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Nebulization of Nanocolloidal Suspensions for the Growth of Nanocomposite Coatings in Dielectric Barrier Discharges
Author(s) -
Profili Jacopo,
Levasseur Olivier,
Blaisot JeanBernard,
Koronai Anja,
Stafford Luc,
Gherardi Nicolas
Publication year - 2016
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201500223
Subject(s) - materials science , nanocomposite , suspension (topology) , nanoparticle , dielectric , economies of agglomeration , dielectric barrier discharge , chemical engineering , electrode , transmission electron microscopy , colloid , nanotechnology , scanning electron microscope , electric field , composite material , optoelectronics , chemistry , homotopy , pure mathematics , physics , quantum mechanics , engineering , mathematics
The nebulization of colloidal suspensions is analyzed by dynamic light scattering, scanning, and transmission electron microscopies. While primary agglomeration can be important for many nanoparticle‐solvent couples, our results indicate that for TiO 2 nanoparticles dispersed in water, secondary agglomeration also occurs during nebulization. When nebulization is realized immediately after sustaining a plane‐to‐plane dielectric barrier discharge at atmospheric pressure, the collection efficiency of TiO 2 nanoparticles increases due to the presence of a remanent electric field between the two electrodes. Finally, these findings are used to deposit SiO 2 –TiO 2 nanocomposite thin films by alternating the deposition of dense silica‐like layers in a Townsend discharge and the collection of TiO 2 nanoparticles through nebulization of the nanocolloidal suspension.