First correlation of nanoparticle size-dependent formation with the ionic liquid anion molecular volume.
Stable silver nanoparticles are obtained reproducibly by hydrogen reduction of different inorganic precursors from AgIX salts (X = BF4, PF6, OTf) dissolved in the ionic liquids BMim+BF4-, BMim+PF6-, BMim+OTf-, or BtMA+NTf2- [BMim+ = n-butylmethylimidazolium, BtMA+ = n-butyltrimethylammonium, NTf2 = N(O2SCF3)2, and OTf = O3SCF3] in the presence of n-butylimidazole (Bim) as the scavenger for the HX acid byproduct and with a narrow size distribution in the diameter range of 2.8-26.1 nm, which increases linearly with the molecular volume of the ionic liquid anion (transmission electron microscopy characterization).
Redel
Engelbert
E
Institut für Anorganische und Analytische Chemie, Universität Freiburg, Albertstrasse 21, D-79104, Freiburg, Germany.
Thomann
Ralf
R
Janiak
Christoph
C
D000838:Anions / Q000138:chemical synthesis / Q000737:chemistry; D052578:Ionic Liquids / Q000138:chemical synthesis / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D012834:Silver / Q000737:chemistry*
D000838:Anions; D052578:Ionic Liquids; D012834:Silver