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<p>In this study, we report a novel and practical tandem approach for synthesizing symmetric ketazines derived from the reaction of hydrazine hydrate and Acetophenone using nickel phosphate (NiP) as a heterogeneous nano-catalyst for the first time. The catalyst underwent comprehensive characterization using several techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy, Ultraviolet-visible Spectroscopy (UV-Vis), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDS), X-ray diffraction (XRD), and N<sub>2</sub> adsorption-desorption isotherm using BET and BJH methods to define their structure and properties. The results demonstrate that the catalyst exhibited a high surface area of 266.10 m<sup>2</sup>/g and a heterogeneous nano- structure with high stability and reusability. The synthesized ketazines were analysed using Infrared Spectroscopy (IR) and Nuclear Magnetic Resonance (NMR) spectroscopy. Additionally, the fluorescence properties of the ketazines were tested under various conditions, such as different concentrations and solvents. Also, the same molecules were used in the detection of Fe<sup>2+</sup> and Pb<sup>2+</sup> ions in water. Notably, significant alterations in the fluorescence properties were observed.</p>

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High-Efficient Synthesis of Fluorescent Ketazine Derivatives Using Nickel Phosphate Heterogeneous Catalyst

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Nassima Medjahed,
  • Zahira Kibou,
  • Amina Berrichi,
  • Ridha Hassaine,
  • Chewki Ziani-Cherif,
  • Redouane Bachir,
  • Noureddine Choukchou-Braham

摘要

In this study, we report a novel and practical tandem approach for synthesizing symmetric ketazines derived from the reaction of hydrazine hydrate and Acetophenone using nickel phosphate (NiP) as a heterogeneous nano-catalyst for the first time. The catalyst underwent comprehensive characterization using several techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy, Ultraviolet-visible Spectroscopy (UV-Vis), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDS), X-ray diffraction (XRD), and N2 adsorption-desorption isotherm using BET and BJH methods to define their structure and properties. The results demonstrate that the catalyst exhibited a high surface area of 266.10 m2/g and a heterogeneous nano- structure with high stability and reusability. The synthesized ketazines were analysed using Infrared Spectroscopy (IR) and Nuclear Magnetic Resonance (NMR) spectroscopy. Additionally, the fluorescence properties of the ketazines were tested under various conditions, such as different concentrations and solvents. Also, the same molecules were used in the detection of Fe2+ and Pb2+ ions in water. Notably, significant alterations in the fluorescence properties were observed.