An Electrochemical Dopamine Sensor Based on the ZnO/CuO Nanohybrid Structures

被引：29

作者：

Khun, K. ^{[1
]}

Ibupoto, Z. H. ^{[1
]}

Liu, X. ^{[2
]}

Mansor, N. A. ^{[3
]}

Turner, A. P. F. ^{[3
]}

Beni, V. ^{[3
]}

Willander, M. ^{[1
]}

机构：

[1] Linkoping Univ, Dept Sci & Technol, Div Phys Elect & Nanotechnol, S-60174 Norrkoping, Sweden

[2] Linkoping Univ, Dept Phys Chem & Biol IFM, S-58183 Linkoping, Sweden

[3] Linkoping Univ, Dept Phys Chem & Biol IFM, Biosensors & Bioelect Ctr, S-58183 Linkoping, Sweden

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 14卷 / 09期

关键词：

Dopamine; ZnO/CuO Nanohybrid Structures; Cyclic Voltammetry; Amperometry; GLASSY-CARBON ELECTRODE; ASCORBIC-ACID; SONOCHEMICAL SYNTHESIS; SELECTIVE DETECTION; HYDROGEN-PEROXIDE; BIOSENSOR; NANOPARTICLES; FILM; ZNO; HEXACYANOFERRATE;

D O I：

10.1166/jnn.2014.9367

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The selective detection of dopamine (DA) is of great importance in the modern medicine because dopamine is one of the main regulators in human behaviour. In this study, ZnO/CuO nanohybrid structures, grown on the gold coated glass substrate, have been investigated as a novel electrode material for the electrochemical detection of dopamine. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques were used for the material characterization and the obtained results are in good agreement. The selective determination of dopamine was demonstrated by cyclic voltammetry (CV) and amperometric experiments. The amperometric response was linear for dopamine concentrations between 1.0 x 10(-3) and 8.0 mM with a sensitivity of 90.9 mu A mM(-1) cm(-2). The proposed dopamine biosensor is very stable, selective over common interferents as glucose, uric acid and ascorbic acid, and also good reproducibility was observed for seven electrodes. Moreover, the dopamine sensor exhibited a fast response time of less than 10 s. The wide range and acceptable sensitivity of the presented dopamine sensor provide the possible application in analysing the dopamine from the real samples.

引用

页码：6646 / 6652

页数：7