Exploitation of inline photon density wave spectroscopy for titania particle syntheses

In this work, inline (or in‐situ) monitoring of titania particle formation with photon density wave spectroscopy is shown to provide helpful information for process optimization for higher particle yields. Titania particles have been synthesized by the controlled hydrolysis of tetraethyl orthotitana...

Full description

Saved in:
Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 106; no. 1; pp. 671 - 680
Main Authors Zimmermann, Sebastian, Reich, Oliver, Bressel, Lena
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.01.2023
Subjects
Dilution
Disintegration
Dispersions
Optimization
particles
Photon density
photon density wave spectroscopy
Photons
Reaction time
scattering
sol‐gel
Spectroscopy
synthesis
titanium dioxide
Online AccessGet full text

Cover

More Information
Summary:In this work, inline (or in‐situ) monitoring of titania particle formation with photon density wave spectroscopy is shown to provide helpful information for process optimization for higher particle yields. Titania particles have been synthesized by the controlled hydrolysis of tetraethyl orthotitanate. Without calibration or dilution, photon density wave spectroscopy provides access to dispersions' reduced scattering coefficient μs'. Hence, information can be obtained inline about processes that are otherwise challenging for established particle characterization methods. Photon density wave spectroscopy results suggest that the titania particles disintegrate over time after their formation. Consistent with that hypothesis, a decreasing particle yield with reaction time has been observed. The disintegration can be hindered by adding a sufficient amount of hexadecylamine, such that the particle yield after 24 h can be increased by 44% for the given syntheses.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.18744