An indium tin oxide electrode modified with gold nanorods for use in potential-controlled surface plasmon resonance studies

被引：4

作者：

Heider, Emily C. ^{[1
]}

Trieu, Khang ^{[1
]}

Diaz, Victor M. ^{[1
]}

Chumbimuni-Torres, Karin Y. ^{[1
]}

Campiglia, Andres D. ^{[1
]}

Duranceau, Steven J. ^{[2
]}

机构：

[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

[2] Univ Cent Florida, Civil Construct & Environm Engn Dept, Orlando, FL 32816 USA

来源：

MICROCHIMICA ACTA | 2013年 / 180卷 / 11-12期

关键词：

Gold nanorod immobilization; Potential-controlled SPR; Nanorod electrochemical sensor; Mercury detection; ENHANCED RAMAN-SCATTERING; ITO ELECTRODE; NANOPARTICLES; FABRICATION; SENSOR;

D O I：

10.1007/s00604-013-1017-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 A mu m) 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.

引用

页码：1013 / 1020

页数：8

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