Synthesis of Fe3O4-Ag nanocomposites and their application to enzymeless hydrogen peroxide detection

被引：12

作者：

Qi, Cheng-Cheng ^{[1
]}

Zheng, Jian-Bin ^{[1
]}

机构：

[1] Northwest Univ Xian, Inst Analyt Sci, Shaanxi Prov Key Lab Electroanalyt Chem, Xian 710069, Shaanxi, Peoples R China

来源：

CHEMICAL PAPERS | 2016年 / 70卷 / 04期

基金：

美国国家科学基金会;

关键词：

silver nanoparticles; ferroferric oxide; hydrogen peroxide; nonenzymatic sensor; GLASSY-CARBON ELECTRODE; AG NANOPARTICLES; SILVER NANOPARTICLES; COMPOSITE FILM; SENSOR; H2O2; NANOTUBES;

D O I：

10.1515/chempap-2015-0224

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To achieve highly sensitive nonenzymatic detection of H2O2, a novel electrochemical sensor based on Fe3O4-Ag nanocomposites was developed. Nanocomposites were synthesized by reducing [Ag(NH3)(2)](+) at the gas/liquid interface in the presence of silver seeds and confirmed by transmission electron microscopy and X-ray diffractometry. Electrochemical investigations indicate that the sensor is able to detect H2O2 within a wide linear range of 0.5 mu M to 4.0 mM, sensitivity of 135.4 mu A mM(-1) cm(-2) and low detection limit of 0.2 mu M (S/N = 3). Additionally, the sensor exhibits good anti-interference ability, stability and repeatability. These results show that the Fe3O4-Ag nanocomposite is a promising electrocatalytic material for sensors construction. (C) 2015 Institute of Chemistry, Slovak Academy of Sciences

引用

页码：404 / 411

页数：8

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