The preparation and electrochemical properties of nanostructured nickel hexacyanoruthenate deposited on multiwalled carbon nanotubes

A novel class of hybrid material was obtained by formation of nanostructured nickel hexacyanoruthenate (NiHCRu) on multiwalled carbon nanotubes (MWNTs). The method used in the electrode preparation gives reproducible deposits with well controlled quantity of the electroactive component. The composit...

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Bibliographic Details
Published in:	Electrochimica acta Vol. 58; pp. 474 - 480
Main Authors:	Kietlińska, Paulina, Królikowski, Maciej, Dobrzeniecka, Anna, Jurczakowski, Rafał, Miecznikowski, Krzysztof, Rutkowska, Iwona A., Stroka, Jadwiga, Kulesza, Paweł J., Galus, Zbigniew
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier Ltd 30-12-2011 Elsevier
Subjects:	Carbon nanotubes Chemistry Deposition Electrochemistry Electrodes Exact sciences and technology General and physical chemistry Hexacyanoruthenate Morphology Multi wall carbon nanotubes Nanocomposites Nanomaterials Nanostructure Nanostructured materials Nickel Study of interfaces Switched ion exchange processes Transport phenomena Carbon nanotubes Switched ion exchange processes Hexacyanoruthenate Nanostructured materials Nickel Complexes Nanostructure Transition metal Complexes Carbon Cyano complex Electrodes Transport process Electrochemical properties Multiwalled nanotube Preparation Heteronuclear complex Cesium Ions Ruthenium Complexes Platinoid Complexes Redox system Ion exchange Charge transfer Glassy state Modified material
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Summary:	A novel class of hybrid material was obtained by formation of nanostructured nickel hexacyanoruthenate (NiHCRu) on multiwalled carbon nanotubes (MWNTs). The method used in the electrode preparation gives reproducible deposits with well controlled quantity of the electroactive component. The composition of the formed layers was studied using XPS measurements while the morphology of the deposit was investigated with the aid of electron microscopy. TEM micrographs revealed detailed morphology of the nanostructrured material formed on the surface of the MWNTs. The obtained films were characterized by good stability and fast electron transfer reaction of the [Ru(CN) 6] 3−/[Ru(CN) 6] 4− system in the presence of Na +, NH 4 +, K + and Rb +. The charge diffusion coefficient was estimated to be 3.4 × 10 −8 cm 2 s −1. Composite electrode exhibited a high affinity to Cs + cations even in the presence of 10 4 excess in concentration of sodium ions. The results point that the nanocomposite film may be successfully used for removing of cesium ions from its aqueous solutions throughout an electrically switched ion exchange process.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0013-4686 1873-3859
DOI:	10.1016/j.electacta.2011.09.072