CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples
Water pollution with phenolic compounds is a serious environmental issue that can pose a major threat to the water sources. This pollution can come from various agricultural and industrial activities. Phenolic compounds can have detrimental effects on both human health and the environment. Therefore...
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2024-11-01
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| author | Somayeh Tajik Hadi Beitollahi Fariba Garkani Nejad Reza Zaimbashi |
| author_facet | Somayeh Tajik Hadi Beitollahi Fariba Garkani Nejad Reza Zaimbashi |
| author_sort | Somayeh Tajik |
| collection | DOAJ |
| description | Water pollution with phenolic compounds is a serious environmental issue that can pose a major threat to the water sources. This pollution can come from various agricultural and industrial activities. Phenolic compounds can have detrimental effects on both human health and the environment. Therefore, it is essential to develop and improve analytical methods for determination of these compounds in the water samples. In this work, the aim was to design and develop an electrochemical sensing platform for the determination of 2,4-dichlorophenol (2,4-DCP) in water samples. In this regard, a nanocomposite consisting of CoWO<sub>4</sub> nanoparticles (NPs) anchored on reduced graphene oxide nanosheets (rGO NSs) was prepared through a facile hydrothermal method. The formation of the CoWO<sub>4</sub>/rGO nanocomposite was confirmed via different characterization techniques. Then, the prepared CoWO<sub>4</sub>/rGO nanocomposite was used to modify the surface of a screen-printed carbon electrode (SPCE) for enhanced determination of 2,4-DCP. The good electrochemical response of the modified SPCE towards the oxidation of 2,4-DCP was observed by using cyclic voltammetry (CV) due to the good properties of CoWO<sub>4</sub> NPs and rGO NSs along with their synergistic effects. Under optimized conditions, the CoWO<sub>4</sub>/rGO/SPCE sensor demonstrated a broad linear detection range (0.001 to 100.0 µM) and low limit of detection (LOD) (0.0007 µM) for 2,4-DCP determination. Also, the sensitivity of CoWO<sub>4</sub>/rGO/SPCE for detecting 2,4-DCP was 0.3315 µA/µM. In addition, the good recoveries for determining spiked 2,4-DCP in the water samples at the surface of CoWO<sub>4</sub>/rGO/SPCE showed its potential for determination of this compound in real samples. |
| format | Article |
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| institution | Kabale University |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Micromachines |
| spelling | doaj-art-db4b1c9bb663451b97bab188e7c141392024-11-26T18:13:58ZengMDPI AGMicromachines2072-666X2024-11-011511136010.3390/mi15111360CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water SamplesSomayeh Tajik0Hadi Beitollahi1Fariba Garkani Nejad2Reza Zaimbashi3Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman 7616913555, IranEnvironment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631885356, IranEnvironment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631885356, IranEnvironment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631885356, IranWater pollution with phenolic compounds is a serious environmental issue that can pose a major threat to the water sources. This pollution can come from various agricultural and industrial activities. Phenolic compounds can have detrimental effects on both human health and the environment. Therefore, it is essential to develop and improve analytical methods for determination of these compounds in the water samples. In this work, the aim was to design and develop an electrochemical sensing platform for the determination of 2,4-dichlorophenol (2,4-DCP) in water samples. In this regard, a nanocomposite consisting of CoWO<sub>4</sub> nanoparticles (NPs) anchored on reduced graphene oxide nanosheets (rGO NSs) was prepared through a facile hydrothermal method. The formation of the CoWO<sub>4</sub>/rGO nanocomposite was confirmed via different characterization techniques. Then, the prepared CoWO<sub>4</sub>/rGO nanocomposite was used to modify the surface of a screen-printed carbon electrode (SPCE) for enhanced determination of 2,4-DCP. The good electrochemical response of the modified SPCE towards the oxidation of 2,4-DCP was observed by using cyclic voltammetry (CV) due to the good properties of CoWO<sub>4</sub> NPs and rGO NSs along with their synergistic effects. Under optimized conditions, the CoWO<sub>4</sub>/rGO/SPCE sensor demonstrated a broad linear detection range (0.001 to 100.0 µM) and low limit of detection (LOD) (0.0007 µM) for 2,4-DCP determination. Also, the sensitivity of CoWO<sub>4</sub>/rGO/SPCE for detecting 2,4-DCP was 0.3315 µA/µM. In addition, the good recoveries for determining spiked 2,4-DCP in the water samples at the surface of CoWO<sub>4</sub>/rGO/SPCE showed its potential for determination of this compound in real samples.https://www.mdpi.com/2072-666X/15/11/1360water pollution2,4-dichlorophenolphenolic compoundsscreen-printed carbon electrodeelectrochemical sensor |
| spellingShingle | Somayeh Tajik Hadi Beitollahi Fariba Garkani Nejad Reza Zaimbashi CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples Micromachines water pollution 2,4-dichlorophenol phenolic compounds screen-printed carbon electrode electrochemical sensor |
| title | CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples |
| title_full | CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples |
| title_fullStr | CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples |
| title_full_unstemmed | CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples |
| title_short | CoWO<sub>4</sub>/Reduced Graphene Oxide Nanocomposite-Modified Screen-Printed Carbon Electrode for Enhanced Voltammetric Determination of 2,4-Dichlorophenol in Water Samples |
| title_sort | cowo sub 4 sub reduced graphene oxide nanocomposite modified screen printed carbon electrode for enhanced voltammetric determination of 2 4 dichlorophenol in water samples |
| topic | water pollution 2,4-dichlorophenol phenolic compounds screen-printed carbon electrode electrochemical sensor |
| url | https://www.mdpi.com/2072-666X/15/11/1360 |
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