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Journal of Nanoparticle Research

Erschienen in:

01.08.2011 | Research paper

Biosynthesis of gold nanoparticles using diatoms—silica-gold and EPS-gold bionanocomposite formation

verfasst von: Adam Schröfel, Gabriela Kratošová, Markéta Bohunická, Edmund Dobročka, Ivo Vávra

Erschienen in: Journal of Nanoparticle Research | Ausgabe 8/2011

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Abstract

Novel synthesis of gold nanoparticles, EPS-gold, and silica-gold bionanocomposites by biologically driven processes employing two diatom strains (Navicula atomus, Diadesmis gallica) is described. Transmission electron microscopy (TEM) and electron diffraction analysis (SAED) revealed a presence of gold nanoparticles in the experimental solutions of the diatom culture mixed with tetrachloroaureate. Nature of the gold nanoparticles was confirmed by X-ray diffraction studies. Scanning electron microscopy (SEM) and TEM showed that the nanoparticles were associated with the diatom frustules and extracellular polysaccharides (EPS) excreted by the diatom cells. Due to its accessibility, simplicity, and effectiveness, this method of nanocomposites preparation has great importance for possible future applications.

Vorheriger Artikel Horizontal low gradient magnetophoresis behaviour of iron oxide nanoclusters at the different steps of the synthesis route

Nächster Artikel Direct and sensitized liquid phase photodeposition for the preparation of alumina supported Pd nanoparticles for applications to heterogeneous catalysis

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Titel: Biosynthesis of gold nanoparticles using diatoms—silica-gold and EPS-gold bionanocomposite formation
verfasst von: Adam Schröfel
Gabriela Kratošová
Markéta Bohunická
Edmund Dobročka
Ivo Vávra
Publikationsdatum: 01.08.2011
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 8/2011
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-011-0221-6

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