synthesis of noble metal nanoparticles and their non- ordered superstructures by nadja c. bigall,...

Synthesis of noble metal nanoparticles and their non-ordered superstructures

by Nadja C. Bigall, and Alexander Eychmüller

Philosophical Transactions AVolume 368(1915):1385-1404

March 28, 2010

©2010 by The Royal Society

(a) Size distributions of four different batches of nanoparticles.

Nadja C. Bigall, and Alexander Eychmüller Phil. Trans. R. Soc. A 2010;368:1385-1404


(a) Experimentally determined extinction spectra of the platinum particles in aqueous solution.



Scanning electron microscope (a,b) and transmission electron microscope images (c and d) of aerogels from platinum nanoparticles de-stabilized from solution by the addition of ethanol.



Photograph of (a) a gold–silver hydrogel, (b) a piece of the corresponding aerogel (scale bar, 1 mm) and (c) EDX mapping of the aerogel showing equal distributions of gold and silver (scale

bar, 1.2 μm).



Scanning electron micrographs of platinum–silver aerogels at different magnifications (a,b), as well as TEM micrographs of (c) platinum–silver hydrogel and (d) aerogel.



(a) Scanning electron micrograph taken in the backscattering mode of a critical point dried gold–Penicillium citreonigrum hybrid structure after several months of growth; gold appears as bright

areas (scale bar, 20 μm).



Colour photographs of (a) gold–Penicillium citreonigrum hybrid structure in a gold nanoparticle solution and (b) after critical point drying (scale bar, 0.1 cm).



Gold content of different fungi grown under equal conditions obtained from EDX measurements at 500× amplification.



(a) Single gold nanoparticles assembled on the hyphae of Neurospora crassa shown by scanning electron microscopy in the backscattering mode (scale bar, 250 nm).



Different metal affinities (obtained from EDX analysis) of seven different fungi grown for two months in identically prepared colloidal solutions.



Scanning electron micrographs of similar regions within a hybrid structure (a,c: secondary electron mode, b,d: backscattering mode).



synthesis of noble metal nanoparticles and their non- ordered superstructures by nadja c. bigall,...

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