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- Title
RAPID SYNTHESIS OF GOLD NANO-PARTICLES USING PULSE WAVED POTENTIAL IN A NON-AQUEOUS ELECTROLYTE.
- Authors
JANG, J. G.; LEE, J.-O.; LEE, C. K.
- Abstract
Rapid synthesis of gold nanoparticles (AuNPs) by pulsed electrodeposition was investigated in the non-aqueous electrolyte, 1-ethyl-3-methyl-imidazoliumbis(trifluoro-methanesulfonyl)imide ([EMIM]TFSI) with gold trichloride (AuCl3). To aid the dissolution of AuCl3, 1-ethyl-3-methyl-imidazolium chloride ([EMIM]Cl) was used as a supporting electrolyte in [EMIM]TFSI. Cyclic voltammetry experiments revealed a cathodic reaction corresponding to the reduction of gold at -0.4 V vs. Pt-QRE. To confirm the electrodeposition process, potentiostatic electrodeposition of gold in the non-aqueous electrolyte was conducted at -0.4 V for 1 h at room temperature. To synthesize AuNPs, pulsed electrodeposition was conducted with controlled duty factor, pulse duration, and overpotential. The composition, particle-size distribution, and morphology of the AuNPs were confirmed by field-emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). The electrodeposited AuNPs were uniformly distributed on the platinum electrode surface without any impurities arising from the non-aqueous electrolyte. The size distribution of AuNPs could be also controlled by the electrodeposition conditions.
- Subjects
GOLD nanoparticle synthesis; ELECTROPLATING; SOLITONS; NONAQUEOUS electrolytes; CHEMICAL vapor deposition
- Publication
Archives of Metallurgy & Materials, 2017, Vol 62, Issue 2, p1389
- ISSN
1733-3490
- Publication type
Article
- DOI
10.1515/amm-2017-0214