Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3249578
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Funding
- EPSRC [EP/D057310/1, EP/D058767/1]
- BBSRC [BB/E003788/1]
- U. S. Department of Energy [DE-AC02-05CH11231]
- BBSRC [BB/E004601/1, BB/E003788/1] Funding Source: UKRI
- EPSRC [EP/D058767/1, EP/D057310/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/E004601/1, BB/E003788/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/D057310/1, EP/D058767/1] Funding Source: researchfish
- Natural Environment Research Council [NE/B503309/1] Funding Source: researchfish
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Biologically synthesized magnetite (Fe(3)O(4)) nanoparticles are studied using x-ray absorption and x-ray magnetic 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. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3249578]
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