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Deposition of homogeneous carbon-TiO2 composites by atmospheric pressure DBD

Abstract : Atmospheric pressure Dielectric Barrier Discharge (AP-DBD) was used to deposit homogeneous carbon-TiO2 composites. Non-intrusive Laser Light Scattering was employed to study the transport of the nanoparticles across the plasma. The characteristics of the coating were found to depend on the gas flow and on the spray chamber used for introducing the nanoparticles (cyclonic and Scott spray chambers). According to the SEM images, higher gas flows favor the formation of more homogeneous coatings both in terms of thickness and NPs-aggregates distribution regardless of the spray chamber. The Scott spray chamber was shown to be more efficient for the deposition of uniform coatings even at low gas flows. It also yields the highest Ti concentration that reaches up to 18%. Furthermore, the light scattered by the nanoparticles was shown to be directly related to the coating thickness, hence to the density of nanoparticles in the plasma.ppap201600075-gra-0001
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Brunet Paul, Rocío Rincón, Joëlle Margot, Françoise F. Massines, Mohamed Chaker. Deposition of homogeneous carbon-TiO2 composites by atmospheric pressure DBD. Plasma Processes and Polymers, Wiley-VCH Verlag, 2016, ⟨10.1002/ppap.201600075⟩. ⟨hal-01482439⟩



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