Ozone synthesis from oxygen in dielectric barrier discharges

Eliasson, Baldur; Hirth, Michael; Kogelschatz, U.

doi:10.1088/0022-3727/20/11/010

Cited by 862 publications

(531 citation statements)

References 34 publications

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“…At discharge powers (1.5 and 2 W) valuable concentrations of ozone (2 and 3 g/m 3 respectively) have been measured. The oxidation potential of ozone (2.1 V) is comparable to that of atomic oxygen (2.4 V) [32]. These results support our claim about the important role of ozone in the oxidation process of PC surface.…”

Section: Resultssupporting

confidence: 87%

Limiting the Migration of Bisphenol A from Polycarbonate Using Dielectric Barrier Discharge

Soliman¹,

Samir²,

Hassan³

et al. 2014

OJSTA

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Dielectric barrier discharge is used as a cheap technique for surface treatment of polycarbonate. The discharge system is working in open air at atmospheric pressure. The treatments are carried out at low discharge powers (1.5 and 2 W) for treatment time (2.5 -15 min). The treated samples show decrease in the contact angle and increase in the crystallinity, thermal stability and surface roughness. The effect of ozone on the increase in the oxygen containing functional groups is discussed. The treatment process shows effective limitation of the migration of bisphenol A from the surface of polycarbonate due to the cross linking. Zero migration of bisphenole A is recorded as the sample is treated for 7.5 min. The treatment process is found to be very efficient with very low cost.

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Section: Resultssupporting

confidence: 87%

Limiting the Migration of Bisphenol A from Polycarbonate Using Dielectric Barrier Discharge

Soliman¹,

Samir²,

Hassan³

et al. 2014

OJSTA

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“…The gas-phase reaction of ozone with toluene, for example, is slow; however, in the presence of plasma discharge, ozone could be excited, whereby its activity increased [35,36]. The destruction of vibrationally excited ozone, generated by a three-body reaction, was reported to be about 1600 times faster than ground-state ozone due to collisions with oxygen atoms [37,38]. .…”

Section: Dee Decomposition In a One-stage Reactormentioning

confidence: 99%

Non-Thermal Plasma Combined with Cordierite-Supported Mn and Fe Based Catalysts for the Decomposition of Diethylether

Trinh

Mok

2015

Catalysts

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Abstract:The removal of dilute diethylether (DEE, concentration: 150 ppm) from an air stream (flow rate: 1.0 L min −1 ) using non-thermal plasma combined with different cordierite-supported catalysts, including Mn, Fe, and mixed Mn-Fe oxides, was investigated. The experimental results showed that the decomposition of DEE occurred in a one-stage reactor without the positive synergy of plasma and supported catalysts, by which ca. 96% of DEE was removed at a specific input energy (SIE) of ca. 600 J L −1 , except when the mixed Mn-Fe/cordierite was used. Among the catalysts that were examined, Mn-Fe/cordierite, the catalyst that was the most efficient at decomposing ozone was found to negatively affect the decomposition of DEE in the one-stage reactor. However, when it was utilized as a catalyst in the post-plasma stage of a two-part hybrid reactor, in which Mn/cordierite was directly exposed to the plasma, the reactor performance in terms of DEE decomposition efficiency was improved by more than 10% at low values of SIE compared to the efficiency that was achieved without Mn-Fe/cordierite. The ozone that was formed during the plasma stage and its subsequent catalytic dissociation during the post-plasma stage to produce atomic oxygen therefore played important roles in the removal of DEE.

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“…With gradual increase of power input the DCSBD gets visually more and more diffuse and homogeneous, though it is still composed of a high number of individual microdischarges. The microdischarges with their properties and interactions influence in general the plasma parameters of DBD [22][23][24][25], and the DCSBD as well. It is therefore of great importance to study the parameters of individual microdischarges [26,27] as well as their collective behavior [28][29][30] to improve the understanding of plasma processes in DCSBD, which can be used for material treatment in industrial applications [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Diffuse Coplanar Surface Barrier Discharge in Artificial Air: Statistical Behaviour of Microdischarges

et al. 2014

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Diffuse Coplanar Surface Barrier Discharge (DCSBD) is a novel type of atmospheric-pressure plasma source developed for high-speed large-area surface plasma treatments. The statistical behavior of microdischarges of DCSBD generated in artificial air atmosphere was studied using time-correlated optical and electrical measurements. Changes in behavior of microdischarges are shown for various electrode gap widths and input voltage amplitudes. They are discussed in the light of correlation of the number of microdischarges and the number of unique microdischarges' paths per discharge event.The 'memory effect' was observed in the behavior of microdischarges and it manifests itself in a significant number of microdischarges reusing the path of microdischarges from previous half-period. Surprisingly this phenomenon was observed even for microdischarges of the same half-period of the discharge, where mechanisms other than charge deposition have to be involved. The phenomenon of discharge paths reuse is most pronounced for wide electrode gap width and/or increased input voltage amplitude.

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Ozone synthesis from oxygen in dielectric barrier discharges

Cited by 862 publications

References 34 publications

Limiting the Migration of Bisphenol A from Polycarbonate Using Dielectric Barrier Discharge

Limiting the Migration of Bisphenol A from Polycarbonate Using Dielectric Barrier Discharge

Non-Thermal Plasma Combined with Cordierite-Supported Mn and Fe Based Catalysts for the Decomposition of Diethylether

Diffuse Coplanar Surface Barrier Discharge in Artificial Air: Statistical Behaviour of Microdischarges

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