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Photoelectrochemical performance of thermally sulfurized CdxZn1-xS photoanode: Enhancement with reduced graphene oxide support

Author

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  • Zunain Ayaz, RanaMuhammad
  • Akyüz, Duygu
  • Uğuz, Özlem
  • Tanşık, İrem
  • Sarıoğlu, Cevat
  • Karaca, Fatma
  • Özkaya, Ali Rıza
  • Koca, Atıf

Abstract

In this study, photoelectrochemical performance of reduced graphene oxide (RGO)-CdxZn1-xS composites, which were synthesized through a novel two-steps thermal sulfurization process by using elemental sulfur, was reported. This is the first time that the two-step thermal sulfurization process with elemental sulfur for the preparation of photoanode based on RGO-CdxZn1-xS. The electrodes exhibited high photostability and photocurrent response in the presence of visible light. The presence of RGO in CdxZn1-xS as electron collector and transporter increased the photocurrents approximately 40%. Among the RGO-CdxZn1-xS composites, RGO-CdS photoanode yielded an extremely high photocurrent density of 6.5 mAcm−2 with the rate of hydrogen production rate of 551.1μmolh−1cm−2. This value of photocurrent density is almost 89% of its theoretical value. This is the maximum attained photocurrent density with superior stability in comparison with related literature.

Suggested Citation

  • Zunain Ayaz, RanaMuhammad & Akyüz, Duygu & Uğuz, Özlem & Tanşık, İrem & Sarıoğlu, Cevat & Karaca, Fatma & Özkaya, Ali Rıza & Koca, Atıf, 2020. "Photoelectrochemical performance of thermally sulfurized CdxZn1-xS photoanode: Enhancement with reduced graphene oxide support," Renewable Energy, Elsevier, vol. 162(C), pages 182-195.
    • Handle: RePEc:eee:renene:v:162:y:2020:i:c:p:182-195
    DOI: 10.1016/j.renene.2020.07.102
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    Cited by:

    1. Hamdani, I.R. & Bhaskarwar, A.N., 2021. "Recent progress in material selection and device designs for photoelectrochemical water-splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).

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