Ultrasonically-assisted mechanochemical synthesis of zinc aluminate spinel from aluminium-rich layered double hydroxide

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4 Citations (Scopus)

Abstract

An ultrasonically-assisted mechanochemical method was further improved to increase the yield of high-quality ZnAl 2 -LDH with carbonate interlayer anions. In the LDH formation, the rarely studied temperature, power and pulse character of ultrasound irradiation were investigated to determine the optimal parameters for the synthesis. The as-prepared samples were milled with varying the grinding frequency in order to convert the layered hydroxide structure into ZnAl 2 O 4 spinel. This was the first time that ZnAl 2 O 4 spinel formation was induced mechanochemically. The main method to identify the effects of ultrasonic and mechanochemical treatments was X-ray diffractometry; however, infrared spectroscopy, scanning electron microscopy, and thermal analysis were also applied to follow and compare the mechanochemically induced spinel formation to the more frequently used heat treatment.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalJournal of Solid State Chemistry
Volume272
DOIs
Publication statusPublished - Apr 1 2019

Keywords

  • IR
  • Mechanochemical treatment
  • SEM
  • Thermal characterization techniques
  • Ultrasonic irradiation
  • XRD
  • Zinc aluminate spinel
  • ZnAl -LDH

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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