Nanoporous Gold Leaf for Amperometric Determination of Nitrite

被引：42

作者：

Ge, Xingbo ^{[1
]}

Wang, Liqin ^{[1
]}

Liu, Zhaona ^{[1
]}

Ding, Yi ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

ELECTROANALYSIS | 2011年 / 23卷 / 02期

基金：

美国国家科学基金会;

关键词：

Nanoporous gold; Nitrite determination; Sensor; Dealloying; Amperometric; ELECTROCATALYTIC OXIDATION; CARBON ELECTRODE; NITRATE; REDUCTION; CORROSION; PERFORMANCE; METALS; OXYGEN; STEEL; WATER;

D O I：

10.1002/elan.201000320

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ultra-thin free-standing nanoporous gold leaf made by dealloying exhibits excellent electrocatalytic activities toward nitrite oxidation. The electrochemical responses of nitrite ions on this novel nano-electrode is found not dependent on pH over a wide range from 4.5 to 8.0, which is markedly different from that of gold oxidation, a process known to be highly pH-sensitive. Amperometric study shows a linear relationship for nitrite determination in a concentration range from 1 mu M to 1 mM. This nanostructured gold electrode displays good stability, repeatability and selectivity which suggests its potential for the development of new electrochemical sensors.

引用

页码：381 / 386

页数：6

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