Linked Life Data

19068843

Source:http://linkedlifedata.com/resource/pubmed/id/19068843

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
22
pubmed:dateCreated
2008-12-11
pubmed:abstractText
Nanoparticulate zero-valent iron (nZVI) rapidly reacts with oxygen to produce strong oxidants capable of transforming organic contaminants in water. However,the low yield of oxidants with respect to the iron added normally limits the application of this system. Bimetallic nickel-iron nanoparticles (nNi-Fe; i.e., Ni-Fe alloy and Ni-coated Fe nanoparticles) exhibited enhanced yields of oxidants compared to nZVI. nNi-Fe (Ni-Fe alloy nanoparticles with [Ni]/[Fe] = 0.28 and Ni-coated Fe nanoparticles with [Ni]/[Fe] = 0.035) produced approximately 40% and 85% higher yields of formaldehyde from the oxidation of methanol relative to nZVI at pH 4 and 7, respectively. Ni-coated Fe nanoparticles showed a higher efficiency for oxidant production relative to Ni-Fe alloy nanoparticles based on Ni content. Addition of Ni did not increase the oxidation of 2-propanol or benzoic acid, indicating that Ni addition did not enhance hydroxyl radical formation. The enhancement in oxidant yield was observed over a pH range of 4-9. The enhanced production of oxidant by nNi-Fe appears to be attributable to two factors. First, the nNi-Fe surface is less reactive toward hydrogen peroxide (H2O2) than the nZVI surface, which favors the reaction of H2O2 with dissolved Fe(II) (the Fenton reaction). Second, the nNi-Fe surface promotes oxidant production from the oxidation of ferrous ion by oxygen at neutral pH values.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-11393995, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-12854713, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-15112830, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-15787365, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-16295871, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-17265958, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-17539546, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-17948788, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-18351103, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-18678027, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-18678028, http://linkedlifedata.com/resource/pubmed/commentcorrection/19068843-18961462
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0013-936X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
8528-33
pubmed:dateRevised
2010-9-23
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Enhanced formation of oxidants from bimetallic nickel-iron nanoparticles in the presence of oxygen.
pubmed:affiliation
Department of Civil and Environmental Engineering, 657 Davis Hall, University of California, Berkeley, California 94720, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural