Characterization of a novel volume-surface DBD reactor: discharge characteristics, ozone production and benzene degradation

Shang, Kefeng; Wang, Meiwei; Peng, Bangfa; Li, Jie; Lü, Na; Jiang, Nan; Wu, Yan

doi:10.1088/1361-6463/ab538d

Cited by 51 publications

(22 citation statements)

References 31 publications

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“…This indicates that an unable plasma is of crucial importance on enhanced performances between plasma and catalyst. [9,10,[28][29][30] Furthermore, a dual-phase S-DBD has been numerically investigated with a particle-in-cell/Monte Carlo collision (PIC/MCC) method under different voltage sources for improving the gas treatment volume. [31] An S-DBD plasma is an ionized gas, occurring and propagating on a dielectric surface, forming surface streamers.…”

Section: Introductionmentioning

confidence: 99%

Two‐dimensional particle‐in‐cell/Monte Carlo simulations of streamer formation and propagation in catalyst pores in a surface dielectric barrier discharge

Zuo

Zhou

Zhang

et al. 2022

Plasma Processes & Polymers

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Plasma catalysis is attracting great interest due to its synergistic combination of catalytic and plasma reactor processes. To provide possible controlling methods to this tunability, two‐dimensional particle‐in‐cell/Monte Carlo simulations are applied to investigate the propagation mechanisms of plasma streamers in the porous catalyst in a surface dielectric barrier discharge. Dry air at atmospheric pressure is investigated under a subnanosecond voltage pulse. The results show that the presence of the catalyst pores could enhance the steamer intensity and control the direction of the streamers, yielding highly concentrated reactive species inside catalyst pores. The streamer propagation speed is enhanced by increasing the strength of cathode voltage. These high‐density plasma streamers with controllable direction could benefit many applications in plasma‐enhanced catalysis.

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Section: Introductionmentioning

confidence: 99%

Two‐dimensional particle‐in‐cell/Monte Carlo simulations of streamer formation and propagation in catalyst pores in a surface dielectric barrier discharge

Zuo

Zhou

Zhang

et al. 2022

Plasma Processes & Polymers

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“…Comparing Figure 2b and Figure 2c, we see that the amount and the int current pulses increased significantly with increase in the applied voltage, while rent peak decreased from about 0.3 A to 0.15 A. This may be because the electri the gas gap and on the catalyst's surface increased with the voltage applied in th tion [26]. Electrons gain more energy from the high electric field, causing more co dissociations and ionizations, and thus more micro-discharges [27].…”

Section: Visualization and Electrical Characteristics Of Dbdmentioning

confidence: 80%

Degradation of Benzene Using Dielectric Barrier Discharge Plasma Combined with Transition Metal Oxide Catalyst in Air

Yuan

Zhou

et al. 2022

Catalysts

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In this paper, a uniform and stable dielectric barrier discharge plasma is presented for degradation of benzene combined with a transition metal oxide catalyst. The discharge images, waveforms of discharge current, and the optical emission spectra are measured to investigate the plasma characteristics. The effects of catalyst types, applied voltage, driving frequency, and initial VOCs concentration on the degradation efficiency of benzene are studied. It is found that the addition of the packed dielectric materials can effectively improve the uniformity of discharge and enhance the intensity of discharge, thus promoting the benzene degradation efficiency. At 22 kV, the degradation efficiencies of dielectric barrier discharge plasma packed with CuO, ZnO and Fe3O4 are 93.6%, 93.2% and 76.2%, respectively. When packing with ZnO, the degradation efficiency of the dielectric barrier discharge plasma is improved from 86.8% to 94.9%, as the applied voltage increases from 16 kV to 24 kV. The catalysts were characterized by XPS, XRD and SEM. The synergistic mechanism and the property of the catalyst are responsible for benzene degradation in the plasma–catalysis system. In addition, the main physiochemical processes and possible degradation mechanism of benzene are discussed.

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“…Moreover, other important reactive species, such as O 3 , do not have emissions in the spectral range investigated. Nevertheless, these kinds of plasma sources generate a large amount of ozone and N 2 O that is important for treatments of alginate surfaces of synseeds [ 13 , 14 , 63 , 64 ].…”

Section: Discussionmentioning

confidence: 99%

Treatment of Chrysanthemum Synthetic Seeds by Air SDBD Plasma

Škoro

Živković

Jevremović

et al. 2022

Plants

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Herein, we present the effect of surface dielectric barrier discharge (SDBD) air cold plasma on regrowth of chrysanthemum synthetic seeds (synseeds) and subsequent plantlet development. The plasma system used in this study operates in air at the frequency of 50 Hz. The detailed electrical characterization of SDBD was shown, as well as air plasma emission spectra obtained by optical emission spectroscopy. The chrysanthemum synseeds (encapsulated shoot tips) were treated in air plasma for different treatment times (0, 5 or 10 min). Plasma treatment significantly improved the regrowth and whole plantlet development of chrysanthemum synseeds under aseptic (in vitro) and non-aseptic (ex vitro) conditions. We evaluated the effect of SDBD plasma on synseed germination of four chrysanthemum cultivars after direct sowing in soil. Germination of synseeds directly sowed in soil was cultivar-dependent and 1.6−3.7 fold higher after plasma treatment in comparison with untreated synseeds. The study showed a highly effective novel strategy for direct conversion of simple monolayer alginate chrysanthemum synseeds into entire plantlets by plasma pre-conversion treatment. This treatment reduced contamination and displayed a considerable ex vitro ability to convert clonally identical chrysanthemum plants.

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Characterization of a novel volume-surface DBD reactor: discharge characteristics, ozone production and benzene degradation

Cited by 51 publications

References 31 publications

Two‐dimensional particle‐in‐cell/Monte Carlo simulations of streamer formation and propagation in catalyst pores in a surface dielectric barrier discharge

Two‐dimensional particle‐in‐cell/Monte Carlo simulations of streamer formation and propagation in catalyst pores in a surface dielectric barrier discharge

Degradation of Benzene Using Dielectric Barrier Discharge Plasma Combined with Transition Metal Oxide Catalyst in Air

Treatment of Chrysanthemum Synthetic Seeds by Air SDBD Plasma

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