Ultrasound-assisted hydrazine reduction method for the preparation of nickel nanoparticles, physicochemical characterization and catalytic application in Suzuki-Miyaura cross-coupling reaction

Adél Anna Ádám, Márton Szabados, Gábor Varga, Ádám Papp, Katalin Musza, Zoltán Kónya, Ákos Kukovecz, Pál Sipos, István Pálinkó

Research output: Contribution to journalArticle

Abstract

In the experimental work leading to this contribution, the parameters of the ultrasound treatment (temperature, output power, emission periodicity) were varied to learn about the effects of the sonication on the crystallization of Ni nanoparticles during the hydrazine reduction technique. The solids were studied in detail by X-ray diffractometry, dynamic light scattering, thermogravimetry, specific surface area, pore size analysis, temperature-programmed CO2/NH3 desorption and scanning electron microscopy. It was found that the thermal behaviour, specific surface area, total pore volume and the acid-base character of the solids were mainly determined by the amount of the nickel hydroxide residues. The highest total acidity was recorded over the solid under low-power (30 W) continuous ultrasonic treatment. The catalytic behaviour of the nanoparticles was tested in a Suzuki-Miyaura cross-coupling reaction over five samples prepared in the conventional as well as the ultrasonic ways. The ultrasonically prepared catalysts usually performed better, and the highest catalytic activity was measured over the nanoparticles prepared under low-power (30 W) continuous sonication.

Original languageEnglish
Article number632
JournalNanomaterials
Volume10
Issue number4
DOIs
Publication statusPublished - Apr 2020

Keywords

  • Acid-base properties
  • Activities in the Suzuki-Miyaura cross-coupling reaction
  • Nickel nanoparticles
  • Sonocrystallization
  • Structural and morphology characterization

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)

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