Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

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

In English

Författare

  • Mikko Aromaa
  • Anssi Arffman
  • Heikki Suhonen
  • Janne Haapanen
  • Jorma Keskinen
  • Mari Honkanen
  • Juha-Pekka Nikkanen
  • Erkki Levanen
  • Maria Messing
  • Knut Deppert
  • Hannu Teisala
  • Mikko Tuominen
  • Jurkka Kuusipalo
  • Milena Stepien
  • Jarkko J. Saarinen
  • Martti Toivakka
  • Jyrki M. Makela
Visa allt

Summary, in English

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.

Publiceringsår

2012

Språk

Engelska

Sidor

57-68

Publikation/Tidskrift/Serie

Journal of Aerosol Science

Volym

52

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Condensed Matter Physics

Nyckelord

  • Liquid Flame Spray
  • Titanium dioxide
  • Nanoparticle deposition
  • Functional coating

Status

Published

Forskningsgrupp

  • Nanometer structure consortium (nmC)

ISBN/ISSN/Övrigt

  • ISSN: 0021-8502