Electrochemical Sensing of Hydrogen Peroxide Using Block Copolymer Templated Iron Oxide Nanopatterns

被引：46
作者：
Bas, Salih Z. [1 ]
Cummins, Cian [2 ,3 ]
Borah, Dipu [2 ,3 ]
Ozmen, Mustafa [1 ]
Morris, Michael A. [2 ,3 ]
机构：
[1] Selcuk Univ, Dept Chem, TR-42075 Konya, Turkey
[2] Trinity Coll Dublin, AMBER Ctr, Dublin 2, Ireland
[3] Trinity Coll Dublin, CRANN, Dublin 2, Ireland
来源：
ANALYTICAL CHEMISTRY | 2018年 / 90卷 / 02期
基金：
爱尔兰科学基金会;
关键词：
PLATINUM NANOPARTICLES; CARBON NANOTUBES; GLUCOSE-OXIDASE; MODIFIED ELECTRODES; COMPOSITE; IMMOBILIZATION; SILVER; H2O2; NANOSTRUCTURES; NANOCOMPOSITE;
D O I：
10.1021/acs.analchem.7b03244
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new enzyme-free sensor based on iron oxide (Fe3O4) nanodots fabricated on an indium tin oxide (ITO) substrate via a block copolymer template was developed for highly sensitive and selective detection of hydrogen peroxide (H2O2). The self-assembly-based process described here for Fe3O4 formation is a simple, cost-effective, and reproducible process. The H2O2 response of the fabricated electrodes was linear from 2.5 X 10(-3) to 6.5 InIVI with a sensitivity of 191.6 /IA rnM cm(-2) and a detection limit of 1.1 x 10(-3) mM. The electrocatalytic activity of Fe3O4 nanodots toward the electroreduction of H2O2 was described by cyclic voltammetric and amperometric techniques. The sensor described here has a strong anti -interference ability to a variety of common biological and inorganic substances.
引用
收藏
页码：1122 / 1128
页数：7
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