MXene/La3+ Doped ZnO/Hb Nanocomposite Modified Glassy Carbon Electrode as Novel Voltammetric Sensor for Determination of Hydrogen Peroxide

被引：4

作者：

Beigmoradi, Fariba ^{[1
]}

Beitollahi, Hadi ^{[2
]}

机构：

[1] Grad Univ Adv Technol, Dept Chem, Kerman 7631818356, Iran

[2] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Environm Dept, Kerman 7631818356, Iran

来源：

SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY | 2021年 / 57卷 / 06期

关键词：

hydrogen peroxide; MXene; La3+ doped ZnO; Hb nanocomposite; glassy carbon electrode; voltammetric sensor; water samples; ELECTROCHEMICAL SENSORS; IONIC LIQUID; NANOPARTICLES; ACID; OXIDE; HEMOGLOBIN; REDUCTION; BIOSENSOR; PLATFORM; SAMPLES;

D O I：

10.3103/S106837552106003X

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The purpose of the present study was to introduce a new voltammetric sensor of MXene/La3+-doped ZnO/hemoglobin (Hb) nanocomposite-modified glassy carbon electrode (MXene/La3+-doped ZnO/Hb/GCE) with a potential electro-conductivity and catalytic activity to detect the presence of hydrogen peroxide (H2O2). To this end, the method of cyclic voltammetry was used to analyze the electrochemical behavior of H2O2. The cathodic potential scanning showed the reduction peak at the potential of -0.2 V. The results revealed higher cathodic peak currents (I-pc) for the MXene/La3+-doped ZnO/Hb/GCE sensor when compared with a GCE alone. Moreover, using a differential pulse voltammetry, the range of linear concentration was obtained to be between 2.0 x 10(-7) and 4.0 x 10(-4) M, presenting the detection limit of 8.0 x 10(-8) M. Additionally, acceptable recoveries were observed for the proposed approach in water samples.

引用

页码：708 / 714

页数：7

共 47 条

[1] Fabrication of highly sensitive uric acid biosensor based on directly grown ZnO nanosheets on electrode surface [J].