Electrochemical Characterisation of Nanoscale Liquid|Liquid Interfaces Located at Focused Ion Beam-Milled Silicon Nitride Membranes

Autor:	Gregor Neusser, Damien W. M. Arrigan, Nigel Chen-Tan, Masniza Sairi, Christine Kranz
Rok vydání:	2014
Předmět:	Materials science Nanostructure Nanoelectrochemistry business.industry Limiting current Nanotechnology Focused ion beam Catalysis chemistry.chemical_compound Nanopore Membrane Silicon nitride chemistry Electrochemistry Optoelectronics business Nanoscopic scale
Zdroj:	ChemElectroChem. 2:98-105
ISSN:	2196-0216
DOI:	10.1002/celc.201402252
Popis:	The electrochemical behaviour of single and arrayed nanoscale interfaces between two immiscible electrolyte solutions (single and array nanoITIES) is presented. The interfaces were formed at nanopores fabricated through the focused ion beam (FIB) milling of silicon nitride (SiN) membranes by using nanopores with approximately 30–80 nm radii and with pore-to-pore separations to pore radius ratios in the range of 16–32. Electrochemistry was performed through the interfacial transfer of tetrapropylammonium (TPrA+) across single and array nanoITIES between water and 1,6-dichlorohexane. The ion-transfer limiting current at the single nanoITIES was in excellent agreement with the current predicted by using an inlaid disc interface model. At nanoITIES arrays, experimental currents were lower than predicted for an array of inlaid interfaces, which is attributed to overlapped diffusion zones. As a result, FIB milling offers an attractive strategy to form nanoITIES for diverse investigations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b6bacd971b6b5fba3de8e2076eca7ecc https://doi.org/10.1002/celc.201402252 Zobrazit plný text záznamu Plný text