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Chemistry of materials, 2010-09, Vol.22 (17), p.4980-4986
Ort / Verlag
American Chemical Society
Erscheinungsjahr
2010
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
We present a facile, broadly applicable method to prepare nanoporous silver films using soluble salt nanoparticles as pore templates. The fabrication starts by printing a silver/CaCO3 nanoparticle based ink onto a flexible substrate and removing the CaCO3 by washing in a weak acid. The membrane thickness and pore size can easily be tuned between 0.5−5 μm and 30−300 nm, respectively, by a simple pH or temperature treatment (sintering at 200 °C). As a conceptual demonstration of the resulting large-area, defect-free, and homogeneous microstructure, we use these membranes to efficiently filter aqueous dispersions of carbon nanoparticles (20 nm primary particle size) at a filtration efficiency of >99.6%.