Journal article
Effect of Impurities on the Redox Properties of Goethite
Environmental science & technology, Vol.59(16), pp.7799-8294
04/29/2025
DOI: 10.1021/acs.est.4c13480
PMID: 40254805
Abstract
Iron oxide minerals regulate the flux of electrons in the environment and are important hosts for trace and minor, yet critical, elements. Here, we present the first evidence of a direct link between the local coordination environments of Ni and Zn and the redox properties of their host phase goethite (α-FeOOH), the most abundant Fe(III) (oxyhydr)oxide at Earth's surface. We used aqueous redox measurements to show that the redox potential
, and hence the mineral's stability, follows the order: pure goethite ≥ Zn-goethite > Ni-goethite. Parallel X-ray absorption and scattering measurements demonstrate, using quantum-informed analysis, that the local coordination environment of the smaller impurity, Ni, causes more bulk strain energy than Zn, which nearly accounts for the difference in
between Ni- and Zn-goethite. Our theory-informed, experimental study reveals how two common impurities affect the stability of goethite with implications for the biogeochemical reactivity of Fe(III) (oxyhydr)oxide in mediating elemental and electron fluxes in the environment.
Details
- Title: Subtitle
- Effect of Impurities on the Redox Properties of Goethite
- Creators
- Drew E Latta - University of IowaSebastian T Mergelsberg - Pacific Northwest National LaboratoryDuo Song - Pacific Northwest National LaboratoryEric J Bylaska - Pacific Northwest National LaboratoryMichelle M Scherer - Deparment of Civil and Environmental Engineering, IIHR-Hydroscience and Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesBryanna Popejoy - Deparment of Civil and Environmental Engineering, IIHR-Hydroscience and Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesSarah A Saslow - Pacific Northwest National LaboratoryJeffrey G Catalano - Washington University in St. LouisEugene S Ilton - Pacific Northwest National Laboratory
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.59(16), pp.7799-8294
- DOI
- 10.1021/acs.est.4c13480
- PMID
- 40254805
- NLM abbreviation
- Environ Sci Technol
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Publisher
- American Chemical Society
- Grant note
- Basic Energy Sciences: FWP 56674 U.S. Department of Energy (DOE) Office of Science, Office of Basic Energy Science, through the Geosciences Program: DE-AC02-06CH11357 DOE Office of Science by Argonne National Laboratory: DE-AC05-76RL01830 DOE's Office of Biological and Environmental ResearchDOE
The work was supported by the U.S. Department of Energy (DOE) Office of Science, Office of Basic Energy Science, through the Geosciences Program (FWP 56674) at Pacific Northwest National Laboratory (PNNL). This research used resources of the Advanced Photon Source; a U.S. Department of Energy (DOE) Office of Science user facility operated for the DOE Office of Science by Argonne National Laboratory under Contract no. DE-AC02-06CH11357.A portion of this research was performed using the Environmental and Molecular Sciences Laboratory, a national user facility at PNNL sponsored by DOE's Office of Biological and Environmental Research. PNNL is a multiprogram national laboratory operated by Battelle Memorial Institute under contract no. DE-AC05-76RL01830 for the DOE.
- Language
- English
- Electronic publication date
- 04/20/2025
- Date published
- 04/29/2025
- Academic Unit
- Civil and Environmental Engineering; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984813159802771
Metrics
1 Record Views