Morphology of synthetic goethite particles

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

doi:10.1016/j.jcis.2003.10.032

Morphology of synthetic goethite particles

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

Laboratory of Molecular Science and Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

69 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 language	English
Pages (from-to)	261-269
Number of pages	9
Journal	Journal of Colloid and Interface Science
Volume	271
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2003.10.032
Publication status	Published - Jan 2004
MoE publication type	A1 Journal article-refereed

Keywords

AFM
Goethite
Morphology of elongated particles
Particle size
SEM

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10.1016/j.jcis.2003.10.032

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AB - 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.

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KW - Morphology of elongated particles

KW - Particle size

KW - SEM

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JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

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Morphology of synthetic goethite particles

Abstract

Keywords

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