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.
- Issue Date
- Jun-2017
- Publisher
- POLSKA AKAD NAUK, POLISH ACAD SCIENCES, INST METALL & MATER SCI PAS
- Keywords
- gold; nanoparticle; non-aqueous electrolyte; pulse wave; catalyst
- Citation
- ARCHIVES OF METALLURGY AND MATERIALS, v.62, no.2, pp 1389 - 1392
- Pages
- 4
- Journal Title
- ARCHIVES OF METALLURGY AND MATERIALS
- Volume
- 62
- Number
- 2
- Start Page
- 1389
- End Page
- 1392
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22555
- DOI
- 10.1515/amm-2017-0214
- ISSN
- 1733-3490
2300-1909
- 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.
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