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Orientation specific deposition of mesoporous particles

Kjellman, Tomas LU ; Bodén, Niklas LU ; Wennerström, Håkan LU ; Edler, Karen LU and Alfredsson, Viveka LU (2014) In APL Materials 2(11).
Abstract
We present a protocol for a facile orientation specific deposition of plate-like mesoporous SBA-15 silica particles onto a surface (mesopores oriented normal to surface). A drop of an aqueous dispersion of particles is placed on the surface and water vaporizes under controlled relative humidity. Three requirements are essential for uniform coverage: particle dispersion should not contain aggregates, a weak attraction between particles and surface is needed, and evaporation rate should be low. Aggregates are removed by stirring/sonication. Weak attraction is realized by introducing cationic groups to the surface. Insight into the mechanisms of the so-called coffee stain effect is also provided. (C) 2014 Author(s). All article content,... (More)
We present a protocol for a facile orientation specific deposition of plate-like mesoporous SBA-15 silica particles onto a surface (mesopores oriented normal to surface). A drop of an aqueous dispersion of particles is placed on the surface and water vaporizes under controlled relative humidity. Three requirements are essential for uniform coverage: particle dispersion should not contain aggregates, a weak attraction between particles and surface is needed, and evaporation rate should be low. Aggregates are removed by stirring/sonication. Weak attraction is realized by introducing cationic groups to the surface. Insight into the mechanisms of the so-called coffee stain effect is also provided. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
APL Materials
volume
2
issue
11
publisher
American Institute of Physics
external identifiers
  • wos:000345638800007
  • scopus:84907991757
ISSN
2166-532X
DOI
10.1063/1.4897282
language
English
LU publication?
yes
id
b37d2d29-5d93-4fb5-9e75-66650f687235 (old id 4965681)
date added to LUP
2015-01-29 13:17:04
date last changed
2017-03-19 03:44:50
@article{b37d2d29-5d93-4fb5-9e75-66650f687235,
  abstract     = {We present a protocol for a facile orientation specific deposition of plate-like mesoporous SBA-15 silica particles onto a surface (mesopores oriented normal to surface). A drop of an aqueous dispersion of particles is placed on the surface and water vaporizes under controlled relative humidity. Three requirements are essential for uniform coverage: particle dispersion should not contain aggregates, a weak attraction between particles and surface is needed, and evaporation rate should be low. Aggregates are removed by stirring/sonication. Weak attraction is realized by introducing cationic groups to the surface. Insight into the mechanisms of the so-called coffee stain effect is also provided. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.},
  articleno    = {113305},
  author       = {Kjellman, Tomas and Bodén, Niklas and Wennerström, Håkan and Edler, Karen and Alfredsson, Viveka},
  issn         = {2166-532X},
  language     = {eng},
  number       = {11},
  publisher    = {American Institute of Physics},
  series       = {APL Materials},
  title        = {Orientation specific deposition of mesoporous particles},
  url          = {http://dx.doi.org/10.1063/1.4897282},
  volume       = {2},
  year         = {2014},
}