Advanced

Effect of hydration and dehydration on the properties of SBA-15 layer studied by humidity scanning QCM-D

Znamenskaya, Yana LU ; Björklund, Sebastian LU ; Kocherbitov, Vitaly LU and Alfredsson, Viveka LU (2016) In Microporous and Mesoporous Materials 230. p.58-65
Abstract

Surface deposited layers of mesoporous silica particles could function as support for bio-sensing or drug release applications. It is crucial to control the surface deposition process and employ relevant techniques to characterize the properties of the particles on the surface. Here, we deposit SBA-15 particles on native silica or cationic surfaces and characterize the hydration and dehydration by employing a novel method based on humidity scanning quartz crystal microbalance with dissipation (HS QCM-D). SBA-15 platelets are deposited with mesopores oriented parallel to the surface normal using drop deposition. SEM shows a monolayer on the surface, which is established as stable. Water sorption-desorption isotherms of the SBA-15 layer... (More)

Surface deposited layers of mesoporous silica particles could function as support for bio-sensing or drug release applications. It is crucial to control the surface deposition process and employ relevant techniques to characterize the properties of the particles on the surface. Here, we deposit SBA-15 particles on native silica or cationic surfaces and characterize the hydration and dehydration by employing a novel method based on humidity scanning quartz crystal microbalance with dissipation (HS QCM-D). SBA-15 platelets are deposited with mesopores oriented parallel to the surface normal using drop deposition. SEM shows a monolayer on the surface, which is established as stable. Water sorption-desorption isotherms of the SBA-15 layer from HS QCM-D are compared with isotherms from water sorption calorimetry and nitrogen sorption on bulk material. We demonstrate that HS QCM-D provides results in good agreement with results obtained with the reference methods. The properties of SBA-15 particles are retained during the deposition process and unaffected by the presence of the surface. In addition, HS QCM-D is a fast technique that requires significantly lower amount of material (∼5000 times) compared to experiments on bulk material. HS QCM-D provides complete characterization of the pore size distribution of SBA-15.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Pore orientation, SBA-15 platelets, Sorption-desorption hysteresis, Surface deposited particles, Water sorption isotherm
in
Microporous and Mesoporous Materials
volume
230
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:84965129116
  • wos:000378661100008
ISSN
1387-1811
DOI
10.1016/j.micromeso.2016.04.034
language
English
LU publication?
yes
id
084b9acc-55b8-46ea-bf01-6fc9515e1f22
date added to LUP
2016-06-30 08:39:03
date last changed
2017-01-01 08:29:34
@article{084b9acc-55b8-46ea-bf01-6fc9515e1f22,
  abstract     = {<p>Surface deposited layers of mesoporous silica particles could function as support for bio-sensing or drug release applications. It is crucial to control the surface deposition process and employ relevant techniques to characterize the properties of the particles on the surface. Here, we deposit SBA-15 particles on native silica or cationic surfaces and characterize the hydration and dehydration by employing a novel method based on humidity scanning quartz crystal microbalance with dissipation (HS QCM-D). SBA-15 platelets are deposited with mesopores oriented parallel to the surface normal using drop deposition. SEM shows a monolayer on the surface, which is established as stable. Water sorption-desorption isotherms of the SBA-15 layer from HS QCM-D are compared with isotherms from water sorption calorimetry and nitrogen sorption on bulk material. We demonstrate that HS QCM-D provides results in good agreement with results obtained with the reference methods. The properties of SBA-15 particles are retained during the deposition process and unaffected by the presence of the surface. In addition, HS QCM-D is a fast technique that requires significantly lower amount of material (∼5000 times) compared to experiments on bulk material. HS QCM-D provides complete characterization of the pore size distribution of SBA-15.</p>},
  author       = {Znamenskaya, Yana and Björklund, Sebastian and Kocherbitov, Vitaly and Alfredsson, Viveka},
  issn         = {1387-1811},
  keyword      = {Pore orientation,SBA-15 platelets,Sorption-desorption hysteresis,Surface deposited particles,Water sorption isotherm},
  language     = {eng},
  month        = {08},
  pages        = {58--65},
  publisher    = {Elsevier},
  series       = {Microporous and Mesoporous Materials},
  title        = {Effect of hydration and dehydration on the properties of SBA-15 layer studied by humidity scanning QCM-D},
  url          = {http://dx.doi.org/10.1016/j.micromeso.2016.04.034},
  volume       = {230},
  year         = {2016},
}