Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water

Rebecca J.L. Welbourn; Seung Yeon Lee; Philipp Gutfreund; Arwel Hughes; Ali Zarbakhsh; Stuart M. Clarke

doi:10.1021/la504837s

Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water

Rebecca J.L. Welbourn, Seung Yeon Lee, Philipp Gutfreund, Arwel Hughes, Ali Zarbakhsh, Stuart M. Clarke

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The adsorption of a phosphorus analogue of the surfactant AOT, sodium bis(2-ethylhexyl) phosphate (NaDEHP), at the water/alumina interface is described. The material is found to adsorb as an essentially water-free bilayer from neutron reflection measurements. This is similar to the behavior of AOT under comparable conditions, although AOT forms a thicker, more hydrated layer. The NaDEHP shows rather little variation with added salt, but a small thickening of the layer on increasing the pH, in contrast to the behavior of AOT.

Original language	English
Pages (from-to)	3377-3384
Number of pages	8
Journal	Langmuir
Volume	31
Issue number	11
DOIs	https://doi.org/10.1021/la504837s
State	Published - Mar 24 2015
Externally published	Yes

Funding

Funders	Funder number
Engineering and Physical Sciences Research Council
University of Cambridge

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10.1021/la504837s

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title = "Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water",

abstract = "The adsorption of a phosphorus analogue of the surfactant AOT, sodium bis(2-ethylhexyl) phosphate (NaDEHP), at the water/alumina interface is described. The material is found to adsorb as an essentially water-free bilayer from neutron reflection measurements. This is similar to the behavior of AOT under comparable conditions, although AOT forms a thicker, more hydrated layer. The NaDEHP shows rather little variation with added salt, but a small thickening of the layer on increasing the pH, in contrast to the behavior of AOT.",

author = "Welbourn, {Rebecca J.L.} and Lee, {Seung Yeon} and Philipp Gutfreund and Arwel Hughes and Ali Zarbakhsh and Clarke, {Stuart M.}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

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doi = "10.1021/la504837s",

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T1 - Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water

AU - Welbourn, Rebecca J.L.

AU - Lee, Seung Yeon

AU - Gutfreund, Philipp

AU - Hughes, Arwel

AU - Zarbakhsh, Ali

AU - Clarke, Stuart M.

PY - 2015/3/24

Y1 - 2015/3/24

N2 - The adsorption of a phosphorus analogue of the surfactant AOT, sodium bis(2-ethylhexyl) phosphate (NaDEHP), at the water/alumina interface is described. The material is found to adsorb as an essentially water-free bilayer from neutron reflection measurements. This is similar to the behavior of AOT under comparable conditions, although AOT forms a thicker, more hydrated layer. The NaDEHP shows rather little variation with added salt, but a small thickening of the layer on increasing the pH, in contrast to the behavior of AOT.

AB - The adsorption of a phosphorus analogue of the surfactant AOT, sodium bis(2-ethylhexyl) phosphate (NaDEHP), at the water/alumina interface is described. The material is found to adsorb as an essentially water-free bilayer from neutron reflection measurements. This is similar to the behavior of AOT under comparable conditions, although AOT forms a thicker, more hydrated layer. The NaDEHP shows rather little variation with added salt, but a small thickening of the layer on increasing the pH, in contrast to the behavior of AOT.

UR - http://www.scopus.com/inward/record.url?scp=84925435108&partnerID=8YFLogxK

U2 - 10.1021/la504837s

DO - 10.1021/la504837s

M3 - Article

AN - SCOPUS:84925435108

SN - 0743-7463

VL - 31

SP - 3377

EP - 3384

JO - Langmuir

JF - Langmuir

IS - 11

ER -

Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water

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