Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols
In this work, a nanocomposite of molybdenum disulfide (MoS₂) and graphene (r-GO) was synthesized using hydrothermal method, and was subsequently employed as a dopant to fabricate a hybrid coating of polypyrrole (PPy)-r-GO-MoS₂ via cyclic voltammetry (CV). The resulting coating was applied to extract...
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Elsevier
2025-08-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666831925000037 |
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| author | Ting Liang Min Luo Ling Shi Hongping Yang Guangming Yang |
| author_facet | Ting Liang Min Luo Ling Shi Hongping Yang Guangming Yang |
| author_sort | Ting Liang |
| collection | DOAJ |
| description | In this work, a nanocomposite of molybdenum disulfide (MoS₂) and graphene (r-GO) was synthesized using hydrothermal method, and was subsequently employed as a dopant to fabricate a hybrid coating of polypyrrole (PPy)-r-GO-MoS₂ via cyclic voltammetry (CV). The resulting coating was applied to extract five phenolic compounds, and combined with gas chromatography-mass spectrometry (GC–MS) to establish an analytical method for the determination of 3‑chloro-4-fluorophenol, 2‑chloro-4-methoxyphenol, 2,6-dimethoxyphenol, 2,4,6-trichlorophenol, and 2,6-dichloro-4-nitrophenol in environmental samples. The results indicated that PPy-MoS₂-r-GO coating exhibited superior extraction efficiency in comparison with to PPy coating. To optimize testing conditions, MoS₂-r-GO concentration for the electrochemical preparation of the coating, extraction conditions, including time, temperature, and stirring speed, were also investigated. Consequently, the analytical method exhibited an excellent linear response, with a correlation coefficient ranging from 0.9950 to 0.9980 for the five phenolic compounds in the range of 0.01 μg L⁻¹ to 50 μg L⁻¹. The detection limits were 0.00550 μg L⁻¹ - 0.00850 μg L⁻¹. This method was employed to detect phenol in real samples, yielding recoveries ranging from 89.60 % to 103.30 %, thereby confirming its practical applicability. |
| format | Article |
| id | doaj-art-6118ffe73f214c30a01b122fc1ecb807 |
| institution | Kabale University |
| issn | 2666-8319 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Talanta Open |
| spelling | doaj-art-6118ffe73f214c30a01b122fc1ecb8072025-01-08T04:53:46ZengElsevierTalanta Open2666-83192025-08-0111100400Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenolsTing Liang0Min Luo1Ling Shi2Hongping Yang3Guangming Yang4Yunnan Province International Joint Laboratory of Green Food (China-Vietnam), School of Chemistry and Resources Engineering, Honghe University, Mengzi 66142, PR ChinaYunnan Province International Joint Laboratory of Green Food (China-Vietnam), School of Chemistry and Resources Engineering, Honghe University, Mengzi 66142, PR ChinaYunnan Province International Joint Laboratory of Green Food (China-Vietnam), School of Chemistry and Resources Engineering, Honghe University, Mengzi 66142, PR China; Corresponding authors.Library, Honghe University, Mengzi 661199, PR ChinaYunnan Province International Joint Laboratory of Green Food (China-Vietnam), School of Chemistry and Resources Engineering, Honghe University, Mengzi 66142, PR China; Corresponding authors.In this work, a nanocomposite of molybdenum disulfide (MoS₂) and graphene (r-GO) was synthesized using hydrothermal method, and was subsequently employed as a dopant to fabricate a hybrid coating of polypyrrole (PPy)-r-GO-MoS₂ via cyclic voltammetry (CV). The resulting coating was applied to extract five phenolic compounds, and combined with gas chromatography-mass spectrometry (GC–MS) to establish an analytical method for the determination of 3‑chloro-4-fluorophenol, 2‑chloro-4-methoxyphenol, 2,6-dimethoxyphenol, 2,4,6-trichlorophenol, and 2,6-dichloro-4-nitrophenol in environmental samples. The results indicated that PPy-MoS₂-r-GO coating exhibited superior extraction efficiency in comparison with to PPy coating. To optimize testing conditions, MoS₂-r-GO concentration for the electrochemical preparation of the coating, extraction conditions, including time, temperature, and stirring speed, were also investigated. Consequently, the analytical method exhibited an excellent linear response, with a correlation coefficient ranging from 0.9950 to 0.9980 for the five phenolic compounds in the range of 0.01 μg L⁻¹ to 50 μg L⁻¹. The detection limits were 0.00550 μg L⁻¹ - 0.00850 μg L⁻¹. This method was employed to detect phenol in real samples, yielding recoveries ranging from 89.60 % to 103.30 %, thereby confirming its practical applicability.http://www.sciencedirect.com/science/article/pii/S2666831925000037Solid phase microextractionMolybdenum disulfideGraphenePolypyrrolePhenol |
| spellingShingle | Ting Liang Min Luo Ling Shi Hongping Yang Guangming Yang Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols Talanta Open Solid phase microextraction Molybdenum disulfide Graphene Polypyrrole Phenol |
| title | Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols |
| title_full | Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols |
| title_fullStr | Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols |
| title_full_unstemmed | Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols |
| title_short | Electrochemical preparation of polypyrrole-molybdenum disulfide-graphene nanocomposite coating for the determination of phenols |
| title_sort | electrochemical preparation of polypyrrole molybdenum disulfide graphene nanocomposite coating for the determination of phenols |
| topic | Solid phase microextraction Molybdenum disulfide Graphene Polypyrrole Phenol |
| url | http://www.sciencedirect.com/science/article/pii/S2666831925000037 |
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