Kinetics of solution crystal growth of strengite, FePO4,2H2O

Hans E. Lundager Madsen*, Christian Bender Koch

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

10 Citations (Scopus)

Abstract

The iron(III) phosphate strengite, FePO4,2H2O, has been precipitated at 25 °C by mixing solutions of iron alum and ammonium phosphate. The rate of crystallization has been determined by pH recording. Three stages of crystal growth kinetics could be distinguished: (1) mononuclear growth, (2) polynuclear growth and, in a few cases, (3) spiral growth (BCF mechanism). From the first two, the value of edge free energy λ = 87 ± 1 pJ/m was found. The identity of the precipitate was verified by SEM, XRD and Mössbauer spectroscopy.

Original languageEnglish
JournalJournal of Crystal Growth
Volume482
Pages (from-to)9-14
Number of pages6
ISSN0022-0248
DOIs
Publication statusPublished - 2018

Keywords

  • A1. Surface processes
  • A2. Growth from solutions
  • B1. Iron compounds
  • B1. Minerals
  • B1. Phosphates

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