IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i4p3129-d1062313.html
   My bibliography  Save this article

Enhanced Photoelectrochemical Water Oxidation on BiVO 4 Photoanodes Functionalized by Bimetallic Dicyanamide Molecular Catalysts

Author

Listed:
  • Xiaokang Wan

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Dashun Lu

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Xianyun Wang

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Gezhong Liu

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Yanming Fu

    (Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China)

  • Chao Hu

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Nai Rong

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Haitao Wang

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

  • Zude Cheng

    (Anhui Advanced Technology Research Institute of Green Building, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China)

Abstract

A novel hybrid structure of bimetallic dicyanamide decorated BiVO 4 is developed via a simple method to accelerate interfacial water oxidation kinetics. Two types of bimetallic dicyanamides, CoNi(dca) 2 and CoFe(dca) 2 , are coated on BiVO 4 photoanodes and are found to exhibit far more enhanced PEC performance than Co(dca) 2 or Ni(dca) 2 as cocatalysts. The successful deposition of metal dicyanamides on BiVO 4 photoanodes is confirmed by physical characterizations including X-ray photoelectron spectroscopy (XPS). The optimized Co 0.9 Ni 0.1 (dca) 2 /BiVO 4 photoanode exhibits the highest photocurrent density of 2.58 mA/cm 2 at 1.23 V vs. RHE under 100 mW/cm 2 AM 1.5 G irradiation, which is 2.5 times that of bare BiVO 4 . The substantial enhancement of PEC performance can be ascribed to the advantageous interfacial charge transfer and improved charge injection efficiencies. This work presents a feasible strategy using different types of bimetallic dicyanamides to design a modified BiVO 4 -based photoanode system for enhanced water oxidation efficiency.

Suggested Citation

  • Xiaokang Wan & Dashun Lu & Xianyun Wang & Gezhong Liu & Yanming Fu & Chao Hu & Nai Rong & Haitao Wang & Zude Cheng, 2023. "Enhanced Photoelectrochemical Water Oxidation on BiVO 4 Photoanodes Functionalized by Bimetallic Dicyanamide Molecular Catalysts," Sustainability, MDPI, vol. 15(4), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:3129-:d:1062313
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/4/3129/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/4/3129/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:3129-:d:1062313. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.