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Formation of mesoscopic silver particles at micro- and nano-liquid/liquid interfaces
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UNSPECIFIED (2003) Formation of mesoscopic silver particles at micro- and nano-liquid/liquid interfaces. ELECTROCHEMISTRY COMMUNICATIONS, 5 (12). pp. 1005-1010. doi:10.1016/j.elecom.2003.09.012 ISSN 1388-2481.
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Official URL: http://dx.doi.org/10.1016/j.elecom.2003.09.012
Abstract
Silver particles have been deposited at externally polarised 1,2-dichloroethane (DCE)/water interfaces supported at the tip of micro- and nanopipettes. The electrochemical process involved the reduction of silver ion in the aqueous phase by an organic-phase electron donor (butylferrocene). The silver nucleation and growth process was investigated using potential step chronoamperometry, and the resulting current-time transients were analysed to extract nucleus numbers. At larger pipettes, with diameters of several micrometers, multi-particle nucleation was observed and optical microscopy provided direct evidence for metal electrodeposition at the liquid/liquid interface. For pipettes with radii of 0.5 mum or smaller, the current-time behaviour was consistent with single particle generation. Under some conditions, detachment of the particle from the liquid/liquid interface was inferred from the current-time characteristics. and it is suggested that controlled-detachment from micropipettes could provide a method for the deposition of small metal structures on surfaces. (C) 2003 Elsevier B.V. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | ELECTROCHEMISTRY COMMUNICATIONS | ||||
Publisher: | ELSEVIER SCIENCE INC | ||||
ISSN: | 1388-2481 | ||||
Official Date: | December 2003 | ||||
Dates: |
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Volume: | 5 | ||||
Number: | 12 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 1005-1010 | ||||
DOI: | 10.1016/j.elecom.2003.09.012 | ||||
Publication Status: | Published |
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