Title

An Indium Tin Oxide Electrode Modified With Gold Nanorods For Use In Potential-Controlled Surface Plasmon Resonance Studies

Keywords

Gold nanorod immobilization; Mercury detection; Nanorod electrochemical sensor; Potential-controlled SPR

Abstract

The modification of electrodes with gold nanoparticles results in an increased electrode surface area, enhanced mass transport, and improved catalytic properties. We have extended this approach to indium tin oxide (ITO) electrodes to obtain optically transparent gold nanorod-modified electrodes which display enhanced electrochemical capabilities and have the additional advantage of showing a tunable surface plasmon resonance. The procedures for attaining high surface coverage (15 gold nanorods per square μm) of such electrodes were optimized, and the potential-dependent surface plasmon resonance was studied under controlled electrical potential. In an exemplary sensor application, we demonstrate the detection of mercury via potential-dependent formation of an Au-Hg amalgam. [Figure not available: see fulltext.] © 2013 Springer-Verlag Wien.

Publication Date

8-1-2013

Publication Title

Microchimica Acta

Volume

180

Issue

11-12

Number of Pages

1013-1020

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s00604-013-1017-4

Socpus ID

84881026755 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84881026755

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