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- W2561651097 abstract "Herein, reduced graphene oxide (rGO)/MnO2 hybrid materials were prepared via a direct redox reaction between MnCl2 and KMnO4 on reduced graphene oxide (rGO). A systematic study was carried out to understand the role of KMnO4. The morphology and microstructure of the as-prepared composite was characterized using field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman Spectroscopy. Results indicate that the concentrations of KMnO4 have a detrimental effect on the distribution of MnO2 nanoparticles on rGO sheets and hence on electrochemical properties. The electrochemical capacitive behavior of the as-prepared composite was investigated using cyclic voltammetry (CV), galvanostatic charge discharge, and electrochemical impedance spectroscopy (EIS) in 1 M Na2SO4 aqueous electrolyte solution. At the optimum concentration of KMnO4, the as-prepared rGM-1 composite shows a high specific capacitance of 366 F/g at a scan rate of 10 mV/s. The composite also exhibits good electrocatalytic activity towards the oxidation of dopamine (DA), exhibiting a low detection limit of 2.3 × 10−7 M with a wide linear range between 2.5 × 10−7 M and 2.30 × 10−4 M. Hence, the use of rGO/MnO2 at an optimized concentration of KMnO4 is a potential competitive candidate in supercapacitor and biosensor applications." @default.
- W2561651097 created "2017-01-06" @default.
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- W2561651097 date "2017-03-01" @default.
- W2561651097 modified "2023-10-14" @default.
- W2561651097 title "A new protocol for the distribution of MnO 2 nanoparticles on rGO sheets and the resulting electrochemical performance" @default.
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- W2561651097 doi "https://doi.org/10.1016/j.apsusc.2016.12.086" @default.
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