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Abstract <p>In this work, a mesoporous carbon (MPC) material was prepared from teak wood (<i>Tectonagrandis</i>) sawdust. Further, a composite of molybdenum sulphide (MoS<sub>2</sub>) and MPC (MPC–MoS<sub>2</sub>) was prepared. The synthesised materials were characterized by different spectroscopic and microscopic techniques. Fourier transforms infrared spectrum of MPC–MoS<sub>2</sub> indicates a weak interaction between MPC and MoS<sub>2</sub>. Raman studies revealed a slight decrease in the graphitization (compared to MPC) of the MPC–MoS<sub>2</sub> due to the integration of MoS<sub>2</sub> on MPC. X-ray diffraction patterns of MPC–MoS<sub>2</sub> demonstrates the hybrid nature of the composite. Scanning electron microscopy images expose the morphology of the MPC–MoS<sub>2</sub> as a rough and granular surface with small-sized flake-like appearances due to the presence of MoS<sub>2</sub> on the surface of MPC. Hydrodynamic voltammetry studies on the MPC–MoS<sub>2</sub> material disclose an efficient oxygen reduction activity. Based on the rotating ring disc electrode studies, a direct four-electron reduction of oxygen was established. Therefore, MPC–MoS<sub>2</sub> could be employed as an efficient low-cost material to replace the high-cost Pt-based oxygen reduction catalysts which are currently being used in commercial fuel cells.</p> Graphical Abstract <p>Scheme: Indicating the preparation of MPC using Teak’s wood saw dust, formation of GC/MPC-MoS<sub>2</sub> and its application towards electrochemical oxygen reduction reaction.</p> <p></p>

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Teak wood-derived mesoporous carbon and its composite with molybdenum sulphide for electrochemical oxygen reduction

  • 期刊论文

  • 发表日期：

    2025年2月26日

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  • Narvdeshwar Kumar,
  • Smita Singh,
  • Shubham Joshi,
  • Mamta Yadav,
  • Devesh Kumar Singh,
  • Piyush Kumar Sonkar,
  • Vellaichamy Ganesan

摘要

Abstract

In this work, a mesoporous carbon (MPC) material was prepared from teak wood (Tectonagrandis) sawdust. Further, a composite of molybdenum sulphide (MoS2) and MPC (MPC–MoS2) was prepared. The synthesised materials were characterized by different spectroscopic and microscopic techniques. Fourier transforms infrared spectrum of MPC–MoS2 indicates a weak interaction between MPC and MoS2. Raman studies revealed a slight decrease in the graphitization (compared to MPC) of the MPC–MoS2 due to the integration of MoS2 on MPC. X-ray diffraction patterns of MPC–MoS2 demonstrates the hybrid nature of the composite. Scanning electron microscopy images expose the morphology of the MPC–MoS2 as a rough and granular surface with small-sized flake-like appearances due to the presence of MoS2 on the surface of MPC. Hydrodynamic voltammetry studies on the MPC–MoS2 material disclose an efficient oxygen reduction activity. Based on the rotating ring disc electrode studies, a direct four-electron reduction of oxygen was established. Therefore, MPC–MoS2 could be employed as an efficient low-cost material to replace the high-cost Pt-based oxygen reduction catalysts which are currently being used in commercial fuel cells.

Graphical Abstract

Scheme: Indicating the preparation of MPC using Teak’s wood saw dust, formation of GC/MPC-MoS2 and its application towards electrochemical oxygen reduction reaction.