Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine
Abstract In this study, metal–organic framework (MOF) nanoparticles of UiO‐66 are integrated with expanded graphite (EG) (UiO‐66/EG) by a facile solvothermal approach. The advantages of this nanocomposite UiO‐66/EG overcome the poor electronic conductivity and slow diffusion of MOFs for their electr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-05-01
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| Series: | Advanced Sensor Research |
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| Online Access: | https://doi.org/10.1002/adsr.202200014 |
| _version_ | 1827896048746496000 |
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| author | Yangwei Li Jing Qian Yuanyuan Zhang Ting Zeng Qijin Wan Nianjun Yang |
| author_facet | Yangwei Li Jing Qian Yuanyuan Zhang Ting Zeng Qijin Wan Nianjun Yang |
| author_sort | Yangwei Li |
| collection | DOAJ |
| description | Abstract In this study, metal–organic framework (MOF) nanoparticles of UiO‐66 are integrated with expanded graphite (EG) (UiO‐66/EG) by a facile solvothermal approach. The advantages of this nanocomposite UiO‐66/EG overcome the poor electronic conductivity and slow diffusion of MOFs for their electrochemical applications. Through electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and electrochemical techniques, the morphology, surface area, and physicochemical properties of this UiO‐66/EG nanocomposite are characterized. The UiO‐66/EG nanocomposite exhibits superior sensing performance over the UiO‐66 and EG when used for nitrite and L‐cysteine determination. This includes less positive oxidation potentials and enhanced oxidation currents. Using the UiO‐66/EG nanocomposite, the nitrite oxidation peak current is linear with a concentration range of 0.20 μm to 13.15 mm with the lowest limit of detection (LOD) of 0.06 μm (S/N = 3). Meanwhile, superior performance is demonstrated for L‐cysteine monitoring, where the oxidation peak current is linear over the L‐cysteine concentration in the range of 0.5–250 μm and of 0.25–3.50 mm and a LOD of 0.28 μm (S/N = 3). This UiO‐66/EG/GCE nanocomposite is successfully exploited to detect nitrite in food samples and to measure L‐cysteine in juice samples. Therefore, the proposed sensing platform enables the fabrication of high‐performance electrochemical sensors to accurately quantify nitrite and L‐cysteine in complex matrixes. |
| first_indexed | 2024-03-12T22:29:22Z |
| format | Article |
| id | doaj.art-31804529132e4842bd5320a2b1aae4df |
| institution | Directory Open Access Journal |
| issn | 2751-1219 |
| language | English |
| last_indexed | 2024-03-12T22:29:22Z |
| publishDate | 2023-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Sensor Research |
| spelling | doaj.art-31804529132e4842bd5320a2b1aae4df2023-07-21T15:30:31ZengWiley-VCHAdvanced Sensor Research2751-12192023-05-0125n/an/a10.1002/adsr.202200014Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐CysteineYangwei Li0Jing Qian1Yuanyuan Zhang2Ting Zeng3Qijin Wan4Nianjun Yang5School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Wuhan Institute of Technology Wuhan 430073 ChinaSchool of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Wuhan Institute of Technology Wuhan 430073 ChinaSchool of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Wuhan Institute of Technology Wuhan 430073 ChinaSchool of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Wuhan Institute of Technology Wuhan 430073 ChinaSchool of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology Wuhan Institute of Technology Wuhan 430073 ChinaInstitute of Materials Engineering University of Siegen Siegen 57076 GermanyAbstract In this study, metal–organic framework (MOF) nanoparticles of UiO‐66 are integrated with expanded graphite (EG) (UiO‐66/EG) by a facile solvothermal approach. The advantages of this nanocomposite UiO‐66/EG overcome the poor electronic conductivity and slow diffusion of MOFs for their electrochemical applications. Through electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, and electrochemical techniques, the morphology, surface area, and physicochemical properties of this UiO‐66/EG nanocomposite are characterized. The UiO‐66/EG nanocomposite exhibits superior sensing performance over the UiO‐66 and EG when used for nitrite and L‐cysteine determination. This includes less positive oxidation potentials and enhanced oxidation currents. Using the UiO‐66/EG nanocomposite, the nitrite oxidation peak current is linear with a concentration range of 0.20 μm to 13.15 mm with the lowest limit of detection (LOD) of 0.06 μm (S/N = 3). Meanwhile, superior performance is demonstrated for L‐cysteine monitoring, where the oxidation peak current is linear over the L‐cysteine concentration in the range of 0.5–250 μm and of 0.25–3.50 mm and a LOD of 0.28 μm (S/N = 3). This UiO‐66/EG/GCE nanocomposite is successfully exploited to detect nitrite in food samples and to measure L‐cysteine in juice samples. Therefore, the proposed sensing platform enables the fabrication of high‐performance electrochemical sensors to accurately quantify nitrite and L‐cysteine in complex matrixes.https://doi.org/10.1002/adsr.202200014electrochemical sensorsL‐cysteinenitriteUiO‐66/EG composite |
| spellingShingle | Yangwei Li Jing Qian Yuanyuan Zhang Ting Zeng Qijin Wan Nianjun Yang Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine Advanced Sensor Research electrochemical sensors L‐cysteine nitrite UiO‐66/EG composite |
| title | Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine |
| title_full | Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine |
| title_fullStr | Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine |
| title_full_unstemmed | Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine |
| title_short | Intergradation of UiO‐66 Nanoparticles with Expanded Graphite for Electrocatalytic Determination of Nitrite and L‐Cysteine |
| title_sort | intergradation of uio 66 nanoparticles with expanded graphite for electrocatalytic determination of nitrite and l cysteine |
| topic | electrochemical sensors L‐cysteine nitrite UiO‐66/EG composite |
| url | https://doi.org/10.1002/adsr.202200014 |
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