MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples
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<sub>2</sub>/MWCNTs/SPCE) for 4-nitrophenol (4-NP) determination. The successful...
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MDPI AG
2025-03-01
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| author | Hadi Beitollahi Somayeh Tajik |
| author_facet | Hadi Beitollahi Somayeh Tajik |
| author_sort | Hadi Beitollahi |
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| description | 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<sub>2</sub>/MWCNTs/SPCE) for 4-nitrophenol (4-NP) determination. The successful synthesis of the MoS<sub>2</sub>/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<sub>2</sub>/MWCNTs/SPCE was examined using differential pulse voltammetry (DPV), cyclic voltammetry (CV), and chronoamperometry techniques. The MoS<sub>2</sub>/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<sub>2</sub>/MWCNTs/SPCE sensor has advantages including repeatability, reproducibility, stability, inexpensiveness, and practical application. The MoS<sub>2</sub>/MWCNTs/SPCE-based sensor was also utilized for the determination of 4-NP in real water specimens. |
| format | Article |
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| institution | OA Journals |
| issn | 2072-666X |
| language | English |
| publishDate | 2025-03-01 |
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| spelling | doaj-art-0a2f1946420a46a0a29d49dd64d2d55d2025-08-20T02:18:20ZengMDPI AGMicromachines2072-666X2025-03-0116436610.3390/mi16040366MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water SamplesHadi Beitollahi0Somayeh Tajik1Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman P.O. Box 76318-85356, IranResearch Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman P.O. Box 76169-13555, IranIn 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<sub>2</sub>/MWCNTs/SPCE) for 4-nitrophenol (4-NP) determination. The successful synthesis of the MoS<sub>2</sub>/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<sub>2</sub>/MWCNTs/SPCE was examined using differential pulse voltammetry (DPV), cyclic voltammetry (CV), and chronoamperometry techniques. The MoS<sub>2</sub>/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<sub>2</sub>/MWCNTs/SPCE sensor has advantages including repeatability, reproducibility, stability, inexpensiveness, and practical application. The MoS<sub>2</sub>/MWCNTs/SPCE-based sensor was also utilized for the determination of 4-NP in real water specimens.https://www.mdpi.com/2072-666X/16/4/366disposable sensorcarbon nanostructurestransition metal dichalcogenideselectrochemical sensor4-nitrophenolwater pollution |
| spellingShingle | Hadi Beitollahi Somayeh Tajik MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples Micromachines disposable sensor carbon nanostructures transition metal dichalcogenides electrochemical sensor 4-nitrophenol water pollution |
| title | MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples |
| title_full | MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples |
| title_fullStr | MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples |
| title_full_unstemmed | MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples |
| title_short | MoS<sub>2</sub>/MWCNT Nanostructure: Enhanced Performance of Screen-Printed Carbon Electrode for Voltammetric Determination of 4-Nitrophenol in Water Samples |
| title_sort | mos sub 2 sub mwcnt nanostructure enhanced performance of screen printed carbon electrode for voltammetric determination of 4 nitrophenol in water samples |
| topic | disposable sensor carbon nanostructures transition metal dichalcogenides electrochemical sensor 4-nitrophenol water pollution |
| url | https://www.mdpi.com/2072-666X/16/4/366 |
| work_keys_str_mv | AT hadibeitollahi mossub2submwcntnanostructureenhancedperformanceofscreenprintedcarbonelectrodeforvoltammetricdeterminationof4nitrophenolinwatersamples AT somayehtajik mossub2submwcntnanostructureenhancedperformanceofscreenprintedcarbonelectrodeforvoltammetricdeterminationof4nitrophenolinwatersamples |