Physical and arsenic adsorption properties of maghemite and magnetite sub-microparticles

M. E. Mejia-Santillan, N. Pariona, J. Bravo-C., M. Herrera-Trejo, F. Montejo-Alvaro, A. Zarate, D. L. Perry, A. I. Mtz-Enriquez

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29 Citas (Scopus)


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.

Idioma originalInglés
Páginas (desde-hasta)594-601
Número de páginas8
PublicaciónJournal of Magnetism and Magnetic Materials
EstadoPublicada - 1 abr. 2018
Publicado de forma externa

Nota bibliográfica

Publisher Copyright:
© 2017 Elsevier B.V.


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