Structure of [C(4)mpyr][NTf2] room-temperature ionic liquid at charged gold interfaces
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Date
2012-05-15
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
The structure of 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C4mpyr][NTf2]) room-temperature ionic liquid at an electrified gold interface was studied using neutron reflectometry, cyclic voltammetry, and differential capacitance measurements. Subtle differences were observed between the reflectivity data collected on a gold electrode at three different applied potentials. Detailed analysis of the fitted reflectivity data reveals an excess of [C4mpyr]+ at the interface, with the amount decreasing at increasingly positive potentials. A cation rich interface was found even at a positively charged electrode, which indicates a nonelectrostatic (specific) adsorption of [C4mpyr]+ onto the gold electrode. © 2012, American Chemical Society
Description
Keywords
Molten salts, Spectroscopy, Electrodeposition, Reflectivity, Scattering, Gold
Citation
Lauw, Y., Horne, M. D., Rodopoulos, T., Lockett, V., Akgun, B., Hamilton, W. A., & Nelson, A. R. J. (2012). Structure of [C(4)mpyr][NTf2] room-temperature ionic liquid at charged gold interfaces. Langmuir, 28(19), 7374-7381. doi:10.1021/la3005757