Bioreduktion von AuCl4−-Ionen zu Au-Nanopartikeln durch eineVerticillium-Pilzart

Abstract

Die Nanotechnologie umfasst die Synthese von im Nanobereich strukturierten Stoffen, das Verständnis und die Anwendung ihrer ungewöhnlichen physikochemischen und Schoemaker, Eur.

Microbial production of gold nanoparticles

“…It is speculated that gold ions are reduced by enzymes and proteins present in either the cell walls or cytoplasm of the organisms leading to the aggregation of the gold atoms and formation of nanoparticles (24). These assumptions are supported by research performed by Brown and colleagues (34) who used the crystallisation of gold as a model system to show that polypeptides could control the morphology of the resulting gold crystals.…”

“…The ability of bacteria, fungi, actinomycetes (19), yeast (20), algae (21) and plants (22) to accumulate gold ions from solution has been reported and the synthesis of gold nanoparticles has been successfully demonstrated in a range of organisms including Bacillus sp. (23), fungal species such as Verticillium and Fusarium (24,25), actinomycete such as Rhodococcus (26) and Thermomonospora (27) and lactic acid bacteria (28).…”

“…In addition, the possibility to manipulate the size and shape of gold nanoparticles by altering key growth parameters was investigated. (16,17,24) and accumulate gold from solution (13,19,32).…”

Bioinspired Magneto-optical Bacteria

“…An alternative approach to traditional synthetic chemistry is the biosynthesis of nanomaterials which employs natural organisms that reduce metal ions into stable nanoparticles. [9][10][11][12][13][14][15][16] Moreover, it should be borne in mind that there is ever increasing pressure to develop green, eco-friendly and economically-viable synthetic routes to nanomaterials. This has resulted in researchers turning towards biological organisms for inspiration.…”

“…[9][10][11][12][13][14][15][16] Biosynthesized nanoparticles usually exhibit enhanced stability and afford better control over morphology. Furthermore, bio-based fabrication has been shown to be reproducible and includes the possibility of synthesizing hydrophilic nanoparticles.…”