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MoS/MWCNT纳米结构：用于伏安法测定水样中4-硝基苯酚的丝网印刷碳电极性能增强

MoS/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples.

作者信息

Beitollahi Hadi, Tajik Somayeh

机构信息

Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman P.O. Box 76318-85356, Iran.

Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman P.O. Box 76169-13555, Iran.

出版信息

Micromachines (Basel). 2025 Mar 23;16(4):366. doi: 10.3390/mi16040366.

DOI:10.3390/mi16040366
PMID:40283243
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12029728/
Abstract

In the present work, we designed a straightforward and disposable voltammetric sensor utilizing a molybdenum disulfide/multi-walled carbon nanotube nanostructure-modified screen-printed carbon electrode (MoS/MWCNTs/SPCE) for 4-nitrophenol (4-NP) determination. The successful synthesis of the MoS/MWCNT nanostructure was characterized using Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EXD) mapping. The electrochemical behavior of 4-NP at the MoS/MWCNTs/SPCE was examined using differential pulse voltammetry (DPV), cyclic voltammetry (CV), and chronoamperometry techniques. The MoS/MWCNTs/SPCE exhibited outstanding electro-catalytic activity for the voltammetric detection of 4-NP. Under optimized conditions, the reduction peak current showed a linear dependence with the concentration of 4-NP in the range of 0.05 to 800.0 µM, and a detection limit (LOD) of 0.01 µM was determined. In addition, the MoS/MWCNTs/SPCE sensor has advantages including repeatability, reproducibility, stability, inexpensiveness, and practical application. The MoS/MWCNTs/SPCE-based sensor was also utilized for the determination of 4-NP in real water specimens.

摘要

在本工作中，我们设计了一种简单且一次性使用的伏安传感器，该传感器利用二硫化钼/多壁碳纳米管纳米结构修饰的丝网印刷碳电极（MoS₂/MWCNTs/SPCE）来测定4-硝基苯酚（4-NP）。通过傅里叶变换红外（FT-IR）光谱、X射线衍射（XRD）、透射电子显微镜（TEM）和能量色散X射线光谱（EXD）映射对MoS₂/MWCNT纳米结构的成功合成进行了表征。使用差分脉冲伏安法（DPV）、循环伏安法（CV）和计时电流法技术研究了4-NP在MoS₂/MWCNTs/SPCE上的电化学行为。MoS₂/MWCNTs/SPCE对4-NP的伏安检测表现出出色的电催化活性。在优化条件下，还原峰电流与4-NP浓度在0.05至800.0 μM范围内呈线性关系，测定的检测限（LOD）为0.01 μM。此外，MoS₂/MWCNTs/SPCE传感器具有重复性、再现性、稳定性、廉价性和实际应用等优点。基于MoS₂/MWCNTs/SPCE的传感器还用于实际水样中4-NP的测定。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/85039bd3928d/micromachines-16-00366-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/dde6b00321dd/micromachines-16-00366-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/93457ee32128/micromachines-16-00366-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/e0d53d7b5ccd/micromachines-16-00366-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/635673060e0f/micromachines-16-00366-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/85039bd3928d/micromachines-16-00366-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/dde6b00321dd/micromachines-16-00366-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/93457ee32128/micromachines-16-00366-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/e0d53d7b5ccd/micromachines-16-00366-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/635673060e0f/micromachines-16-00366-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a389/12029728/85039bd3928d/micromachines-16-00366-sch001.jpg

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