Electrochemical Determination of Tyrosine Using Graphene and Gold Nanoparticle Composite Modified Glassy Carbon Electrode

被引：10
|
作者：
Liu, M. [1 ,2 ]
Lao, J. [3 ]
Wang, H. [1 ,2 ]
Xu, Z. [1 ,2 ]
Li, J. [1 ,2 ]
Wen, L. [1 ,2 ]
Yin, Z. [1 ,2 ]
Luo, C. [3 ]
Peng, H. [3 ,4 ]
机构：
[1] Hengyang Normal Univ, Key Lab Funct Metal Organ Cpds Hunan Prov, Hengyang 421008, Peoples R China
[2] Hengyang Normal Univ, Coll Chem & Mat Sci, Hunan Prov Univ Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China
[3] East China Normal Univ, Dept Elect, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China
[4] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2021年 / 57卷 / 01期
基金：
中国国家自然科学基金;
关键词：
tyrosine; graphene; gold nanoparticle; modified electrode; electrocatalytic oxidation;
D O I：
10.1134/S1023193520110063
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A electrochemical sensor based on graphene and gold nanoparticles modified glassy carbon electrode (GCE) was developed for the determination of tyrosine (Tyr). The graphene and gold nanoparticles modified glassy carbon electrode (GR/Au NPs/GCE) was prepared by potentiostatic deposition of gold nanoparticles on the grephene coated GCE. Cyclic voltammetry and linear sweep voltammetry were used to study the electrochemical behavior of Tyr on the modified electrode, which showed improved electrocatalytic behavior for oxidation of Tyr due to the significant enhancement of peak current. A linear response between the peak current and the Tyr concentration was detected between 100 nM-100 mu M and the detection limit (S/N = 3) was 47 nM. The simple preparation and the good sensitivity make this graphene/gold nanoparticles modified GCE very promising for Tyr analysis in real samples.
引用
收藏
页码：41 / 50
页数：10
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