Preparation of Silver Nanoparticles in Ultrasonic Vibration-Induced Nanodroplets of Isopropyl Alcohol in Combination with Ionic Liquids

• Published in: Bulletin of the Korean Chemical Society Vol. 32; no. 5; pp. 1583 - 1586
• Main Authors: Shin, Ueon-Sang, Hong, Hyun-Ki, Kim, Hae-Won, Gong, Myoung-Seon
• Format: Journal Article
• Language: English
• Published: 대한화학회 20.05.2011
• Subjects: 화학
• ISSN: 0253-2964; 1229-5949
• DOI: 10.5012/bkcs.2011.32.5.1583

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, Ag_2(ehac)_2(eha)_2 (ehac = 2-ethylhexylammonium carbamate; eha = 2-ethylhexylamine), in IPA, while 1-butyl-3-methylimidazolium-based ionic liquids bearing SbF_6^−, PF_6^− and NTf_2^− 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). KCI Citation Count: 19