Issue 51, 2021

Mackinawite formation from elemental iron and sulfur


Sulfur-assisted corrosion is a process known to material scientists for many decades now. Though the corrosion of iron in the presence of sulfur has been studied extensively, it has never been used to intentionally synthesize mackinawite. In contrast to the conventional preparation of mackinawite by precipitation, the synthesis from the elements can be carried out without additional ions. This makes it possible to investigate the influence of any dissolved salts on the mackinawite formation and its properties. We found that the addition of NaCl significantly accelerates the reaction and furthermore influences the Fe2+ ion content of the formed mackinawite itself. This finding leads us to propose a novel model of charged layers which can be used to explain some of the inconsistencies found in the literature regarding the structure and particle characteristics of nano-mackinawite.

Graphical abstract: Mackinawite formation from elemental iron and sulfur

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Article information

Article type
11 May 2021
19 Sep 2021
First published
01 Oct 2021
This article is Open Access
Creative Commons BY license

RSC Adv., 2021,11, 32464-32475

Mackinawite formation from elemental iron and sulfur

R. Bolney, M. Grosch, M. Winkler, J. van Slageren, W. Weigand and C. Robl, RSC Adv., 2021, 11, 32464 DOI: 10.1039/D1RA03705F

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