使用功能化氧化石墨烯/功能化多壁碳纳米管杂化材料修饰的玻璃碳电极电化学测定 4-硝基苯酚

IF 2 3区 化学 Q4 CHEMISTRY, PHYSICAL
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引用次数: 0

摘要

本文制备了一种新型羧基多壁碳纳米管-羧基氧化石墨烯涂层玻璃碳电极(f-MWCNTs/f-GO/GCE),用于电化学测定 4-硝基苯酚(4-NP)。使用傅立叶变换红外光谱(FTIR)、场发射扫描电子显微镜(FE-SEM)、拉曼光谱和粉末 X 射线衍射(XRD)对传感器进行了表征。电化学实验采用循环伏安法(CV)、电化学阻抗谱法(EIS)和安培计法进行。所制备的 f-MWCNTs/f-GO/GCE 可用于在存在其他电活性化合物的情况下快速、灵敏、选择性地测定 4-NP。4-NP 的电化学检测取决于 4-NP 在 -0.65 V 电位下的还原,采用的是安培法。在最佳条件下,传感器对 4-NP 的检测显示出极佳的响应,在 0.018 至 700 µM 之间有三个线性检测范围。该传感器的检测限极低(5.4 nM)。此外,该传感器还被用于检测不同水样中的 4-NP 含量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrochemical determination of 4-nitrophenol using functionalized graphene oxide/functionalized multi-walled carbon nanotubes hybrid material modified glassy carbon electrode
Herein, a novel carboxylated multi-walled carbon nanotubes-carboxylated graphene oxide coated glassy carbon electrode (f-MWCNTs/f-GO/GCE) was prepared for electrochemical determination of 4-nitropehenol (4-NP). The sensor was characterized using fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), raman spectroscopy, and powder x-ray diffraction (XRD). Electrochmical experiments were performed using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and amperometry. The resulting f-MWCNTs/f-GO/GCE could be performed for quick, sensitive, and selective determination of 4-NP in the presence of other electroactive compounds. 4-NP was electrochemically detected depending on the reduction of 4-NP at −0.65 V potential using amperometric method. Under the optimum condutions, the sensor showed excellent response to the determination of 4-NP with three linear detection ranges from 0.018 to 700 µM. The sensor exhibited extremely low limit of detection (5.4 nM). Also, the fabricated sensor was used for detection of 4-NP in different water samples.
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来源期刊
Chemical Physics
Chemical Physics 化学-物理:原子、分子和化学物理
CiteScore
4.60
自引率
4.30%
发文量
278
审稿时长
39 days
期刊介绍: Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.
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