High Sensitivity Electrochemical As (III) Sensor Based on Fe3O4/MoS2 Nanocomposites

被引：7
作者：
Hu, Haibing [1 ]
Hu, Yunhu [1 ]
Xie, Baozhu [1 ]
Zhu, Jianxiong [2 ,3 ]
机构：
[1] Hefei Univ Technol, Acad Optoelect Technol, Special Display & Imaging Technol Innovat Ctr Anhu, Collaborat Innovat Ctr Adv Display Technol,Natl En, Hefei 230009, Peoples R China
[2] Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China
[3] Minist Educ, Engn Res Ctr New Light Sources Technol & Equipment, Nanjing 211189, Peoples R China
来源：
NANOMATERIALS | 2023年 / 13卷 / 16期
关键词：
As (III) detection; electrochemical analysis method; electrochemical sensors; GLASSY-CARBON ELECTRODE; METAL-IONS; AU NANOPARTICLES; COMPOSITE; ARSENIC(III); GRAPHENE; GOLD; ARSENITE; FILMS;
D O I：
10.3390/nano13162288
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Currently, heavy metal ion pollution in water is becoming more and more common, especially As (III), which is a serious threat to human health. In this experiment, a glassy carbon electrode modified with Fe3O4/MoS2 nanocomposites was used to select the square wave voltammetry (SWV) electrochemical detection method for the detection of trace As (III) in water. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) showed thatFe(3)O(4) nanoparticles were uniformly attached to the surface of MoS2 and were not easily agglomerated. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) showed thatFe(3)O(4)/MoS2 has higher sensitivity and conductivity. After optimizing the experimental conditions, the Fe3O4/MoS2 -modified glassy carbon electrode exhibited high sensitivity (3.67 mu A/ppb) and a low detection limit (0.70 ppb), as well as excellent interference resistance and stability for As (III).
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页数：16
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