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- W2900417564 abstract "Abstract Three MnO2 nanoparticles with different tunnel structures, α-, β-, and γ-MnO2, were synthesized and characterized. We demonstrated and compared their capabilities on the electrochemical oxidation of nitrite, providing a new perspective for MnO2 or MnO2 based materials on sensing application. α-MnO2 exhibited higher electrochemical reactivity than β- or γ-MnO2, which was ascribed to its higher conductivity, more exposure to MnO6 edges, longer average Mn O bond length, and lower Mn average oxidation state(AOS). We hereby reported the first α-MnO2 nanoparticle-based electrochemical sensor for nitrite sensing. A highly controlled micro-plotter was used to deposit the MnO2 nanoparticles for the sensor fabrication, providing a micro-pattern of the sensing surface area of MnO2 and ensuring the reproducibility and sensitivity of this MnO2 based sensor. Using differential pulse voltammetry, a detection range of 10–800 μM of nitrite was accomplished along with a sensitivity of 17.1 μA μM−1 and a detection limit of 0.5 μM." @default.
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- W2900417564 date "2019-02-01" @default.
- W2900417564 modified "2023-10-12" @default.
- W2900417564 title "Highly sensitive electrochemical analysis of tunnel structured MnO2 nanoparticle-based sensors on the oxidation of nitrite" @default.
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- W2900417564 doi "https://doi.org/10.1016/j.snb.2018.11.014" @default.
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