在氧气存在的氧化剂双金属镍铁纳米粒子的形成增强.pdf
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Environ. Sci. Technol. 2008, 42, 8528–8533
Enhanced Formation of Oxidants or is converted into an oxidant by reaction with Fe(II) (i.e.,
Fenton reaction; reaction 3). The identity of oxidant produced
from Bimetallic Nickel-Iron by reaction 3 is uncertain. Under acidic conditions, it appears
to be hydroxyl radical (•OH), but at pH values above 5, a
Nanoparticles in the Presence of different species such as Fe(IV) (e.g., FeO2+) may be formed
Oxygen (10-12).
2H+
Fe0 +O 98 Fe2++H O (1)
(s) 2 2 2
C H A N G H A L E E A N D D A V I D L . S E D L A K *
Department of Civil and Environmental Engineering, 657 Davis 2H+
Hall, University of California, Berkeley, California 94720 Fe0 +H O 98 Fe2++2H O (2)
(s) 2 2 2 2
Received July 14, 2008. Revised manuscript received
2+ 3+ • -
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