Direct Transformation into Silver Nanoparticles via Thermal Decomposition of Oxalate-Bridging Silver Oleylamine Complexes

Authors: Itoh, Mitsunori; Kakuta, Takayoshi; Nagaoka, Minami; Koyama, Yumiko; Sakamoto, Masatomi; Kawasaki, Shuji; Umeda, Naoki; Kurihara, Masato

Source: Journal of Nanoscience and Nanotechnology, Volume 9, Number 11, November 2009 , pp. 6655-6660(6)

Publisher: American Scientific Publishers

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Abstract:

Silver(I)oxalate, Ag2(C2O4), reacts with two equivalents of oleylamine (Ag:oleylamine = 1:1 mole/mole) to form an oxalate-bridged silver-oleylamine complex, [(oleylamine)Ag(-C2O4)Ag(oleylamine)]. The precursor complex is thermally decomposed at ∼150 °C with CO2 evolution to produce Ag nanoparticles with ∼11 nm dimension. The Ag nanoparticles contain ∼12 wt% of oleylamines as the surface stabilizer. In the synthetic mechanism, the oxalate ligand acts as a two-electron reducing agent. The precursor complex is directly transformed into oleylamine-stabilized Ag nanoparticles in high yields of more than 80% without any additional synthetic organic solvents and reducing agents.

Keywords: AUTO REDOX REACTION; OLEYLAMINE; OXALATE COMPLEX; SILVER NANOPARTICLE; THERMAL DECOMPOSITION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.1324

Publication date: November 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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