Linked Life Data

20619873

Source:http://linkedlifedata.com/resource/pubmed/id/20619873

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-8-30
pubmed:abstractText
The oxidation of organic compounds in oxygen saturated aqueous suspensions of nanoparticulate zero valent iron (nZVI) is rapidly becoming an area of important consideration for environmental scientists and engineers. Through the production of reactive oxygen species, oxidative processes do occur but have been shown to be of limited efficiency. To increase efficiency for this process, the addition of electron shuttling molecules have been shown to enhance the oxidative capacity of nZVI. Laboratory experiments were conducted at pH 3.0 over a range of nZVI starting concentrations, and the reaction was monitored by following the oxidation of HCOOH and the production of H(2)O(2) with time. These studies confirm that the addition of the polyoxometallates (POM), sodium polyoxotungstate (Na(3)PW(12)O(40)), enhances the oxidative capacity of nZVI. Based on these results, the mechanism for the enhancement in oxidative capacity of nZVI is through two separate processes: (1) the POM out-competes H(2)O(2) for electrons from Fe(0) thereby increasing the H(2)O(2) concentration, and (2) the reduced form of the POM, PW(12)O(40)(-4), facilitates the cycling of Fe(III) to Fe(II) which enhances the homogeneous Fenton reaction.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1879-1298
pubmed:author
pubmed:copyrightInfo
Copyright (c) 2010 Elsevier Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
127-31
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Process optimization in use of zero valent iron nanoparticles for oxidative transformations.
pubmed:affiliation
Department of Chemistry, Lafayette College, Easton, PA 18042, United States.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't