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<p>A novel magnetic nanocatalyst Fe/Ag@pumice, was successfully synthesized by immobilizing bimetallic Fe (Iron) and Ag (Silver) nanoparticles onto pumice (porous volcanic rock). The structure, morphology, and magnetic properties of this heterogeneous catalyst have been identified by Scanning Electron Microscopy, Transmission Electron Microscopy, X-ray Powder Diffraction, Inductively Coupled Plasma, Thermal Gravimetric Analysis, Brunauer–Emmett–Teller, Fourier Transforms Infrared, Energy Dispersive X-ray, H<sub>2</sub>-Temperature Programmed Reduction, and Vibrating Sample Magnetometer. The Fe/Ag@pumice catalyst demonstrated high efficiency in catalyzing the synthesis of 5-substituted 1H tetrazoles and the reduction of various nitro compounds under green reaction conditions. This innovative catalytic system offers significant advantages, including facile separation, thermal stability, high yields, and reduced reaction times, making it a promising candidate for sustainable chemical transformations.</p>

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Magnetic Bimetallic Fe/Ag@Pumice Nanoparticles: A Green Catalyst for Reduction of Nitro Compounds and Synthesis of 1H-tetrazoles

  • 期刊论文

  • 发表日期：

    2026年6月30日

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  • Mohammad Ghadermazi,
  • Setareh Moradi,
  • Atefeh Charabeh,
  • Mozhdeh Mohammadi,
  • Roya Mozafari

摘要

A novel magnetic nanocatalyst Fe/Ag@pumice, was successfully synthesized by immobilizing bimetallic Fe (Iron) and Ag (Silver) nanoparticles onto pumice (porous volcanic rock). The structure, morphology, and magnetic properties of this heterogeneous catalyst have been identified by Scanning Electron Microscopy, Transmission Electron Microscopy, X-ray Powder Diffraction, Inductively Coupled Plasma, Thermal Gravimetric Analysis, Brunauer–Emmett–Teller, Fourier Transforms Infrared, Energy Dispersive X-ray, H2-Temperature Programmed Reduction, and Vibrating Sample Magnetometer. The Fe/Ag@pumice catalyst demonstrated high efficiency in catalyzing the synthesis of 5-substituted 1H tetrazoles and the reduction of various nitro compounds under green reaction conditions. This innovative catalytic system offers significant advantages, including facile separation, thermal stability, high yields, and reduced reaction times, making it a promising candidate for sustainable chemical transformations.