Non-enzymatic polyamic acid sensors for hydrogen peroxide detection

被引：41
|
作者：
Zamfir, Lucian-Gabriel [1 ]
Rotariu, Lucian [1 ,2 ]
Marinescu, Virgil Emanuel [3 ]
Simelane, Xolani T. [4 ]
Baker, Priscilla G. L. [4 ]
Iwuoha, Emmanuel I. [4 ]
Bala, Camelia [1 ,2 ]
机构：
[1] Univ Bucharest, LaborQ, 4 12 Regina Elisabeta Blvd, Bucharest 030018, Romania
[2] Univ Bucharest, Dept Analyt Chem, 4-12 Regina Elisabeta Blvd, Bucharest 030018, Romania
[3] Natl Inst R&D Elect Engn, 313 Spl Unirii, Bucharest 030138, Romania
[4] Univ Western Cape, Dept Chem, Sensor Lab, Private Bag X 17, ZA-7535 Bellville, South Africa
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2016年 / 226卷
关键词：
Polyamic acid; Hydrogen peroxide; Screen-printed electrode; Sensor; ELECTROCATALYTIC REDUCTION; GRAPHENE; POLYIMIDE; COMPOSITE; MEMBRANES; OXYGEN; FILMS;
D O I：
10.1016/j.snb.2015.12.026
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Different polyamic acid (PAA) modified sensors for hydrogen peroxide (H2O2) detection were prepared and characterized. Electro-deposition of a chemically synthesized PAA solution was used for modification of glassy-carbon electrode, while drop-casting was used for carbon (CSPE), gold (Au-SPE) and gold nanoparticles (AuNP5-SPE) screen-printed electrodes modification. All the studies performed, including the cyclic voltammetry, electrochemical impedance spectroscopy, amperometry revealed the best analytical performances of the PAA/Au-SPE electrode with a specific sensitivity of 899 pAmM(-1) cm(-2) and a detection limit of 2 OA hydrogen peroxide. The PAA/Au-SPE sensor exhibited a good selectivity for the determination of H2O2 in synthetic urine samples, and could be used to control the oxidative stress of the body. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：525 / 533
页数：9
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