Synthesis of MnOx water oxidation catalyst on fluorine-doped tin oxide with a dual-series cyclic voltammetry method

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    Abstract

    This Communication reports a new method for synthesizing manganese-based water oxidation catalysts in situ in aqueous media. The method provides powerful tunability of the electrodeposition process to enable independent control over the morphology of the catalytic film and the oxidation state of the catalyst. Our results show that the first cyclic voltammetry (CV) series produces a film with a nanoscale fibrous structure, whereas the second CV series improves its catalytic performance by enhancing the oxidation state of the film without damaging the existing surface morphology. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the MnOx film, CV was used to assess the catalyst functionality, and long-term amperometry was used to assess the stability.

    Original languageEnglish (US)
    Pages (from-to)709-712
    Number of pages4
    JournalChemElectroChem
    Volume3
    Issue number5
    DOIs
    StatePublished - 2016

    Profile

    Avian Leukosis
    Afferent Loop Syndrome
    Ethane
    Arthroscopy
    Cyclic voltammetry
    Oxidation
    Catalysts
    Water
    Verbal Reinforcement
    Bibliography of Medicine
    Cerebellar Ataxia
    Blood Flow Velocity
    Electrodeposition
    Transmission electron microscopy
    Scanning electron microscopy
    Communication
    Tin oxides
    Fluorine
    Manganese
    Surface morphology

    Keywords

    • Electrocatalysis
    • Electrodeposition
    • Hydrogen
    • Manganese oxide
    • Water splitting

    ASJC Scopus subject areas

    • Catalysis
    • Electrochemistry

    Cite this

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    title = "Synthesis of MnOx water oxidation catalyst on fluorine-doped tin oxide with a dual-series cyclic voltammetry method",
    abstract = "This Communication reports a new method for synthesizing manganese-based water oxidation catalysts in situ in aqueous media. The method provides powerful tunability of the electrodeposition process to enable independent control over the morphology of the catalytic film and the oxidation state of the catalyst. Our results show that the first cyclic voltammetry (CV) series produces a film with a nanoscale fibrous structure, whereas the second CV series improves its catalytic performance by enhancing the oxidation state of the film without damaging the existing surface morphology. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the MnOx film, CV was used to assess the catalyst functionality, and long-term amperometry was used to assess the stability.",
    keywords = "Electrocatalysis, Electrodeposition, Hydrogen, Manganese oxide, Water splitting",
    author = "Hao Yuan and Lunt, {Richard R.} and Blanchard, {Gary J.} and Ofoli, {Robert Y.}",
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    journal = "ChemElectroChem",
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    AU - Lunt,Richard R.

    AU - Blanchard,Gary J.

    AU - Ofoli,Robert Y.

    PY - 2016

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    N2 - This Communication reports a new method for synthesizing manganese-based water oxidation catalysts in situ in aqueous media. The method provides powerful tunability of the electrodeposition process to enable independent control over the morphology of the catalytic film and the oxidation state of the catalyst. Our results show that the first cyclic voltammetry (CV) series produces a film with a nanoscale fibrous structure, whereas the second CV series improves its catalytic performance by enhancing the oxidation state of the film without damaging the existing surface morphology. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the MnOx film, CV was used to assess the catalyst functionality, and long-term amperometry was used to assess the stability.

    AB - This Communication reports a new method for synthesizing manganese-based water oxidation catalysts in situ in aqueous media. The method provides powerful tunability of the electrodeposition process to enable independent control over the morphology of the catalytic film and the oxidation state of the catalyst. Our results show that the first cyclic voltammetry (CV) series produces a film with a nanoscale fibrous structure, whereas the second CV series improves its catalytic performance by enhancing the oxidation state of the film without damaging the existing surface morphology. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the MnOx film, CV was used to assess the catalyst functionality, and long-term amperometry was used to assess the stability.

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    KW - Hydrogen

    KW - Manganese oxide

    KW - Water splitting

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