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- W3082291010 abstract "Abstract Electrochemical studies of graphene oxide (GO) containing sulfur-oxygen functional group (sulfonated graphene) and its application as electrode material for supercapacitor and electrocatalytic oxidation of H 2 O2 are demonstrated in this report. The sulfonated graphene (SGO) was synthesized using uniform heating of a homogeneous mixture of GO and ammonium sulfate at an elevated temperature ∼ 245 °C and characterized using FTIR, UV–Vis spectroscopy, and transmission electron microscopy. The electrochemical characterizations showed that the SGO exhibit the capacitance value as high as 248 F/g at current density 0.15 A/g along with superior cyclic stability ( ∼ 80% retention of cyclic stability after 8000 cycles). Also, SGO showed excellent electrocatalytic activity towards H 2 O2 oxidation and further, an electrochemical sensor for H 2 O2 detection was fabricated in an aqueous medium with ultra-low detection limit and high sensitivity. The oxidation current was found to be increased linearly with H 2 O2 concentration in the range of 10–100 μ M and 0.1–1 mM with a detection limit of 10.44 μ M and 0.038 mM respectively. The detailed kinetic study, including evaluation of kinetic parameters of the electro-oxidation process was also performed from the cyclic voltammetry study. We believe that this work will pave pathways towards diverse functional applications including electrocatalysis, non-enzymatic sensing in medical devices, energy harvesting and storage." @default.
- W3082291010 created "2020-09-08" @default.
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- W3082291010 date "2020-10-01" @default.
- W3082291010 modified "2023-10-12" @default.
- W3082291010 title "Sulfonated graphene-modified electrodes for enhanced capacitive performance and improved electro-oxidation of hydrogen peroxide" @default.
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- W3082291010 doi "https://doi.org/10.1016/j.nanoso.2020.100531" @default.
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