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  • Phosphorus and Sulfur Co‐Doped Cobaltous Oxide Synthesized by an Inorganic‐Salt‐Assisted Method: Reaction Mechanism and Electrocatalytic Application

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    Accepted Manuscript (AM)
    Author(s)
    Roy, Jagadish Chandra
    Al-Mamun, Mohammad
    Yin, Huajie
    Dou, Yuhai
    Zhang, Lei
    Liu, Porun
    Wang, Yun
    Zhong, Yu Lin
    Zhao, Huijun
    Griffith University Author(s)
    ZHANG, LEI
    Liu, Porun
    Zhong, Yulin
    Dou, Yuhai
    Wang, Yun
    Zhao, Huijun
    Year published
    2020
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    Abstract
    Inorganic‐salt‐assisted non‐metallic heteroatom (phosphorus and sulphur) co‐doped cobaltous oxide (P/S‐CoO) has been reported. Potassium sulphate (K 2 SO 4 ) was used as inorganic source of sulphur (S), while triphenyl phosphine (PPh 3 ) was used as phosphorus (P) source. A stepwise mechanistic investigation into the doping process revealed the decomposition of PPh 3 triggered the release of both the elemental sulphur and phosphorus via a reducing reaction environment. The transformation of cobalt‐PPh 3 complex into cubic cobalt (II) oxide along with the successful co‐doping (P and S) was achieved by high temperature calcination ...
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    Inorganic‐salt‐assisted non‐metallic heteroatom (phosphorus and sulphur) co‐doped cobaltous oxide (P/S‐CoO) has been reported. Potassium sulphate (K 2 SO 4 ) was used as inorganic source of sulphur (S), while triphenyl phosphine (PPh 3 ) was used as phosphorus (P) source. A stepwise mechanistic investigation into the doping process revealed the decomposition of PPh 3 triggered the release of both the elemental sulphur and phosphorus via a reducing reaction environment. The transformation of cobalt‐PPh 3 complex into cubic cobalt (II) oxide along with the successful co‐doping (P and S) was achieved by high temperature calcination at 800 °C but preserved the bulk CoO crystalline structure. The as synthesized P/S‐CoO demonstrated an unprecedented enhancement on the oxygen evolution activity compare to that of pristine CoO with the current density of 10 mA/cm 2 at the overpotential of 293 mV in 1.0 M KOH electrolyte and profound stability at different current densities.
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    Journal Title
    ChemPlusChem
    DOI
    https://doi.org/10.1002/cplu.202000306
    Copyright Statement
    © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Phosphorus and Sulfur Co‐Doped Cobaltous Oxide Synthesized by an Inorganic‐Salt‐Assisted Method: Reaction Mechanism and Electrocatalytic Application, ChemPlusChem, 2020, which has been published in final form at https://doi.org/10.1002/cplu.202000306. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)
    Note
    This publication has been entered in Griffith Research Online as an advanced online version.
    Subject
    Chemical sciences
    Publication URI
    http://hdl.handle.net/10072/395366
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    • Journal articles

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