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<p>The oxygen evolution reaction (OER) is a vital component of electrochemical energy transformation procedures; nevertheless, the development of practical and efficient electrocatalysts for this reaction has been difficult. This research has shown that the hydrothermally synthesized Dy<sub>2</sub>O<sub>3</sub>/g-CN electrocatalyst is actually used catalyzing in OER. The textural and structural characteristics of fabricated catalysts were examined using physical techniques. Nitrogen adsorption–desorption analysis specified a mesoporous structure grounded on the adsorption isotherm. The addition of material on graphitic carbon nitride (g-CN) aids in reducing the initial capacities for the OER process. The electrocatalytic activity and electrical conductivity of Dy<sub>2</sub>O<sub>3</sub>/g-CN catalysts are exceptional because of their distinct mesoporous structure. The overpotential, Tafel slope, and stability of the developed material are subsequently assessed by electrochemical characterizations in alkaline media in 1&#xa0;M KOH. As, associated with Dy<sub>2</sub>O<sub>3</sub> and Dy<sub>2</sub>O<sub>3</sub>/g-CN exhibited a significant overpotential of 262.26&#xa0;mV at the current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup>. The Tafel slope of the Dy<sub>2</sub>O<sub>3</sub>/g-CN nanocomposite was only 38.5&#xa0;mV dec<sup>−1</sup>, also had stability at about 30&#xa0;h. The material's conductivity was found to be increased by the larger ratio of catalytic active sites and rapid transfer of electrons. The results presented here offer a useful framework for creating electrocatalysts that improve their electrocatalytic characteristics. Thus, this research demonstrates that Dy<sub>2</sub>O<sub>3</sub>/g-CN is an efficient electrocatalyst for OER.</p>

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Integrating g-CN Nanosheets into Dy2O3 Decorated for Robust Water Splitting Activity

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • Mah Noor Ali,
  • Abhinav Kumar,
  • Imen Safra,
  • Ahmed Hussain Jawhari,
  • Hala M. Abo-Dief

摘要

The oxygen evolution reaction (OER) is a vital component of electrochemical energy transformation procedures; nevertheless, the development of practical and efficient electrocatalysts for this reaction has been difficult. This research has shown that the hydrothermally synthesized Dy2O3/g-CN electrocatalyst is actually used catalyzing in OER. The textural and structural characteristics of fabricated catalysts were examined using physical techniques. Nitrogen adsorption–desorption analysis specified a mesoporous structure grounded on the adsorption isotherm. The addition of material on graphitic carbon nitride (g-CN) aids in reducing the initial capacities for the OER process. The electrocatalytic activity and electrical conductivity of Dy2O3/g-CN catalysts are exceptional because of their distinct mesoporous structure. The overpotential, Tafel slope, and stability of the developed material are subsequently assessed by electrochemical characterizations in alkaline media in 1 M KOH. As, associated with Dy2O3 and Dy2O3/g-CN exhibited a significant overpotential of 262.26 mV at the current density of 10 mA cm−2. The Tafel slope of the Dy2O3/g-CN nanocomposite was only 38.5 mV dec−1, also had stability at about 30 h. The material's conductivity was found to be increased by the larger ratio of catalytic active sites and rapid transfer of electrons. The results presented here offer a useful framework for creating electrocatalysts that improve their electrocatalytic characteristics. Thus, this research demonstrates that Dy2O3/g-CN is an efficient electrocatalyst for OER.