Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid

Shimul Saha; Takuho Taguchi; Naoki Tachikawa; Kazuki Yoshii; Yasushi Katayama

doi:10.1016/j.electacta.2015.05.018

Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid

Shimul Saha, Takuho Taguchi, Naoki Tachikawa, Kazuki Yoshii, Yasushi Katayama

Department of Applied Chemistry

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

13 Citations (Scopus)

Abstract

Electrodeposition of cadmium (Cd) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide (BMPTFSA) containing Cd(TFSA)₂ as a Cd source with cyclic voltammetry and chronoamperometry on a glassy carbon electrode. The infrared spectroscopy showed Cd(II) in BMPTFSA is octahedrally coordinated with three TFSA^-. Electrochemical reduction of Cd(II) to Cd(0) was suggested to be an electrochemically irreversible process involving 2 one-electron transfer steps. The diffusion coefficient of Cd(II) at 25 °C was estimated to be 0.95 × 10^-7 cm² s^-1. Electrodeposits obtained by galvanostatic and potentiostatic electrolysis were confirmed to be metallic Cd by X-ray diffraction and energy dispersive X-ray analysis. The nucleation process and the surface morphology of the electrodeposited Cd were found to depend on the applied potential, probably due to the change in the electric double layer structure by accumulation of BMP⁺ at the negatively polarized electrode surface. Furthermore, Cd nanoparticles were obtained in the ionic liquid by potentiostatic cathodic reduction at -2.6 V vs. Ag/Ag(I).

Original language	English
Pages (from-to)	42-48
Number of pages	7
Journal	Electrochimica Acta
Volume	183
DOIs	https://doi.org/10.1016/j.electacta.2015.05.018
Publication status	Published - 2015 Nov 20

Keywords

Cadmium
Electrodeposition
Ionic liquid
Morphology
Nanoparticle

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2015.05.018

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title = "Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid",

abstract = "Electrodeposition of cadmium (Cd) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide (BMPTFSA) containing Cd(TFSA)2 as a Cd source with cyclic voltammetry and chronoamperometry on a glassy carbon electrode. The infrared spectroscopy showed Cd(II) in BMPTFSA is octahedrally coordinated with three TFSA-. Electrochemical reduction of Cd(II) to Cd(0) was suggested to be an electrochemically irreversible process involving 2 one-electron transfer steps. The diffusion coefficient of Cd(II) at 25 °C was estimated to be 0.95 × 10-7 cm2 s-1. Electrodeposits obtained by galvanostatic and potentiostatic electrolysis were confirmed to be metallic Cd by X-ray diffraction and energy dispersive X-ray analysis. The nucleation process and the surface morphology of the electrodeposited Cd were found to depend on the applied potential, probably due to the change in the electric double layer structure by accumulation of BMP+ at the negatively polarized electrode surface. Furthermore, Cd nanoparticles were obtained in the ionic liquid by potentiostatic cathodic reduction at -2.6 V vs. Ag/Ag(I).",

keywords = "Cadmium, Electrodeposition, Ionic liquid, Morphology, Nanoparticle",

author = "Shimul Saha and Takuho Taguchi and Naoki Tachikawa and Kazuki Yoshii and Yasushi Katayama",

note = "Funding Information: A part of this work was financially supported by Keio Leading-edge Laboratory of Science and Technology (KLL). Part of this study was financially supported by MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2012-2016. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "2015",

month = nov,

day = "20",

doi = "10.1016/j.electacta.2015.05.018",

language = "English",

volume = "183",

pages = "42--48",

journal = "Electrochimica Acta",

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T1 - Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid

AU - Saha, Shimul

AU - Taguchi, Takuho

AU - Tachikawa, Naoki

AU - Yoshii, Kazuki

AU - Katayama, Yasushi

N1 - Funding Information: A part of this work was financially supported by Keio Leading-edge Laboratory of Science and Technology (KLL). Part of this study was financially supported by MEXT-Supported Program for the Strategic Research Foundation at Private Universities, 2012-2016. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2015/11/20

Y1 - 2015/11/20

N2 - Electrodeposition of cadmium (Cd) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide (BMPTFSA) containing Cd(TFSA)2 as a Cd source with cyclic voltammetry and chronoamperometry on a glassy carbon electrode. The infrared spectroscopy showed Cd(II) in BMPTFSA is octahedrally coordinated with three TFSA-. Electrochemical reduction of Cd(II) to Cd(0) was suggested to be an electrochemically irreversible process involving 2 one-electron transfer steps. The diffusion coefficient of Cd(II) at 25 °C was estimated to be 0.95 × 10-7 cm2 s-1. Electrodeposits obtained by galvanostatic and potentiostatic electrolysis were confirmed to be metallic Cd by X-ray diffraction and energy dispersive X-ray analysis. The nucleation process and the surface morphology of the electrodeposited Cd were found to depend on the applied potential, probably due to the change in the electric double layer structure by accumulation of BMP+ at the negatively polarized electrode surface. Furthermore, Cd nanoparticles were obtained in the ionic liquid by potentiostatic cathodic reduction at -2.6 V vs. Ag/Ag(I).

AB - Electrodeposition of cadmium (Cd) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide (BMPTFSA) containing Cd(TFSA)2 as a Cd source with cyclic voltammetry and chronoamperometry on a glassy carbon electrode. The infrared spectroscopy showed Cd(II) in BMPTFSA is octahedrally coordinated with three TFSA-. Electrochemical reduction of Cd(II) to Cd(0) was suggested to be an electrochemically irreversible process involving 2 one-electron transfer steps. The diffusion coefficient of Cd(II) at 25 °C was estimated to be 0.95 × 10-7 cm2 s-1. Electrodeposits obtained by galvanostatic and potentiostatic electrolysis were confirmed to be metallic Cd by X-ray diffraction and energy dispersive X-ray analysis. The nucleation process and the surface morphology of the electrodeposited Cd were found to depend on the applied potential, probably due to the change in the electric double layer structure by accumulation of BMP+ at the negatively polarized electrode surface. Furthermore, Cd nanoparticles were obtained in the ionic liquid by potentiostatic cathodic reduction at -2.6 V vs. Ag/Ag(I).

KW - Cadmium

KW - Electrodeposition

KW - Ionic liquid

KW - Morphology

KW - Nanoparticle

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JF - Electrochimica Acta

ER -

Electrochemical Behavior of Cadmium in 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Room-temperature Ionic Liquid

Abstract

Keywords

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