Voltammetric detection of synthetic water-soluble phenolic antioxidants using carbon nanotube based electrodes

被引：40

作者：

Ziyatdinova, Guzel ^{[1
]}

Gainetdinova, Aliya ^{[1
]}

Morozov, Mikhail ^{[2
]}

Budnikov, Herman ^{[1
]}

Grazhulene, Svetlana ^{[3
]}

Red'kin, Arkady ^{[4
]}

机构：

[1] Kazan Volga Reg Fed Univ, Dept Analyt Chem, Kazan 420008, Russia

[2] Kazan Volga Reg Fed Univ, Dept Phys, Kazan 420008, Russia

[3] Russian Acad Sci, Inst Microelect Technol & High Pur Mat, Chernogolovka 142432, Russia

[4] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 01期

关键词：

Carbon nanotubes; Chemically modified electrodes; Voltammetry; Synthetic antioxidants; Phenols; AMPEROMETRIC DETERMINATION; ELECTROCHEMICAL OXIDATION; CATECHOL; BIOSENSOR; FLAVONOIDS; TYROSINASE; SENSOR;

D O I：

10.1007/s10008-011-1295-x

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Glassy carbon electrodes (GCE) modified with carbon nanotubes (CNT) have been created for detection of phenolic compounds-one of the important group of antioxidants in life sciences. The surface of electrode has been characterized by atomic force microscopy. The presence of CNT leads to an at least 20-fold increase in the surface roughness of the electrode. The CNT layer displays closely intertwined vermicular structures with high degree of homogeneity at CNT suspension concentration of 0.2-0.5 mg L-1. Synthetic water-soluble antioxidants (hydroquinone, catechol, pyrogallol, and their derivatives) are electrochemically active on bare GCE and CNT-modified GCE in phosphate buffer solution pH 7.4. Effect of substitutes in molecular structure of phenolic antioxidants has been evaluated. In several cases, oxidation at CNT-modified GCE occurs at potentials that are less positive by 100-200 mV in comparison to bare GCE. The electrodes were studied with respect to their capability of phenols voltammetric sensing. CNT-modified GCE display an enlarged linear range in the calibration graphs and lower detection limits. Voltammetric method for determination of hydroquinone, catechol, pyrogallol, and their derivatives has been developed.

引用

页码：127 / 134

页数：8

共 30 条

[11] Amperometric biosensors based on recombinant laccases for phenols determination [J].

Kulys, J ;

Vidziunaite, R .

BIOSENSORS & BIOELECTRONICS, 2003, 18 (2-3) :319-325

[12] Sensitive and rapid determination of catechol in tea samples using mesoporous Al-doped silica modified electrode [J].

Lin, Huogang ;

Gan, Tian ;

Wu, Kangbing .

FOOD CHEMISTRY, 2009, 113 (02) :701-704

[13] A phenol biosensor based on immobilizing tyrosinase to modified core-shell magnetic nanoparticles supported at a carbon paste electrode [J].

Liu, ZM ;

Liu, YL ;

Yang, HF ;

Yang, Y ;

Shen, GL ;

Yu, RQ .

ANALYTICA CHIMICA ACTA, 2005, 533 (01) :3-9

[14] Improvement of the electrochemical detection of catechol by the use of a carbon nanotube based biosensor [J].

Lopez, B. Perez ;

Merkoci, A. .

ANALYST, 2009, 134 (01) :60-64

[15] Low-potential stable NADH detection at carbon-nanotube-modified glassy carbon electrodes [J].

Musameh, M ;

Wang, J ;

Merkoci, A ;

Lin, YH .

ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (10) :743-746

[16] Electrochemical Characterization of Epigallocatechin Gallate Using Square-Wave Voltammetry [J].

Novak, Ivana ;

Seruga, Marijan ;

Komorsky-Lovric, Sebojka .

ELECTROANALYSIS, 2009, 21 (09) :1019-1025

[17]

Pospisil J., 1989, Oxidation inhibition in organic materials, V1

[18] Synthesis of fibrous carbon nanomaterials from ethanol vapor on a nickel catalyst [J].

Red'kin, AN ;

Kipin, VA ;

Malyarevich, LV .

INORGANIC MATERIALS, 2006, 42 (03) :242-245

[19] Structure-antioxidant activity relationships of flavonoids and phenolic acids [J].

RiceEvans, CA ;

Miller, NJ ;

Paganga, G .

FREE RADICAL BIOLOGY AND MEDICINE, 1996, 20 (07) :933-956

[20]

Ross S. D., 1975, ANODIC OXIDATION

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