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article

Herstellung von metallischen Nanopartikeln in einem asymmetrischen Dielectric Barrier Discharge‐Plasma bei Atmosphärendruck

Jun Hou, Nicolas Jidenko, Jean‐Pascal Borra, Alfred P. Weber

Chemie Ingenieur Technik > 83 > 12 > 2161 - 2169

Diese Arbeit befasst sich mit der Herstellung metallischer Nanopartikel in einem Dielectric Barrier Discharge (DBD)‐Plasma bei Atmosphärendruck. Im entwickelten Reaktor ist nur eine Elektrode mit einem Dielektrikum (Aluminiumoxid) versehen, während die punktförmige Gegenelektrode für die filamentären Entladungen frei zugänglich ist (asymmetrische DBD). Die metallischen Partikeln werden aus dem Material...

article

Selective productions of reactive species in dielectric barrier discharge by controlling dual duty cycle

Jun S. Lim, Kirubel A. Admasu, Eun H. Choi

Plasma Processes and Polymers > 21 > 10 > n/a - n/a

This study analyzes the selective productions of nitrogen oxides and ozone in dielectric barrier discharge due to temperature controlled by the dual duty cycle. In this work, we varied the dual duty cycle of the output voltage in the power supply, which alternatively generates distinguished high and low‐temperature modes for selective productions of nitrogen oxides and ozone. The alternating nitric...

article

Plasma nitrogen fixation for plant cultivation with air‐derived dinitrogen pentoxide

Shouki Takeshi, Keisuke Takashima, Shota Sasaki, Atsushi Higashitani, more

Plasma Processes and Polymers > 21 > 10 > n/a - n/a

The development of a nonconventional nitrogen fertilizer, which can be fixed in agricultural fields using decentralized renewable energy sources, presents a feasible solution for sustainable on‐site nitrogen fixation and fertilization. This study focuses on plasma‐generated dinitrogen pentoxide (N₂O₅) as a prospective mediator for the on‐site nitrogen fertilization, allowing nitrogen fertilization...

article

Optical emission characterization of an atmospheric pressure dielectric barrier discharge in nitrogen: Evolution of CN emissions during PTFE etching

Alex Destrieux, Williams M. Caceres Ferreira, Zachary Costantino, Jacopo Profili, more

Plasma Processes and Polymers > 21 > 10 > n/a - n/a

The present work investigates the etching of coated polytetrafluoroethylene (PTFE) films using an atmospheric pressure dielectric barrier discharge operating in nitrogen in a filamentary regime. For different treatment durations, the optical emission spectra were recorded over time. Most of the emissions are attributed to the N₂ second positive system. The presence of CN is also observed, and its...

article

Fiber laser tuning by means of nonthermal plasma as a temperature regulator

Hao Jiun Tung, Raja Kamarulzaman Raja Ibrahim, Asrul Izam Azmi, Nor Ain Husein, more

Microwave and Optical Technology Letters > 66 > 8 > n/a - n/a

This work presents a technique to obtain wavelength tuning for a fiber laser with a nonthermal plasma‐based temperature regulator system and a fiber Bragg grating (FBG). The plasma effect was generated in a dielectric barrier discharge (DBD) reactor filled with helium as the carrier gas for plasma generation. The temperature characterization of the DBD reactor had shown that the nonthermal heating...

article

Mechanism of plasma chemistry in CO₂ hydrogenation using a dielectric barrier discharge reactor

Xuming Zhang, Yun Shan, Zhi Sun, Hua Pan, more

Plasma Processes and Polymers > 21 > 7 > n/a - n/a

Plasma‐induced CO₂ hydrogenation process has received much attention, while the related plasma chemistry has not been profoundly explored. Herein, electron‐induced and thermochemical effects on CO₂ hydrogenation in a dielectric barrier discharge reactor were investigated. The temperatures for the discharge pattern transition for CO₂/H₂, CO₂/H₂/N₂, CO₂/H₂/Ar, and CO₂/H₂/He mixtures were 623, 623, 600,...

article

Conversions and selectivities in cold plasma partial oxidation of methane

Silvie Müller, Eckhard Ströfer, Maximilian Kohns, Kerstin Münnemann, more

Plasma Processes and Polymers > 21 > 7 > n/a - n/a

In the present work, the application of dielectric barrier discharge (DBD) cold plasma technology for the partial oxidation of methane was systematically studied. Conversion of the reactants and selectivities were measured using an elaborate product analysis from a recent work by Müller et al. varying the reactant ratio in the feed, the mole fraction of the inert carrier gas argon in the feed, and...

article

Characteristics and performance of an integrated coplanar dielectric barrier discharge device for hand hygiene

Shiyun Liu, Haosheng Jin, Yunyang Lu, Li Wan, more

Plasma Processes and Polymers > 21 > 6 > n/a - n/a

A touchable plasma device based on coplanar dielectric barrier discharge (CDBD) is designed for hand hygiene. The biological safety is evaluated from the aspects of electrical and thermal properties. The peak value of current through the human body (~3.5 mA) and the highest device surface temperature (~40°C) are lower than the threshold of perception current and thermal damage temperature, respectively...

