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<p>Currently, there has been considerable interest in developing heterojunction materials for the removal of dyes. However, there is a bottleneck in creating an impressive photocatalyst that can degrade organic pollutants propelled by visible light. The integration of graphitic nitride (C<sub>3</sub>N<sub>4</sub>) with NiO-MoO<sub>3</sub> is edified using a combination of polymerization and hydrothermal processes. The structural features of fabricated materials were then examined using various analytical techniques. The optimized C<sub>3</sub>N<sub>4</sub>/NiO-MoO<sub>3</sub> bestowed with Z-scheme achieved 94.8% degradation efficiency of RhB in the presence of visible light within 100&#xa0;min at a kinetic rate of 0.025&#xa0;min<sup>−1</sup>, which is four times higher than neat NiO-MoO<sub>3</sub>. The heterojunction C<sub>3</sub>N<sub>4</sub>/NiO-MoO<sub>3</sub> has enhanced striking photodegradation efficiency, limited charge recombination, and extended visible light radiation absorbance. The trapping experiment for radicals has revealed hydroxyl (<sup><b>⋅</b></sup>OH) and superoxide (<sup><b>⋅</b></sup>O<sub>2</sub><sup><b>−</b></sup>) radicals as key players in the photodegradation of RhB. Furthermore, C<sub>3</sub>N<sub>4</sub>/NiO-MoO<sub>3</sub> exhibited an 82% photodegradation efficiency even after four iterative cycles in the reusability test, demonstrating its potential for prolonged usage. The stability test indicated that the optimal material might retain sufficient crystallinity after use. This study demonstrated that C<sub>3</sub>N<sub>4</sub>/NiO-MoO<sub>3</sub> could effectively optimize the elimination of other pollutants, such as the RhB dye, from wastewater.</p>

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Heterogeneous bimetallic Ni-Mo oxide and C3N4 conjugation for boosted photocatalytic degradation of rhodamine B dye

  • 期刊论文

  • 发表日期：

    2025年7月26日

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  • Atef El Jery,
  • Moutaz Aldrdery,
  • Mohammad Ashraf Hossain,
  • Ismail Hossain,
  • Raj Moohan Murrari,
  • Ome Parkash Kumar,
  • Muhammad Jamshaid

摘要

Currently, there has been considerable interest in developing heterojunction materials for the removal of dyes. However, there is a bottleneck in creating an impressive photocatalyst that can degrade organic pollutants propelled by visible light. The integration of graphitic nitride (C3N4) with NiO-MoO3 is edified using a combination of polymerization and hydrothermal processes. The structural features of fabricated materials were then examined using various analytical techniques. The optimized C3N4/NiO-MoO3 bestowed with Z-scheme achieved 94.8% degradation efficiency of RhB in the presence of visible light within 100 min at a kinetic rate of 0.025 min−1, which is four times higher than neat NiO-MoO3. The heterojunction C3N4/NiO-MoO3 has enhanced striking photodegradation efficiency, limited charge recombination, and extended visible light radiation absorbance. The trapping experiment for radicals has revealed hydroxyl (⋅OH) and superoxide (⋅O2−) radicals as key players in the photodegradation of RhB. Furthermore, C3N4/NiO-MoO3 exhibited an 82% photodegradation efficiency even after four iterative cycles in the reusability test, demonstrating its potential for prolonged usage. The stability test indicated that the optimal material might retain sufficient crystallinity after use. This study demonstrated that C3N4/NiO-MoO3 could effectively optimize the elimination of other pollutants, such as the RhB dye, from wastewater.