A sensitive and selective graphene/cobalt tetrasulfonated phthalocyanine sensor for detection of dopamine

被引：71
|
作者：
Diab, Nizam [1 ,2 ]
Morales, Dulce M. [1 ]
Andronescu, Corina [1 ,3 ]
Masoud, Muayad [2 ]
Schuhmann, Wolfgang [1 ]
机构：
[1] Ruhr Univ Bochum, Analyt Chem, Fac Chem & Biochem, CES, Univ Str 150, D-44780 Bochum, Germany
[2] Arab Amer Univ, Chem Dept, POB 240, Jenin, Palestine
[3] Univ Duisburg Essen, Tech Chem 3, Fac Chem, Carl Benz Str 199, D-47057 Duisburg, Germany
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2019年 / 285卷
关键词：
Dopamine; Graphene; Cobalt tetrasulfonate phthalocyanine; Differential pulse stripping voltammetry; Electrochemical sensor; GLASSY-CARBON ELECTRODE; ASCORBIC-ACID; HYDROGEN-PEROXIDE; OXIDE; NANOPARTICLES; SEROTONIN; NOREPINEPHRINE; FABRICATION; COMPLEX;
D O I：
10.1016/j.snb.2019.01.022
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Electrochemical dopamine-sensing surfaces were fabricated by deposition of graphene sheets modified with cobalt tetrasulfonated phthalocyanine on glassy carbon electrodes (CoTSPc/Gr-GC) using differential pulse amperometry. Differential pulse stripping voltammetry was used to detect dopamine (DA) and the influence of pH value, scan rate, accumulation potential and time as well as dopamine concentration on the performance of CoTSPc/Gr-GC electrodes was investigated. The modified electrodes were successfully used as sensors for the selective and high sensitive determination of DA in presence of high concentrations of ascorbic acid (AA) and uric acid (UA) with a detection limit of 0.87 nM over the dynamic linear range of 20 nM to 220 nM.
引用
收藏
页码：17 / 23
页数：7
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