Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths

Yasushi Katayama; Yosuke Oshino; Naoaki Ichihashi; Naoki Tachikawa; Kazuki Yoshii; Kazunobu Toshima

doi:10.1016/j.electacta.2015.02.211

Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths

Yasushi Katayama
, Yosuke Oshino
, Naoaki Ichihashi
, Naoki Tachikawa
, Kazuki Yoshii
, Kazunobu Toshima

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Electrochemical preparation of palladium nanoparticles has been investigated in the bis(trifluoromethylsulfonyl) amide (TFSA^-) ionic liquids composed of 1-butyl-1-methypyrrolidinium (BMP⁺), 1-hexyl-1-methylpyrrolidinium (HMP⁺) and 1-decyl-1-methylpyrrolidinium (DMP⁺) containing [PdBr₄]^2-. Cathodic reduction of [PdBr₄]^2- on a carbon electrode below -2.2 V vs. Ag|Ag(I) in the ionic liquids resulted in formation of palladium nanoparticles, which were confirmed by transmission electron microscopy and electron diffraction. The average particle sizes of the nanoparticles obtained at -2.6 V in BMPTFSA, HMPTFSA and DMPTFSA were 2.9 ± 0.6, 3.0 ± 0.8 and 3.2 ± 0.8 nm, respectively, indicating the average particle size was slightly dependent on the ionic liquid. The nanoparticles dispersed in the ionic liquids are considered to form by inhibition of crystal growth with the organic cations accumulated on the negatively polarized electrode surface.

Original language	English
Pages (from-to)	37-41
Number of pages	5
Journal	Electrochimica Acta
Volume	183
DOIs	https://doi.org/10.1016/j.electacta.2015.02.211
Publication status	Published - 2015 Nov 20

Keywords

electrodeposition
ionic liquid
nanoparticle
palladium

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2015.02.211

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@article{5a22705296f840dfbd8b033a6fcf6d35,

title = "Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths",

abstract = "Electrochemical preparation of palladium nanoparticles has been investigated in the bis(trifluoromethylsulfonyl) amide (TFSA-) ionic liquids composed of 1-butyl-1-methypyrrolidinium (BMP+), 1-hexyl-1-methylpyrrolidinium (HMP+) and 1-decyl-1-methylpyrrolidinium (DMP+) containing [PdBr4]2-. Cathodic reduction of [PdBr4]2- on a carbon electrode below -2.2 V vs. Ag|Ag(I) in the ionic liquids resulted in formation of palladium nanoparticles, which were confirmed by transmission electron microscopy and electron diffraction. The average particle sizes of the nanoparticles obtained at -2.6 V in BMPTFSA, HMPTFSA and DMPTFSA were 2.9 ± 0.6, 3.0 ± 0.8 and 3.2 ± 0.8 nm, respectively, indicating the average particle size was slightly dependent on the ionic liquid. The nanoparticles dispersed in the ionic liquids are considered to form by inhibition of crystal growth with the organic cations accumulated on the negatively polarized electrode surface.",

keywords = "electrodeposition, ionic liquid, nanoparticle, palladium",

author = "Yasushi Katayama and Yosuke Oshino and Naoaki Ichihashi and Naoki Tachikawa and Kazuki Yoshii and Kazunobu Toshima",

note = "Funding Information: The authors are grateful to financial support by MEXT -Supported Program for the Strategic Research Foundation at Private Universities, 2012-2016. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",

year = "2015",

month = nov,

day = "20",

doi = "10.1016/j.electacta.2015.02.211",

language = "English",

volume = "183",

pages = "37--41",

journal = "Electrochimica Acta",

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TY - JOUR

T1 - Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths

AU - Katayama, Yasushi

AU - Oshino, Yosuke

AU - Ichihashi, Naoaki

AU - Tachikawa, Naoki

AU - Yoshii, Kazuki

AU - Toshima, Kazunobu

N1 - Funding Information: The authors are grateful to financial support by MEXT -Supported Program for the Strategic Research Foundation at Private Universities, 2012-2016. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved.

PY - 2015/11/20

Y1 - 2015/11/20

N2 - Electrochemical preparation of palladium nanoparticles has been investigated in the bis(trifluoromethylsulfonyl) amide (TFSA-) ionic liquids composed of 1-butyl-1-methypyrrolidinium (BMP+), 1-hexyl-1-methylpyrrolidinium (HMP+) and 1-decyl-1-methylpyrrolidinium (DMP+) containing [PdBr4]2-. Cathodic reduction of [PdBr4]2- on a carbon electrode below -2.2 V vs. Ag|Ag(I) in the ionic liquids resulted in formation of palladium nanoparticles, which were confirmed by transmission electron microscopy and electron diffraction. The average particle sizes of the nanoparticles obtained at -2.6 V in BMPTFSA, HMPTFSA and DMPTFSA were 2.9 ± 0.6, 3.0 ± 0.8 and 3.2 ± 0.8 nm, respectively, indicating the average particle size was slightly dependent on the ionic liquid. The nanoparticles dispersed in the ionic liquids are considered to form by inhibition of crystal growth with the organic cations accumulated on the negatively polarized electrode surface.

AB - Electrochemical preparation of palladium nanoparticles has been investigated in the bis(trifluoromethylsulfonyl) amide (TFSA-) ionic liquids composed of 1-butyl-1-methypyrrolidinium (BMP+), 1-hexyl-1-methylpyrrolidinium (HMP+) and 1-decyl-1-methylpyrrolidinium (DMP+) containing [PdBr4]2-. Cathodic reduction of [PdBr4]2- on a carbon electrode below -2.2 V vs. Ag|Ag(I) in the ionic liquids resulted in formation of palladium nanoparticles, which were confirmed by transmission electron microscopy and electron diffraction. The average particle sizes of the nanoparticles obtained at -2.6 V in BMPTFSA, HMPTFSA and DMPTFSA were 2.9 ± 0.6, 3.0 ± 0.8 and 3.2 ± 0.8 nm, respectively, indicating the average particle size was slightly dependent on the ionic liquid. The nanoparticles dispersed in the ionic liquids are considered to form by inhibition of crystal growth with the organic cations accumulated on the negatively polarized electrode surface.

KW - electrodeposition

KW - ionic liquid

KW - nanoparticle

KW - palladium

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U2 - 10.1016/j.electacta.2015.02.211

DO - 10.1016/j.electacta.2015.02.211

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VL - 183

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JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Electrochemical preparation of palladium nanoparticles in bis(trifluoromethylsulfonyl)amide ionic liquids consisting of pyrrolidinium cations with different alkyl chain lengths

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Keywords

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