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<p>This study fabricated a solar-sensitive InVO<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> photocatalyst using an ultrasound-assisted wet impregnation technique. Characterization with XRD, FTIR, FE-SEM, UV-vis DRS, PL, and electrochemical impedance revealed that the InVO<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite decreased the energy gap from 2.76 eV to 2.66 eV compared to bare g-C<sub>3</sub>N<sub>4</sub> nanosheets. Additionally, the decreased photoluminescence intensity upon InVO<sub>4</sub> incorporation indicated efficient charge carrier separation and transport. The performance of the material was evaluated using photocatalytic water splitting with triethanolamine as a hole scavenger. The optimal 6 wt.% InVO<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite exhibited a remarkable six-fold increase in hydrogen generation rate (1356 μmolg<sup>-1</sup>h<sup>-1</sup>) compared to pure g-C<sub>3</sub>N<sub>4</sub>. Notably, the optimal catalyst shows a solar-to- hydrogen (STH) efficiency of 1.37%. At the InVO<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> interface, enhanced solar light absorption and effective charge carrier separation are responsible for this notable improvement in photocatalytic performance.</p><p></p>

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A facile preparation of solar light driven InVO4 loaded g-C3N4 photocatalyst for stable and efficient H2 production

  • 期刊论文

  • 发表日期：

    2025年9月23日

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  • Hafeez Yusuf Hafeez,
  • Adamu David Gaima Kafadi,
  • J. Mohammed,
  • Abdussalam Balarabe Suleiman,
  • Chifu E. Ndikilar,
  • Rabia Salihu Sa’id,
  • Ibrahim Muhammad,
  • Fayez K. Alharbi

摘要

This study fabricated a solar-sensitive InVO4-g-C3N4 photocatalyst using an ultrasound-assisted wet impregnation technique. Characterization with XRD, FTIR, FE-SEM, UV-vis DRS, PL, and electrochemical impedance revealed that the InVO4-g-C3N4 composite decreased the energy gap from 2.76 eV to 2.66 eV compared to bare g-C3N4 nanosheets. Additionally, the decreased photoluminescence intensity upon InVO4 incorporation indicated efficient charge carrier separation and transport. The performance of the material was evaluated using photocatalytic water splitting with triethanolamine as a hole scavenger. The optimal 6 wt.% InVO4-g-C3N4 composite exhibited a remarkable six-fold increase in hydrogen generation rate (1356 μmolg-1h-1) compared to pure g-C3N4. Notably, the optimal catalyst shows a solar-to- hydrogen (STH) efficiency of 1.37%. At the InVO4-g-C3N4 interface, enhanced solar light absorption and effective charge carrier separation are responsible for this notable improvement in photocatalytic performance.