Controlled electrocatalysis by microperoxidase-11 and Au-nanoparticle superstructures on conductive supports

被引：99

作者：

Patolsky, F ^{[1
]}

Gabriel, T ^{[1
]}

Willner, I ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 479卷 / 01期

关键词：

nanoparticles; electrocatalysis; modified electrodes; Au-colloids; microperoxidase;

D O I：

10.1016/S0022-0728(99)00426-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Three-dimensional superstructures, multilayer-arrays consisting of Au-nanoparticles (13 +/- 1 nm) and crosslinked by microperoxidase-11 (MP-11), were assembled on transparent ITO conductive glass supports. The structures of the assemblies were confirmed by spectroscopic and electrochemical analyses, which revealed that each Au-particle is associated with ca. 50 MP-11 molecules. The multilayered MP-11/Au-particle systems act as electrocatalysts for the reduction of H2O2. The number of MP-11 / Au-particle layers associated with the electrode controls the resulting electrocatalytic currents. The controllable number of MP-11 / Au-particle layers associated with the electrode enables the control of the effectiveness of the electrocatalytic process and tuning of the sensitivity of the H2O2-sensing interface. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：69 / 73

页数：5

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