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<p>The aim of this paper is to study the catalytic properties of copper doped-titanate nanotubes (Cu<b>/</b>TiNTs) in the direct synthesis of 1,2,3-triazoles compounds by microwave irradiation. The catalysts were prepared using two steps hydrothermal and deposition precipitation with urea. The nanotubes were used as support and were prepared by hydrothermal method. The copper nanoparticles were introduced on the nanotubes surface using deposition precipitation with urea (DPU) method. The obtained catalysts were characterized using different techniques: XRD, TEM, SEM, ICP, FTIR spectroscopy, Raman spectroscopy and adsorption–desorption of N<sub>2</sub>. Regarding the synthesis of heterocycles, it has been found that these doped nanotubes are interested to catalyze the cycloaddition reaction of aryl azides with activated alkenes under both conventional heating and microwave irradiation conditions. High yields up to 99% of 1,2,3-triazole were obtained. The salient features of the present study are shorter reaction time, mild reaction conditions, reusability of the catalyst, and environmentally benign protocols. Finally, some of the 1,2,3-triazoles such synthesized were evaluated for their fungicidal activity.</p>

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Activity of copper nanoparticles supported on titanate nanotubes to synthetize 1,2,3-triazoles by microwave irradiation

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • Samira Hamza Reguig,
  • Sarah Zeghada,
  • Mounia-Aouicha Bouayed,
  • Nawal Ameur,
  • Nisserine Hamini Kadar,
  • Clara M. Gomez,
  • Ghaniya Ferouani,
  • Sumeya Bedrane,
  • Bachir Redouane,
  • Ghenia Bentabed Ababsa,
  • Florence Mongin

摘要

The aim of this paper is to study the catalytic properties of copper doped-titanate nanotubes (Cu/TiNTs) in the direct synthesis of 1,2,3-triazoles compounds by microwave irradiation. The catalysts were prepared using two steps hydrothermal and deposition precipitation with urea. The nanotubes were used as support and were prepared by hydrothermal method. The copper nanoparticles were introduced on the nanotubes surface using deposition precipitation with urea (DPU) method. The obtained catalysts were characterized using different techniques: XRD, TEM, SEM, ICP, FTIR spectroscopy, Raman spectroscopy and adsorption–desorption of N2. Regarding the synthesis of heterocycles, it has been found that these doped nanotubes are interested to catalyze the cycloaddition reaction of aryl azides with activated alkenes under both conventional heating and microwave irradiation conditions. High yields up to 99% of 1,2,3-triazole were obtained. The salient features of the present study are shorter reaction time, mild reaction conditions, reusability of the catalyst, and environmentally benign protocols. Finally, some of the 1,2,3-triazoles such synthesized were evaluated for their fungicidal activity.