A facile approach to the synthesis of hydrophobic iron tetrasulfophthalocyanine (FeTSPc) nano-aggregates on multi-walled carbon nanotubes: A potential electrocatalyst for the detection of dopamine

被引：31
作者：
Fashedemi, Omobosede O. [2 ]
Ozoemena, Kenneth I. [1 ]
机构：
[1] CSIR, ZA-0001 Pretoria, South Africa
[2] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2011年 / 160卷 / 01期
关键词：
Hydrophobic iron (II); tetrasulfophthalocyanine; MWCNTs; Electrocatalysis; Dopamine; Ascorbic acid; ASCORBIC-ACID; COBALT PHTHALOCYANINE; VOLTAMMETRIC DETERMINATION; ELECTRODE; FILM; OXIDATION; COMPLEXES; METALLOPHTHALOCYANINES; ELECTROANALYSIS; TRANSFORMATION;
D O I：
10.1016/j.snb.2011.06.085
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A facile method has been utilized to synthesize a hydrophobic form of nano-scaled iron (II) tetrasulfophthalocyanine (nanoFeTSPc), integrated with functionalized multi-walled carbon nanotubes (fMWCNT-nanoFeTSPc). The nanocomposite was characterized by UV-visible spectra, EDX, FESEM, and TEM. The electrocatalytic properties of the film on a glassy carbon electrode were investigated using cyclic voltammetry, electrochemical impedance spectroscopy. chronoamperometry and square wave voltammetry. The fMWCNT-nanoFeTSPc modified electrode demonstrated higher catalytic performance in terms of electron transport and current response compared to the other electrodes studied towards dopamine (DA) detection giving a sensitivity of 0.314 mu A mu M-1 and a limit of detection of 9.86 x 10(-8) mol L-1. A selective detection was realized in elimination of ascorbic acid response on the Film of fMWCNT-nanoFeTSPc. The detection limit in the presence of a high concentration of ascorbic acid was 3.5 x 10(-7) mol L-1. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：7 / 14
页数：8
相关论文
共 45 条
[1]   Electrocatalytic detection of dopamine at single-walled carbon nanotubes-iron (III) oxide nanoparticles platform [J].
Adekunle, Abolanle S. ;
Agboola, Bolade O. ;
Pillay, Jeseelan ;
Ozoemena, Kenneth I. .
SENSORS AND ACTUATORS B-CHEMICAL, 2010, 148 (01) :93-102
[2]   Comparative efficiency of immobilized non-transition metal phthalocyanine photosensitizers for the visible light transformation of chlorophenols [J].
Agboola, B ;
Ozoemena, KI ;
Nyokong, T .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 248 (1-2) :84-92
[3]   Electrochemical Characterization of Mixed Self-Assembled Films of Water-Soluble Single-Walled Carbon Nanotube-Poly(m-aminobenzene sulfonic acid) and Iron(II) Tetrasulfophthalocyanine [J].
Agboola, Bolade O. ;
Pillay, Jeseelan ;
Makgopa, Katlego ;
Ozoemena, Kenneth I. .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (11) :F159-F166
[4]  
[Anonymous], 2001, ELECTROCHEMICAL METH
[5]   Enhancing dopamine detection using a glassy carbon electrode modified with MWCNTs, quercetin, and Nafion® [J].
Chen, Po-Yen ;
Vittal, R. ;
Nien, Po-Chin ;
Ho, Kuo-Chuan .
BIOSENSORS & BIOELECTRONICS, 2009, 24 (12) :3504-3509
[6]  
Christian G.D., 2004, Analytical Chemistry, V6th, P113
[7]   Guest emission processes in doped organic light-emitting diodes: Use of phthalocyanine and naphthalocyanine near-IR dopants [J].
Flora, WH ;
Hall, HK ;
Armstrong, NR .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (05) :1142-1150
[8]   DETERMINATION OF DIFFUSION-COEFFICIENTS BY FLOW-INJECTION ANALYSIS [J].
GERHARDT, G ;
ADAMS, RN .
ANALYTICAL CHEMISTRY, 1982, 54 (14) :2618-2620
[9]   Cobalt phthalocyanine-based molecular materials for the electrocatalysis and electroanalysis of 2-mercaptoethanol, 2-mercaptoethanesulfonic acid, reduced glutathione and L-cysteine [J].
Griveau, S ;
Gulppi, M ;
Pavez, J ;
Zagal, JH ;
Bedioui, F .
ELECTROANALYSIS, 2003, 15 (09) :779-785
[10]   The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins [J].
Harley, Claire C. ;
Rooney, A. Denise ;
Breslin, Carmel B. .
SENSORS AND ACTUATORS B-CHEMICAL, 2010, 150 (02) :498-504
12345