Ionic liquid-stabilized non-spherical gold nanofluids synthesized using a one-step method
1 Laboratory on Steam Power System, Wuhan Second Ship Design and Research Institute, Wuhan, Hubei, 430064, People’s Republic of China
2 CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China
Citation and License
Nanoscale Research Letters 2012, 7:583 doi:10.1186/1556-276X-7-583Published: 23 October 2012
Ionic liquid (IL)-stabilized non-spherical gold nanofluids have been synthesized by a one-step method in aqueous solution. The whole reaction proceeded in room temperature. In the presence of amino-functionalized ionic liquids, gold nanofluids with long-wave surface plasmon resonance (SPR) absorption (>600 nm) could be obtained by adopting tannic acid as the reductant. The specific SPR absorption was related to the non-spherical gold nanoparticles including gold triangle, decahedra, and icosahedra nanocrystals. All the nanocrystals were observed by transmission electron microscopy. It was deduced that the formation of non-spherical gold nanofluids was related to the hydroxyls in tannic acid while IL acted as the synthesis template.