DLVO Approximation Methods for Predicting the Attachment of Silver Nanoparticles to Ceramic Membranes

This article examines the influence of three common stabilizing agents (citrate, poly(vinylpyrrolidone) (PVP), and branched poly(ethylenimine) (BPEI)) on the attachment affinity of silver nanoparticles to ceramic water filters. Citrate-stabilized silver nanoparticles were found to have the highest a...

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Veröffentlicht in:Langmuir Jg. 32; H. 7; S. 1723 - 1731
Hauptverfasser: Mikelonis, Anne M, Youn, Sungmin, Lawler, Desmond F
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 23.02.2016
ISSN:1520-5827
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Abstract This article examines the influence of three common stabilizing agents (citrate, poly(vinylpyrrolidone) (PVP), and branched poly(ethylenimine) (BPEI)) on the attachment affinity of silver nanoparticles to ceramic water filters. Citrate-stabilized silver nanoparticles were found to have the highest attachment affinity (under conditions in which the surface potential was of opposite sign to the filter). This work demonstrates that the interaction between the electrical double layers plays a critical role in the attachment of nanoparticles to flat surfaces and, in particular, that predictions of double-layer interactions are sensitive to boundary condition assumptions (constant charge vs constant potential). The experimental deposition results can be explained when using different boundary condition assumptions for different stabilizing molecules but not when the same assumption was assumed for all three types of particles. The integration of steric interactions can also explain the experimental deposition results. Particle size was demonstrated to have an effect on the predicted deposition for BPEI-stabilized particles but not for PVP.
AbstractList This article examines the influence of three common stabilizing agents (citrate, poly(vinylpyrrolidone) (PVP), and branched poly(ethylenimine) (BPEI)) on the attachment affinity of silver nanoparticles to ceramic water filters. Citrate-stabilized silver nanoparticles were found to have the highest attachment affinity (under conditions in which the surface potential was of opposite sign to the filter). This work demonstrates that the interaction between the electrical double layers plays a critical role in the attachment of nanoparticles to flat surfaces and, in particular, that predictions of double-layer interactions are sensitive to boundary condition assumptions (constant charge vs constant potential). The experimental deposition results can be explained when using different boundary condition assumptions for different stabilizing molecules but not when the same assumption was assumed for all three types of particles. The integration of steric interactions can also explain the experimental deposition results. Particle size was demonstrated to have an effect on the predicted deposition for BPEI-stabilized particles but not for PVP.
Author Lawler, Desmond F
Mikelonis, Anne M
Youn, Sungmin
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  givenname: Sungmin
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  givenname: Desmond F
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  organization: Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin , 301 E. Dean Keeton Street, Mail Stop C1786, Austin, Texas 78712-1173, United States
BackLink https://www.ncbi.nlm.nih.gov/pubmed/26797148$$D View this record in MEDLINE/PubMed
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Snippet This article examines the influence of three common stabilizing agents (citrate, poly(vinylpyrrolidone) (PVP), and branched poly(ethylenimine) (BPEI)) on the...
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Title DLVO Approximation Methods for Predicting the Attachment of Silver Nanoparticles to Ceramic Membranes
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