AI Article Synopsis
- The research focuses on creating a fast and efficient electrochemical sensor for selectively detecting dopamine, addressing challenges with traditionally slow preparation methods of transition metal selenides combined with carbon materials.
- A novel method using dielectric barrier discharge microplasma was developed to quickly synthesize a composite electrode made of cobalt selenide nanospheres and nitrogen-doped polymeric carbon dots on carbon cloth, resulting in sensitive detection capabilities for dopamine in human serum samples.
- The study highlights the advantages of this energy-efficient synthesis process and uses theoretical calculations to explain the electrode's effectiveness in catalyzing dopamine oxidation.
Article Abstract
Background: Designing a fast and sensitive electrochemical sensing platform to achieve selective quantitative detection of dopamine (DA) is a great challenge. Combining transition metal selenides (TMSs) with a variety of conductive carbonaceous materials is one of the effective strategies to improve the electrocatalytic activity of TMSs. However, most of the reported preparation methods of TMSs/carbon-based composite nanomaterials need to be annealed at a high temperature for a long time, which does not meet the requirements of sustainable development. Therefore, it is of great significance to explore an energy-efficient and fast method to prepare these compounds.
Results: In this work, CoSe nanosphere@nitrogen-doped polymeric carbon dots are rapid prepared using ZIF precursor by simple dielectric barrier discharge (DBD) microplasma-induced on carbon cloth (CoSe NSs@N-PCDs/CC) for the first time. Owing to the fact that CoSe can promote rapid proton transfer, N-CDs has a high specific surface area, rich functional groups and electrical conductivity, this electrode exhibits highly sensitive non-enzymatic electrochemical sensing performance for DA detection. The linear range and detection limit are 0.1 μM-50 μM and 40.2 nM, respectively, and it have been successfully applied to the determination of DA levels in real human serum samples. Theoretical DFT calculations show that the most efficient interaction with DA on the surface of CoSe (101) can promote electrochemical reactions and catalyze DA oxidation.
Significance: Using ZIF as precursor, CoSe NSs@N-PCDs/CC electrochemical electrode was synthesized in situ by simple and energy-saving DBD microplasma. CoSe NSs can effectively prevent the aggregation of function-rich N-PCDs and significantly improve the electrocatalytic activity of the composite. The mechanism of high selectivity of CoSe NSs@N-PCDs/CC electrode to DA was studied by DFT calculation. This work provides a new idea for the fast and green synthesis of transition metal and carbon-based nanomaterials by microplasma.
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| http://dx.doi.org/10.1016/j.aca.2024.343236 | DOI Listing |
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Article Synopsis
- The research focuses on creating a fast and efficient electrochemical sensor for selectively detecting dopamine, addressing challenges with traditionally slow preparation methods of transition metal selenides combined with carbon materials.
- A novel method using dielectric barrier discharge microplasma was developed to quickly synthesize a composite electrode made of cobalt selenide nanospheres and nitrogen-doped polymeric carbon dots on carbon cloth, resulting in sensitive detection capabilities for dopamine in human serum samples.
- The study highlights the advantages of this energy-efficient synthesis process and uses theoretical calculations to explain the electrode's effectiveness in catalyzing dopamine oxidation.
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