Electrode reactions of platinum bromide complexes in an amide-type ionic liquid

T. Endo, Yasushi Katayama, T. Miura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The electrode reactions of platinum bromide complexes were investigated in an amide-type room-temperature ionic liquid, 1- butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA). Platinum halides were dissolved in BMPTFSA with addition of halide salts of BMP+. Ultraviolet and visible absorption spectra of electrolytes revealed that the coordination environment of Pt(II) and Pt(IV) were [PtBr4]2-and [PtBr6]2- , respectively. The cyclic voltammogram in BMPTFSA containing 10 mM [PtBr6]2-showed two reduction peaks at -1.2 V and -2.6 V. The diffusion coefficients of the [PtBr 4]2- and [PtBr6]2- were calculated to be 1.5 × 10-7 and 0.49 × 10-7 cm 2 s-1 in BMPTFSA, respectively, by chronoamperometry. Electrodeposition of platinum in BMPTFSA containing 10 mM [PtBr 4]2- was attempted by potentiostatic cathodic reduction at -2.6 V. Nano-particles (2-3 nm in diameter) in the electrolyte after potentiostatic cathodic reduction were observed by transmission electron microscopy. The nano-particles were found to be metallic platinum by electron diffraction.

Original languageEnglish
Title of host publicationECS Transactions
Pages191-197
Number of pages7
Volume50
Edition11
DOIs
Publication statusPublished - 2012
Event18th International Symposium on Molten Salts and Ionic Liquids - 222nd ECS Meeting - Honolulu, HI, United States
Duration: 2012 Oct 72012 Oct 12

Other

Other18th International Symposium on Molten Salts and Ionic Liquids - 222nd ECS Meeting
CountryUnited States
CityHonolulu, HI
Period12/10/712/10/12

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Amides
Ionic liquids
Platinum
Electrodes
Electrolytes
Chronoamperometry
Electrodeposition
Electron diffraction
Absorption spectra
Salts
Transmission electron microscopy
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Electrode reactions of platinum bromide complexes in an amide-type ionic liquid. / Endo, T.; Katayama, Yasushi; Miura, T.

ECS Transactions. Vol. 50 11. ed. 2012. p. 191-197.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Endo, T, Katayama, Y & Miura, T 2012, Electrode reactions of platinum bromide complexes in an amide-type ionic liquid. in ECS Transactions. 11 edn, vol. 50, pp. 191-197, 18th International Symposium on Molten Salts and Ionic Liquids - 222nd ECS Meeting, Honolulu, HI, United States, 12/10/7. https://doi.org/10.1149/05011.0191ecst
Endo, T. ; Katayama, Yasushi ; Miura, T. / Electrode reactions of platinum bromide complexes in an amide-type ionic liquid. ECS Transactions. Vol. 50 11. ed. 2012. pp. 191-197
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