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<p>In pursuit of efficient hydrogen generation and sustainable environmental remediation, a novel ternary heterojunction composite (g-C<sub>3</sub>N<sub>4</sub>)-MoS<sub>2</sub>@MOF has been successfully synthesized via a hydrothermal method. This advanced nanocomposite integrates graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), molybdenum disulfide (MoS<sub>2</sub>), and a metal–organic framework (MOF), aiming to enhance electrocatalytic performance. Structural characterization using X-ray diffraction (XRD) and Raman spectroscopy confirmed the phase purity and composition of the composite material, while field emission scanning electron microscopy (FESEM) revealed a distinctive morphology: flower-like g-C<sub>3</sub>N<sub>4</sub>, layered MoS<sub>2</sub>, and polished MOF fragments forming a robust composite matrix. Electrochemical studies demonstrated that hydrogen evolution follows the Volmer-Tafel mechanism, with a low Tafel slope of ~ 89&#xa0;mV/decade, indicating favorable reaction kinetics. Chronoamperometry confirmed the catalyst’s remarkable electrochemical stability over 12&#xa0;h. Furthermore, electrochemical impedance spectroscopy (EIS) performed at a constant potential of 0.146&#xa0;V across a broad frequency range (100&#xa0;MHz to 1&#xa0;Hz) confirmed effective charge transfer properties. This study presents a structurally durable and highly efficient catalyst for the hydrogen evolution reaction, emphasizing its potential for integration into next-generation clean energy and environmental remediation systems.</p>

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Design and electrochemical performance of a (g-C3N4)-MoS2@MOF composite as a durable catalyst for hydrogen evolution

  • 期刊论文

  • 发表日期：

    2025年6月7日

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  • Janakiraman V.,
  • Gokulkannan K.,
  • Anitha R.,
  • Ammal Dhanalakshmi M.,
  • Mohamed Abbas,
  • Vijayakumar Paranthaman,
  • Ganesh Kumar K.

摘要

In pursuit of efficient hydrogen generation and sustainable environmental remediation, a novel ternary heterojunction composite (g-C3N4)-MoS2@MOF has been successfully synthesized via a hydrothermal method. This advanced nanocomposite integrates graphitic carbon nitride (g-C3N4), molybdenum disulfide (MoS2), and a metal–organic framework (MOF), aiming to enhance electrocatalytic performance. Structural characterization using X-ray diffraction (XRD) and Raman spectroscopy confirmed the phase purity and composition of the composite material, while field emission scanning electron microscopy (FESEM) revealed a distinctive morphology: flower-like g-C3N4, layered MoS2, and polished MOF fragments forming a robust composite matrix. Electrochemical studies demonstrated that hydrogen evolution follows the Volmer-Tafel mechanism, with a low Tafel slope of ~ 89 mV/decade, indicating favorable reaction kinetics. Chronoamperometry confirmed the catalyst’s remarkable electrochemical stability over 12 h. Furthermore, electrochemical impedance spectroscopy (EIS) performed at a constant potential of 0.146 V across a broad frequency range (100 MHz to 1 Hz) confirmed effective charge transfer properties. This study presents a structurally durable and highly efficient catalyst for the hydrogen evolution reaction, emphasizing its potential for integration into next-generation clean energy and environmental remediation systems.