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Atmospheric synthesis of superhydrophobic TiO2 nanoparticle deposits in a single step using Liquid Flame Spray

Aromaa, Mikko; Arffman, Anssi; Suhonen, Heikki; Haapanen, Janne; Keskinen, Jorma; Honkanen, Mari; Nikkanen, Juha-Pekka; Levanen, Erkki; Messing, Maria LU and Deppert, Knut LU , et al. (2012) In Journal of Aerosol Science 52. p.57-68
Abstract
Titanium dioxide nanoparticles are synthesised in aerosol phase using the Liquid Flame Spray method. The particles are deposited in-situ on paperboard, glass and metal surfaces. According to literature, titanium dioxide is supposed to be hydrophilic. However, hydrophobic behaviour is observed on paperboard substrates but not on metal or glass substrates. Here, the water contact angle behaviour of the deposits is studied along with XRD, XPS, BET and HR-TEM. The deposits are compared with silicon dioxide deposits having, as expected, hydrophilic properties synthesised with the same method. It seems probable that the deposition process combusts some substrate material from the paperboard substrate, which later on condenses on top of the... (More)
Titanium dioxide nanoparticles are synthesised in aerosol phase using the Liquid Flame Spray method. The particles are deposited in-situ on paperboard, glass and metal surfaces. According to literature, titanium dioxide is supposed to be hydrophilic. However, hydrophobic behaviour is observed on paperboard substrates but not on metal or glass substrates. Here, the water contact angle behaviour of the deposits is studied along with XRD, XPS, BET and HR-TEM. The deposits are compared with silicon dioxide deposits having, as expected, hydrophilic properties synthesised with the same method. It seems probable that the deposition process combusts some substrate material from the paperboard substrate, which later on condenses on top of the deposit to form a carbonaceous layer causing the hydrophobic behaviour of the TiO2 deposit. The similar layer does not form when depositing the nanoparticles on a metal or glass surfaces. The observations are more than purely aerosol phenomena. However, they are quite essential in nanoparticle deposition from the aerosol phase onto a substrate which is commonly utilised. (C) 2012 Elsevier Ltd. All rights reserved. (Less)
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publication status
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keywords
Liquid Flame Spray, Titanium dioxide, Nanoparticle deposition, Functional coating
in
Journal of Aerosol Science
volume
52
pages
57 - 68
publisher
Elsevier
external identifiers
  • wos:000307796800005
  • scopus:84862224268
ISSN
0021-8502
DOI
10.1016/j.jaerosci.2012.04.009
language
English
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yes
id
a4a1ec30-721c-4ab5-9f16-9624e06bc413 (old id 3147554)
date added to LUP
2012-10-30 14:48:38
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2017-06-18 04:19:39
@article{a4a1ec30-721c-4ab5-9f16-9624e06bc413,
  abstract     = {Titanium dioxide nanoparticles are synthesised in aerosol phase using the Liquid Flame Spray method. The particles are deposited in-situ on paperboard, glass and metal surfaces. According to literature, titanium dioxide is supposed to be hydrophilic. However, hydrophobic behaviour is observed on paperboard substrates but not on metal or glass substrates. Here, the water contact angle behaviour of the deposits is studied along with XRD, XPS, BET and HR-TEM. The deposits are compared with silicon dioxide deposits having, as expected, hydrophilic properties synthesised with the same method. It seems probable that the deposition process combusts some substrate material from the paperboard substrate, which later on condenses on top of the deposit to form a carbonaceous layer causing the hydrophobic behaviour of the TiO2 deposit. The similar layer does not form when depositing the nanoparticles on a metal or glass surfaces. The observations are more than purely aerosol phenomena. However, they are quite essential in nanoparticle deposition from the aerosol phase onto a substrate which is commonly utilised. (C) 2012 Elsevier Ltd. All rights reserved.},
  author       = {Aromaa, Mikko and Arffman, Anssi and Suhonen, Heikki and Haapanen, Janne and Keskinen, Jorma and Honkanen, Mari and Nikkanen, Juha-Pekka and Levanen, Erkki and Messing, Maria and Deppert, Knut and Teisala, Hannu and Tuominen, Mikko and Kuusipalo, Jurkka and Stepien, Milena and Saarinen, Jarkko J. and Toivakka, Martti and Makela, Jyrki M.},
  issn         = {0021-8502},
  keyword      = {Liquid Flame Spray,Titanium dioxide,Nanoparticle deposition,Functional coating},
  language     = {eng},
  pages        = {57--68},
  publisher    = {Elsevier},
  series       = {Journal of Aerosol Science},
  title        = {Atmospheric synthesis of superhydrophobic TiO2 nanoparticle deposits in a single step using Liquid Flame Spray},
  url          = {http://dx.doi.org/10.1016/j.jaerosci.2012.04.009},
  volume       = {52},
  year         = {2012},
}