Linked Life Data

20715866

Source:http://linkedlifedata.com/resource/pubmed/id/20715866

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
18
pubmed:dateCreated
2010-9-13
pubmed:abstractText
Dialkyl phthalate esters (DPEs), with endocrine disrupting functions, are widely used and categorized as priority pollutants. Carbon nanotubes (CNTs) as strong adsorbents could influence the fate, transport, and bioavailability of DPEs in the environment. Understanding adsorptive interactions between CNTs and DPEs is critical to the environmental applications of CNTs. Adsorption of DPEs by one type of single-walled CNTs (SWCNT) and three multiwalled CNTs (MWCNT) was evaluated. For a given CNT, the adsorptive affinity correlated well with hydrophobicity of DPEs with an order of dimethyl phthalate (DMP) < diethyl phthalate (DEP) < dibutyl phthalate (DBP). The normalized adsorption coefficient (K/K(HW)) of DPEs indicates that ?-? electron-donor-acceptor (EDA) interaction was also important for adsorption of DPEs (?-acceptor) on CNTs (?-donor). A ?-? charge-transfer band of EDA complexes (mixture of pyrene (PYR) as ?-donor and DPEs as ?-acceptor) showed their interaction strength in the order of DMP-PYR > DEP-PYR > DBP-PYR. Calculated monolayer adsorption capacities (log Q) were bigger (for DMP and DEP) than or approximately equal to (for DBP) the estimated adsorption capacities (log Q(0)), implying that the DPEs were adsorbed on the surface area of CNTs. For a given DPE, the adsorptive capacities decreased with the increasing outer diameters of CNTs in the order of SWCNT > MWCNT10 > MWCNT20 > MWCNT40.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1520-5851
pubmed:author
pubmed:issnType
Electronic
pubmed:day
15
pubmed:volume
44
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6985-91
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Adsorption of dialkyl phthalate esters on carbon nanotubes.
pubmed:affiliation
Civil & Environment Engineering School, University of Science & Technology Beijing, 100083 Beijing, China.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't