Electrodeposition of palladium in a hydrophobic 1-n-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) imide room-temperature ionic liquid

被引：67

作者：

Bando, Yuri ^{[1
]}

Katayama, Yasushi ^{[1
]}

Miura, Takashi ^{[1
]}

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

ELECTROCHIMICA ACTA | 2007年 / 53卷 / 01期

关键词：

ionic liquid; 1-n-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide; palladium; electrodeposition; electroplating;

D O I：

10.1016/j.electacta.2007.02.074

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical reduction of palladium halide complexes such as PdBr42- and PdCl42- was investigated in a hydrophobic room-temperature ionic liquid (RTIL), 1-n-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI). The irreversible electrode reaction between Pd(II) and Pd(0) was observed in BMPTFSI containing PdBr42- or PdCl42- by cyclic voltammetry. The diffusion coefficient of PdBr42- was estimated to be (1-2) x 10(-7) cm(2) s(-1) by choronopotentiometry and chronoamperometry. The deposition of crystalline Pd metal was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. It was suggested by the chronoamperometric measurements on PdBr42- in BMPTFSI that the initial stage of the electrodeposition of Pd on the polycrystalline Pt electrode surface involves three-dimensional progressive nucleation under diffusion control. The reduction potential of PdCl42- was more negative than that of PdBr42-, reflecting the difference in the donor property between chloride and bromide. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：87 / 91

页数：5

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