Morphology of synthetic goethite particles

Marek Kosmulski, Serge Durand-Vidal, Edward Maczka, Jarl B. Rosenholm

Research output: Contribution to journalArticleScientificpeer-review

71 Citations (Scopus)

Abstract

The specific surface area of synthetic goethite depends on the preparation: the Fe(III):OH ratio, the rate of base titration of Fe salt, and the temperature and time of crystallization. The crystals also have different morphologies as determined by SEM or TEM. Carbon coating is used to improve the quality of SEM images of nonconducting specimens. We show here that needle-like goethite particles become substantially thicker in the course of standard carbon coating, and the length-to-width ratio obtained for carbon-coated particles is lower than that for the original goethite particles. The morphology of the goethite particles was also studied by tapping mode AFM. © 2003 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)261-269
Number of pages9
JournalJournal of Colloid and Interface Science
Volume271
Issue number2
DOIs
Publication statusPublished - Jan 2004
MoE publication typeA1 Journal article-refereed

Keywords

  • AFM
  • Goethite
  • Morphology of elongated particles
  • Particle size
  • SEM

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