Photoassisted Preparation of Cobalt Phosphate/Graphene Oxide Composites: A Novel Oxygen-Evolving Catalyst with High Efficiency

Authors

  • Jingqi Tian,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, Jilin, PR China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
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  • Haiyan Li,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, Jilin, PR China
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  • Abdullah M. Asiri,

    1. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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  • Abdulrahman O. Al-Youbi,

    1. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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  • Xuping Sun

    Corresponding author
    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, Jilin, PR China
    2. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    3. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    • State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun 130022, Jilin, PR China.
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Abstract

original image

Cobalt phosphate (CoPi) nanoplates can be integrated with graphene oxide (GO) by photochemical deposition from an aqueous solution under visible-light illumination using GO as a photocatalyst. The use of the CoPi/GO composites as an oxygen-evolving catalyst with high efficiency is demonstrated. Integrating CoPi with GO leads to reduction of the overvoltage and enhancement of the photocurrent.

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