article

Influence of rotating dielectric barrier on discharge characteristics in multi‐needle‐plate DBD

Guanglin Yu, Bangfa Peng, Nan Jiang, Ronggang Wang, more

Plasma Processes and Polymers > 21 > 4 > n/a - n/a

Enhancing discharge energy in dielectric barrier discharge (DBD) is vital for various applications. This study establishes a theoretical formula for predicting enhanced discharge in multi‐needle‐plate (MP) DBD, accounting for factors like needle count, rotation speed, and voltage frequency. Experiments validate the formula's accuracy, showing that precisely matched parameters result in enhanced discharge...

article

Effect of different voltages of dielectric barrier discharge cold plasma sterilization on the quality of rainbow trout (Oncorhynchus mykiss) during cryopreservation

Xiaoqiao Chen, Kailong Zheng, Yang Qu, Junhao Cao, more

Journal of Food Safety > 44 > 2 > n/a - n/a

In this study, the effect of dielectric barrier discharge (DBD) cold plasma at different voltages (60, 70, and 80 kV) on the freshness and quality changes of rainbow trout was investigated. The results showed that the voltage of DBD was negatively and positively correlated with the total viable counts and degree of lipid oxidation, respectively. Based on the magnitudes of TVC and TVB‐N, it was observed...

article

Transformer‐less drive and operation stability analysis of dielectric barrier discharge using a double resonance circuit

Taichiro Tamida, Ryota Nagata, Taiga Itani

Electrical Engineering in Japan > 217 > 1 > n/a - n/a

A dielectric barrier discharge load (DBD) with a maintenance voltage of 1.5 kV has been successfully driven stably from a 48 V inverter only by resonance voltage boost and no transformer. The proposed circuit consists of a two‐stage resonant circuit. The circuit operation is investigated using both prototyping measurement and circuit simulation, which shows that despite the high Q value, the design...

article

Co‐Ni/MOF‐74 catalyst packed‐bed DBD plasma for ammonia synthesis

Yang Liu, Xiaofang Xu, Qinlong Song, Zihan Guo, more

Plasma Processes and Polymers > 21 > 2 > n/a - n/a

Nonthermal plasma (NTP) provides a potential and sustainable route for the synthesis of ammonia. In this work, a Co–Ni/MOF‐74 catalyst was developed to synthesize ammonia from N₂ and H₂ in a dielectric barrier discharge (DBD) plasma at low temperature and atmospheric pressure. Co–Ni/MOF‐74 showed the highest ammonia synthesis rate up to 2608.70 μmol g⁻¹ h⁻¹ at 200°C, with V(N₂):V(H₂) ratio of 1:1...

article

Toward a better interpretation of the partial least squares regression models for fluoropolymers treated by dielectric barrier discharges at atmospheric pressure

Alex Gélinas, Jacopo Profili, Faegheh Fotouhiardakani, Williams Marcel Caceres Ferreira, more

Plasma Processes and Polymers > 21 > 2 > n/a - n/a

In this article, partial least squares regression was applied to a continuous dielectric discharge process aiming to modify the surface of a fluoropolymer. Cross‐validation was used to find the optimal number of latent variables that minimize the error from the model. Then, the key parameters affecting the process were highlighted with the variable importance on the projection (VIP) and the biplot...

article

Evaluating the carbon footprint of the integrated DBD‐plasma bi‐reforming unit via laboratory scale experiments and scaled‐up process modeling

Guoqiang Cao, Diego Alexander Gonzalez‐Casamachin, Yue Xiao, Chien‐Hua Chen, more

Plasma Processes and Polymers > 21 > 1 > n/a - n/a

Catalytic dielectric barrier discharge (DBD) plasma reactor experiments were performed in a tubular glass reactor with a 2 mm gap at 550°C to facilitate the reaction kinetics of steam added dry reforming or bireforming. The best specific energy input obtained was 11.2 eV/molecule feed at CO₂:CH₄:H₂O of 4.5:1:4.5 ratio and gas hour space velocity (GHSV) = 432 h⁻¹. This value was used to design a conceptual...

article

Plasma catalytic technology for CH₄ and CO₂ conversion: A review highlighting fluidized‐bed plasma reactor

Xiaozhong Chen, Hyun‐Ha Kim, Tomohiro Nozaki

Plasma Processes and Polymers > 21 > 1 > n/a - n/a

The plasma catalytic valorization of gases, particularly CH₄ and CO₂, has gained increasing attention. Value‐added chemicals, such as syngas and ethene, can be formed under mild conditions when temperature‐decoupled plasma activation and multistep feasible catalytic conversion are combined. In this sense, efficient plasma–catalyst interaction is of key importance, for which, however, plasma catalysis,...

article

Effect of airflow on the discharge uniformity at different cycles in the repetitive unipolar nanosecond‐pulsed dielectric barrier discharge

