AI Article Synopsis
- This study developed β-type MnO nano-flowers using a simple hydro-thermal method, resulting in structures about 800 nm in diameter with petal-like features.
- The research aimed to create an electro-chemical sensor that can effectively detect theobromine (ThB), theophylline (ThP), and caffeine (CaF) using the MnO nano-flowers modified electrode.
- The sensor demonstrated a solid linear response for these compounds between concentrations of 0.01 and 320.0 μM, with limits of detection ranging from 5.9 to 10.1 nM, and also analyzed the bio-availability of these substances in various chocolate products and medications.
Article Abstract
This study substantially synthesized the β-type MnO nano-flowers assembled by the hierarchical nano-sheets using a simplified hydro-thermal procedure. According to the FESEM images, MnO nano-flower exhibited diameter of ∼800 nm and fabricated with a lot of irregular sheets as a petal-like structure with thickness of several nano-meters. Therefore, the study focused on the construction of an electro-chemical sensor to simultaneously determine theobromine (ThB), theophylline (ThP), as well as caffeine (CaF) on the basis of the β-type hierarchical structure of the MnO nano-flowers (βH-MnO-NF) modified electrode (βH-MnO-NF/GCE). Analysis showed an acceptable linear association between the oxidation peak current and ThB, ThP and CaF concentration within the ranges between 0.01 and 320.0 μM with a limit of detection (LOD) equal to 8.7, 5.9, and 10.1 nM (S/N = 3), respectively. Additionally, this study intended to investigate ThB, Thp and CaF bio-availability in the five commercially available brands of the chocolate products and drug.
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| http://dx.doi.org/10.1016/j.talanta.2020.121563 | DOI Listing |
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