Growth of Gold Nanosheets and Nanopolyhedra in Pyrrolidinium-Based Ionic Liquids: Investigation of the Cation Effect on the Resulting Morphologies

Journal Article · Fri Jan 01 00:00:00 EST 2010 · Crystal Growth & Design

DOI:https://doi.org/10.1021/cg9013575· OSTI ID:1044698

Bouvy, Claire ^[1]; Baker, Gary A ^[1]; Yin, Hongfeng ^[1]; Dai, Sheng ^[1]

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1. ORNL

Large gold nanosheets and small gold polyhedra have been successfully synthesized in room-temperature ionic liquids (ILs) by an ionothermal reduction of HAuCl{sub 4} under N{sub 2} atmosphere, without using any additives. The effect of the organic cation on the final morphologies of the gold particles has been studied, and a series of pyrrolidinium-, imidazolium-, and quaternary amine-based ionic liquids have been investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) measurements. Our results show that these ILs favor the anisotropic growth of gold by acting as template agents and that only gold microspheres can be obtained with the IL containing a reductive functionality.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1044698
• Journal Information: Crystal Growth & Design, Vol. 10, Issue 3; ISSN 1528-7483
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADDITIVES
CATIONS
GOLD
MICROSPHERES
MOLTEN SALTS
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION