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Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study

DOI: 10.1063/1.3249578 DOI Help

Authors: R. S. Cutting (University of Manchester) , R. A. D. Pattrick (University of Manchester) , J. R. Lloyd (University of Manchester) , E. Arenholz (LBL) , V. S. Coker (University of Manchester) , C. I. Pearce (University of Manchester) , N. D. Telling (University of Manchester) , G. Van Der Laan (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Physics Letters , VOL 95 (16)

State: Published (Approved)
Published: October 2009

Abstract: Biologically synthesized magnetite (Fe 3 O 4 ) nanoparticles are studied using x-rayabsorption and x-raymagnetic circular dichroism following exposure to hexavalent Cr solution. By examining their magnetic state, Cr cations are shown to exist in trivalent form on octahedral sites within the magnetite spinel surface. The possibility of reducing toxic Cr(VI) into a stable, nontoxic form, such as a Cr 3+ -spinel layer, makes biogenic magnetite nanoparticles an attractive candidate for Cr remediation.

Journal Keywords: Aqueous Cr(Vi); Absorption

Subject Areas: Environment

Instruments: NONE-No attached Diamond beamline