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<p>We present an environmentally friendly approach to synthesizing ternary nanocomposite materials with ZrO<sub>2</sub>/NiO/RGO layers. These materials were extensively studied for their optical, structural, morphological, and energy dispersive X-ray (EDX) properties, as well as their XRD, FTIR, FESEM, Raman, PL, and BET analyses. The findings of scanning electron microscopy and transmission electron microscopy reveal that the wrinkled graphene sheets have a dense deposit of abundant ZrO<sub>2</sub> nanocrystals as a consequence of interfacial dynamics and favored heterogeneous nucleation. When exposed to visible light, the ZrO<sub>2</sub>/NiO/RGO ternary nanocomposite degraded MB and RhB at a rate of 100% and 99.9%, respectively, outperforming ZrO<sub>2</sub> and NiO. Along with a high rate constant (0.976&#xa0;min<sup>−1</sup>), the catalyst provides long-term stability (5 cycles). There has been a thorough investigation of the impact of pH and catalyst dose. The elevated surface area, increased number of hydroxyl groups, and oxygen-deficient metal oxide phase are the reasons for the superior degradation efficiency. When compared to ZrO<sub>2</sub> NPs, the scavenging ability of ZrO<sub>2</sub>/NiO/rGO was 97%. There was an observation that ZrO<sub>2</sub>/NiO/rGO composites effectively inhibited DPPH, a reaction that mostly occurred due to electron charge transport. Incorporating RGO as a strong electron transport channel significantly improved the H<sub>2</sub> generation activity of ZrO<sub>2</sub>/NiO. In comparison to pure ZrO<sub>2</sub> (528 µmolg<sup>−1</sup>h<sup>−1</sup>), the ZrO<sub>2</sub>/NiO/RGO composite achieved a maximum H<sub>2</sub> generation rate of 2015 µmolg<sup>−1</sup>h<sup>−1</sup>, an increase of almost 4.1 times. New opportunities for the easy, low-cost, and environmentally friendly synthesis of reduced graphene-based composite materials have emerged as a result of this study.</p>

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Multifunctional ZrO2/NiO/RGO Ternary Nanocomposites for Degradation of Organic Pollutants, H2 Production and Antioxidant Property

  • 期刊论文

  • 发表日期：

    2025年1月28日

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  • S. R. Bavaji,
  • A. Jafar Ahamed,
  • Mir Waqas Alam,
  • Ghayah M. Alsulaim,
  • Shima Sadaf

摘要

We present an environmentally friendly approach to synthesizing ternary nanocomposite materials with ZrO2/NiO/RGO layers. These materials were extensively studied for their optical, structural, morphological, and energy dispersive X-ray (EDX) properties, as well as their XRD, FTIR, FESEM, Raman, PL, and BET analyses. The findings of scanning electron microscopy and transmission electron microscopy reveal that the wrinkled graphene sheets have a dense deposit of abundant ZrO2 nanocrystals as a consequence of interfacial dynamics and favored heterogeneous nucleation. When exposed to visible light, the ZrO2/NiO/RGO ternary nanocomposite degraded MB and RhB at a rate of 100% and 99.9%, respectively, outperforming ZrO2 and NiO. Along with a high rate constant (0.976 min−1), the catalyst provides long-term stability (5 cycles). There has been a thorough investigation of the impact of pH and catalyst dose. The elevated surface area, increased number of hydroxyl groups, and oxygen-deficient metal oxide phase are the reasons for the superior degradation efficiency. When compared to ZrO2 NPs, the scavenging ability of ZrO2/NiO/rGO was 97%. There was an observation that ZrO2/NiO/rGO composites effectively inhibited DPPH, a reaction that mostly occurred due to electron charge transport. Incorporating RGO as a strong electron transport channel significantly improved the H2 generation activity of ZrO2/NiO. In comparison to pure ZrO2 (528 µmolg−1h−1), the ZrO2/NiO/RGO composite achieved a maximum H2 generation rate of 2015 µmolg−1h−1, an increase of almost 4.1 times. New opportunities for the easy, low-cost, and environmentally friendly synthesis of reduced graphene-based composite materials have emerged as a result of this study.