are generated in the extracellular matrix of Geobacter biofilms and have an average particle size of 20 nm. The formation of AuNPs was verified using TEM, FTIR and EDX. We also found that the extracellular substances extracted from electrode-respiring G. sulfurreducens biofilms reduce Au3+ to AuNPs. From FTIR spectra, it appears that reduced sugars were involved in the bioreduction and synthesis of AuNPs and that amine groups acted as the major biomolecules involved in binding. |
| Databáze: | OpenAIRE |
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