Title
Physical and arsenic adsorption properties of maghemite and magnetite sub-microparticles
Date Issued
01 April 2018
Access level
open access
Resource Type
journal article
Author(s)
Bravo-C. J.
Herrera-Trejo M.
Montejo-Alvaro F.
Zarate A.
Perry D.L.
Mtz-Enriquez A.I.
Publisher(s)
Elsevier B.V.
Abstract
The topotactic transformation from magnetite to maghemite sub-microparticles was demonstrated by a variety of techniques that include X-ray diffraction, Raman spectroscopy, electron microscopy, Mössbauer spectroscopy, magnetic measurements, and vis-NIR diffuse reflectance. The physical, chemical, and morphological properties of the particles were correlated with their adsorptive properties in water with respect to arsenic (V). The adsorptive properties of the iron oxide are increased by changing the crystal phases involved, specifically, the transformation of magnetite to maghemite. Maghemite sub-microparticles are capable of efficiently decreasing the arsenic content in water from 100 ppb to below the World Health Organization (WHO) guideline of 10 ppb.
Start page
594
End page
601
Volume
451
Language
English
OCDE Knowledge area
Ciencia de los polímeros
Subjects
Scopus EID
2-s2.0-85036458238
Source
Journal of Magnetism and Magnetic Materials
ISSN of the container
03048853
Source funding
U.S. Department of Energy
Sponsor(s)
This work was supported by the “Programa de Atracción e Inserción de Capital Humano Avanzado” MEC #80150069 and Proyecto Anillo ACT1204. The authors wish to thank the Archaeometry Lab (Universidad Nacional Mayor de San Marcos) for the Mössbauer measurements, and to the Magnetism Lab (Geology Department of UCN). DLP wishes to acknowledge support by the U.S. Department of Energy under Contract No. DE-ACO3-76SF00098 . MEM acknowledges Cinvestav, for supporting a research stay in Saltillo.
Sources of information:
Directorio de Producción Científica
Scopus