Yu‐Ying Wang, Hui‐Jie Yan, Xiao‐Dong Bai, Ting Li, more

Plasma Processes and Polymers > 20 > 11 > n/a - n/a

This study explores the discharge uniformity at different cycles under different airflow velocities in nanosecond‐pulsed dielectric barrier discharge. Based on a proper choice of the airflow velocity and discharge parameters, diffuse discharges can be maintained at an air gap of 5–7 mm. At higher airflow velocities, the discharge may transition to a complex mode, in which the diffuse and filamentary...

article

Nonlinear plasma surface modification of polylactide to promote interaction with fibroblasts

Almaz Kamalov, Aleksey Ivanov, Natalia Smirnova, Maria Sokolova, more

Polymer Engineering & Science > 63 > 11 > 3565 - 3576

Surface modification of polylactide films was performed using a dielectric barrier discharge (DBD) with the aim of increasing proliferative activity of human fibroblasts on these films. It has been shown that during the plasma treatment of the polylactide film, nonlinear processes occur depending on the processing time. The effect of the dielectric barrier discharge on the modification of polylactide...

article

Direct Amination of Benzene with Ammonia by Flow Plasma Chemistry

Victor Dupont, Stéphanie Ognier, Gabriel Morand, Cyril Ollivier, more

Chemistry – A European Journal > 29 > 56 > n/a - n/a

Amine derivatives, including aniline and allylic amines, can be formed in a single‐step process from benzene and an ammonia plasma in a microreactor. Different process parameters such as temperature, residence time, and plasma power were evaluated to improve the reaction yield and its selectivity toward aminated products and avoid hydrogenated or oligomerized products. In parallel, simulation studies...

article

Removal of a mixture of antibiotics in water using nonthermal plasma

Florin Bilea, Tian Tian, Monica Magureanu, Hervé Rabat, more

Plasma Processes and Polymers > 20 > 8 > n/a - n/a

A dielectric barrier discharge with falling liquid film was used to degrade the antibiotics amoxicillin and sulfamethoxazole in water. The antibiotic concentrations decrease exponentially during plasma treatment and have similar half‐life time, in the range 4–9 min. By increasing the discharge power (9.1–20.2 W), faster removal of the contaminants is obtained, but the energy efficiency remains almost...

article

Stainless steel membrane distributor‐type dielectric barrier discharge plasma reactor for co‐conversion of CH₄/CO₂

Xinrui Wang, Wei Guo, Shanshan Xu, Huanhao Chen, more

AIChE Journal > 69 > 7 > n/a - n/a

Flow arrangement in a dielectric barrier discharge (DBD) plasma reactor is key to affecting multi‐component gas reactions. Herein, a stainless‐steel membrane distributor‐type DBD reactor was developed to allow the change of gas flow arrangements freely to understand their effect on plasma‐assisted CH₄/CO₂ co‐conversion to syngas. Variation of gas flow arrangements in the DBD reactor could regulate...

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Herstellung von metallischen Nanopartikeln in einem asymmetrischen Dielectric Barrier Discharge‐Plasma bei Atmosphärendruck

Selective productions of reactive species in dielectric barrier discharge by controlling dual duty cycle

Plasma nitrogen fixation for plant cultivation with air‐derived dinitrogen pentoxide

Optical emission characterization of an atmospheric pressure dielectric barrier discharge in nitrogen: Evolution of CN emissions during PTFE etching

Fiber laser tuning by means of nonthermal plasma as a temperature regulator

Mechanism of plasma chemistry in CO₂ hydrogenation using a dielectric barrier discharge reactor

Conversions and selectivities in cold plasma partial oxidation of methane

Characteristics and performance of an integrated coplanar dielectric barrier discharge device for hand hygiene

Influence of rotating dielectric barrier on discharge characteristics in multi‐needle‐plate DBD

Effect of different voltages of dielectric barrier discharge cold plasma sterilization on the quality of rainbow trout (Oncorhynchus mykiss) during cryopreservation

Transformer‐less drive and operation stability analysis of dielectric barrier discharge using a double resonance circuit

Co‐Ni/MOF‐74 catalyst packed‐bed DBD plasma for ammonia synthesis

Toward a better interpretation of the partial least squares regression models for fluoropolymers treated by dielectric barrier discharges at atmospheric pressure

Evaluating the carbon footprint of the integrated DBD‐plasma bi‐reforming unit via laboratory scale experiments and scaled‐up process modeling

Plasma catalytic technology for CH₄ and CO₂ conversion: A review highlighting fluidized‐bed plasma reactor

Effect of airflow on the discharge uniformity at different cycles in the repetitive unipolar nanosecond‐pulsed dielectric barrier discharge

Nonlinear plasma surface modification of polylactide to promote interaction with fibroblasts

Direct Amination of Benzene with Ammonia by Flow Plasma Chemistry

Removal of a mixture of antibiotics in water using nonthermal plasma

Stainless steel membrane distributor‐type dielectric barrier discharge plasma reactor for co‐conversion of CH₄/CO₂

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