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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 5
BKCSDE 32(5)
May 20, 2011 

Preparation of Silver Nanoparticles in Ultrasonic Vibration-Induced Nanodroplets of Isopropyl Alcohol in Combination with Ionic Liquids
Ueon Sang Shin,*, Hyun-Ki Hong, Hae-Won Kim, Myoung-Seon Gong,*,
Silver nanoparticles, Ionic liquids, Nanodroplets
Silver nanoparticles (<10 nm) were prepared in ultrasonic vibration-induced nanodroplets of isopropyl alcohol (IPA) in combination with hydrophobic room temperature ionic liquids (RTILs). The Ag-precursor used were silver (I) complex, Ag2(ehac)2(eha)2 (ehac = 2-ethylhexylammonium carbamate; eha = 2-ethylhexylamine), in IPA, while 1-butyl-3-methylimidazolium-based ionic liquids bearing SbF6 −, PF6 − and NTf2 − as counter anions were used as RTILs. During sonication for 10-90 min at room temperature, uniform silver nanoparticles with mean sizes of 2 to 8 nm were rapidly synthesized. Transmission electron micrographs also confirmed that silver nanoparticles have a spherical shape and diverse sizes depending on the reaction time (10-90 min).
1583 - 1586
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