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Bi2MoO6 hierarchical microflowers for electrochemical oxygen evolution reaction

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Abstract Solvothermal Bi2MoO6 hierarchical microflowers synthesis has been successfully attempted. Methanol, ethanol and isopropanol have been mediated to synthesize three kinds of Bi2MoO6 hierarchical microflowers. Highly oriented (311) plane growth… Click to show full abstract

Abstract Solvothermal Bi2MoO6 hierarchical microflowers synthesis has been successfully attempted. Methanol, ethanol and isopropanol have been mediated to synthesize three kinds of Bi2MoO6 hierarchical microflowers. Highly oriented (311) plane growth of orthorhombic Bi2MoO6 hierarchical microflowers have been confirmed. Interstitial vacancies and its role on electrochemical activity have been extensively discussed. Electrode fabrication was constructively done by using Ni foam substrate. Half cell arrangement of each electrode in alkaline medium has been designed to measure the electrochemical activity towards water oxidation. High current density of 356 mA/cm2 was afforded by Bi2MoO6 hierarchical microflowers mediated by ethanol solvent during synthesis. Low Tafel slope value of 43 mV/dec has been reported to obtain 10 mA/cm2 current density. Higher conductivity long with very good electron transportation has been achieved and is also adapted for 12 h long time stability test and achieved 86% of retention in its performance. Hence, optimally prepared Bi2MoO6 hierarchical microflowers could be an efficient electrode for clean energy fabrication.

Keywords: microflowers electrochemical; bi2moo6 hierarchical; electrochemical oxygen; evolution reaction; oxygen evolution; hierarchical microflowers

Journal Title: International Journal of Hydrogen Energy
Year Published: 2021

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