uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Continuous Surface Functionalization of Flame-Mlade TiO2 Nanoparticles
ETH, Dept Mech & Proc Engn, Particle Technol Lab, CH-8092 Zurich, Switzerland..
ETH, Dept Mech & Proc Engn, Particle Technol Lab, CH-8092 Zurich, Switzerland..
ETH, Dept Mech & Proc Engn, Particle Technol Lab, CH-8092 Zurich, Switzerland..
2010 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 26, no 8, 5815-5822 p.Article in journal (Refereed) Published
Abstract [en]

Hydrophilic TiO2 particles made in a name aerosol reactor were converted in situ to hydrophobic ones by silylation of their surface hydroxyl groups. So the freshly formed titania aerosol was mixed with a line spray of octyltriethoxysilane (OTES) in water/ethanol solution and functionalized continuously at high temperature. The extent of functionalization and structure of that surface layer were assessed by thermogravimetric analysis (TGA) coupled to mass spectroscopy (MS), differential scanning calorimetry (DSC). Fourier transform infrared (FTIR). and Raman spectroscopy. Product particles were characterized also by transmission electron microscopy (TEM), X-ray diffraction, and nitrogen adsorption. The influence of Mania specific surface area (SSA) and OTES solution concentration on the functional group surface density was investigated. The titanium dioxide surface was covered with functional groups (up to 2.9 wt %) that were thermally stable up to 300 degrees C in air at an average density of 2 OTES/nm(2). Such surface-functionalized particle suspensions in 2-ethylhexanoic acid and xylene were stable over several weeks. In contrast, as-prepared hydrophilic TiO2 precipitated within days in these solvents.

Place, publisher, year, edition, pages
2010. Vol. 26, no 8, 5815-5822 p.
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:uu:diva-317827DOI: 10.1021/la9037149ISI: 000276562300068PubMedID: 20192157OAI: oai:DiVA.org:uu-317827DiVA: diva2:1083106
Available from: 2017-03-20 Created: 2017-03-20 Last updated: 2017-03-20

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Teleki, Alexandra
In the same journal
Langmuir
Nano Technology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf