DataSheet1_2D/3D Copper-Based Metal-Organic Frameworks for Electrochemical Detection of Hydrogen Peroxide.docx
Metal-organic frameworks (MOFs) have been extensively used as modified materials of electrochemical sensors in the food industry and agricultural system. In this work, two kinds of copper-based MOFs (Cu-MOFs) with a two dimensional (2D) sheet-like structure and three dimensional (3D) octahedral structure for H2O2 detection were synthesized and compared. The synthesized 2D and 3D Cu-MOFs were modified on the glassy carbon electrode to fabricate electrochemical sensors, respectively. The sensor with 3D Cu-MOF modification (HKUST-1/GCE) presented better electrocatalytic performance than the 2D Cu-MOF modified sensor in H2O2 reduction. Under optimal conditions, the prepared sensor displayed two wide linear ranges of 2 μM–3 mM and 3–25 mM and a low detection limit of 0.68 μM. In addition, the 3D Cu-MOF sensor exhibited good selectivity and stability. Furthermore, the prepared HKUST-1/GCE was used for the detection of H2O2 in milk samples with a high recovery rate, indicating great potential and applicability for the detection of substances in food samples. This work provides a convenient, practical, and low-cost route for analysis and extends the application range of MOFs in the food industry, agricultural and environmental systems, and even in the medical field.
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Categories
- Geochemistry
- Biochemistry
- Inorganic Chemistry
- Organic Chemistry
- Nuclear Chemistry
- Medical Biochemistry: Proteins and Peptides (incl. Medical Proteomics)
- Medical Biochemistry and Metabolomics not elsewhere classified
- Environmental Chemistry (incl. Atmospheric Chemistry)
- Analytical Biochemistry
- Cell Neurochemistry
- Electroanalytical Chemistry
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- Organic Green Chemistry
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- Catalysis and Mechanisms of Reactions
- Analytical Chemistry not elsewhere classified
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