Improving the atmospheric plasma deposition of crystalline inorganic coatings

Rémy, Antoine; Fall, Modou; Segato, Tiriana; Godet, Stéphane; Delplancke‐Ogletree, Marie‐Paule; Panini, Piyush; Geerts, Yves; Reniers, François

doi:10.1016/j.tsf.2019.137437

Cited by 4 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An AFS G10S-V AC power supply, operating at 2.7 kHz, is connected to the high-voltage electrode. A homemade induction system, described in detail elsewhere [24], allows the heating of the sample holder. The temperature of the sample holder was calibrated using an infrared camera.…”

Section: Synthesis Of Tio X and Tio X -N Thin Filmmentioning

confidence: 99%

“…Besides a fine control of the morphology, no crystalline TiO 2 structure has been reported after deposition. Recently, the heating of the substrate during the deposition at 673 K has been used to allow a spontaneous crystallization of the TiO x film [24]. However, no insight into the evolution of the composition of the film has been reported.…”

Section: Influence Of the Substrate Temperaturementioning

confidence: 99%

See 1 more Smart Citation

Deposition of TiOx and N-TiOx by dielectric barrier discharge at atmospheric pressure

Chauvin,

Bittencourt,

Galais

et al. 2023

Surface and Coatings Technology

View full text Add to dashboard Cite

Section: Synthesis Of Tio X and Tio X -N Thin Filmmentioning

confidence: 99%

Section: Influence Of the Substrate Temperaturementioning

confidence: 99%

Deposition of TiOx and N-TiOx by dielectric barrier discharge at atmospheric pressure

Chauvin,

Bittencourt,

Galais

et al. 2023

Surface and Coatings Technology

View full text Add to dashboard Cite

“…Because of their relative ease of use and implementation, they have been widely used in research laboratories and industries for gas conversion, [ 1,2 ] activation of surfaces, [ 3,4 ] deposition of polymeric coatings, [ 5 ] and even synthesis of crystalline inorganic coatings. [ 6 ] Indeed, one of the oldest processes for ozone generation, that is, the Siemens process, dating back to 1857, is based on a DBD. [ 7 ] Recently, DBDs for gas conversion have regained interest due to their capacity to create a specific mix of reactive molecules and atoms, without requiring complex heat management and losses associated with a thermalized discharge.…”

Section: Introductionmentioning

confidence: 99%

Interplay between nitrogen oxides and ozone in a filamentary dielectric barrier discharge at various frequencies

Rémy

Reniers

2023

Plasma Processes & Polymers

Self Cite

View full text Add to dashboard Cite

Pursuing more efficient nitrogen fixation in the context of the current climate crisis is of prime importance. The Haber‐Bosch process (NH3 production) accounts for at least 2% of the yearly released greenhouse gases. Alternatively, different atmospheric nonthermal discharges have proven their ability to convert nitrogen and oxygen from the air into nitrogen oxides (NO, NO2, and HNO3 hereafter referred as NOx). Among them, dielectric barrier discharges (DBDs) in N2/O2 are very interesting as they are characterized by microdischarges (MDs) developing into filaments under specific conditions (gap length, voltage, frequency, nature of the dielectrics). In this work, we used a sinusoidal voltage at 4, 12, 17.5, and 30 kHz as a key parameter to manipulate the MDs behaviors in an N2/O2 DBD and tailor the chemistry of the discharge. We characterized the MDs distribution by high‐speed camera imaging. Two different nitrogen emission systems, that is, the second positive system (SPS) and the first negative system (FNS), were used to assess the filament temperature and what we define as the delayed‐glow temperature, respectively. The influence of the filament's distribution on the overall discharge temperature has also been evaluated, by using a novel approach allowing the generation of heat distribution maps directly on a thermosensitive paper exposed to the discharge. Finally, the effect of the filaments on ozone (O3) and NOx production has been monitored by in situ Fourier‐transform infrared (FTIR). The DBD can be tuned between homogenously distributed MDs at 4 and 12 kHz to highly localized filaments at 17.5 and 30 kHz. A high filament temperature combined with a cold delayed‐glow is observed at 17.5 kHz while both the filament and the delayed‐glow temperature are high at 30 kHz. Low frequencies lead to heat spreading into the whole discharge volume, while localization of heat along the filament's paths is observed at high frequencies. High‐temperature filaments in the 30 kHz discharge and in the globally heated discharge at low frequencies quickly remove O3 from the discharge and consequently limit the overall NOx production by removing important oxidation pathways. On the contrary, filaments surrounded by cold gas observed at 17.5 kHz allowed to maintain a high concentration of O3 necessary for a faster oxidation of NO and thus increase the HNO3 production, even after 250 s, by avoiding backward reactions.

show abstract

Immobilized Microdischarges in Pulsed DBD Plasmas for Localized Deposition and Patterning of Polymer-Like Films

Demaude

Petitjean

Brabant

et al. 2023

Plasma Chem Plasma Process

View full text Add to dashboard Cite

Improving the atmospheric plasma deposition of crystalline inorganic coatings

Cited by 4 publications

References 40 publications

Deposition of TiOx and N-TiOx by dielectric barrier discharge at atmospheric pressure

Deposition of TiOx and N-TiOx by dielectric barrier discharge at atmospheric pressure

Interplay between nitrogen oxides and ozone in a filamentary dielectric barrier discharge at various frequencies

Immobilized Microdischarges in Pulsed DBD Plasmas for Localized Deposition and Patterning of Polymer-Like Films

Contact Info

Product

Resources

About