Enhancement of Ozone Synthesis via ZnO Coating for Hybrid Discharge in Pure Oxygen

Li, Meng; Zhu, Yimin; Wu, Dapeng; Zhang, Xiaozhuan; Guo, Jing; Zhu, Bin; Jiang, Kai

doi:10.1007/s11090-021-10207-1

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…The results showed that FeO, CuO, and ZnO can effectively promote O 3 synthesis whereas MnO 2 and Fe 2 O 3 promoted ozone decomposition rather than synthesis. Meng Li et al [11] integrated ZnO powder into a hybrid discharge (HD) reactor to investigate the effect of ZnO powder surface reaction on ozone synthesis. The results show that the use of ZnO powder for the optimal conditions with a discharge power of 0.4-3.3 W leads to an average increase of 28% and 26% in O 3 concentration and HD yield, respectively, and the enhanced O 3 synthesis in HD-ZnO is mainly attributed to the strong surface reaction catalyzed by the coating in the O2 plasma.…”

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“…Additionally, reaction(11) released a signi cant amount of O and O − , thereby promoting reactions (8) to(9). TiO 2 and Al 2 O 3 catalyst coatings had fewer oxygen vacancies, resulting in weaker O 3 decomposition reactions and a dominant role of O 3 synthesis in gas-solid interface surface catalytic reactions.Therefore, coating dielectric material with TiO 2 and Al 2 O 3 signi cantly increased O 3 production.…”

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Evaluating Discharge Performance and Catalytic Properties of Nanoscale Catalyst Dielectric Barrier Discharge System

Shi,

Xie,

Cai

et al. 2023

Plasma Chem Plasma Process

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Dielectric barrier discharge (DBD), a non-thermal plasma(NTP)technology, has a wide range of environmental applications. In this study, TiO 2 , SiO 2 , and Al 2 O 3 were coated on the surface of a quartz dielectric using a dip-coating method. The catalyst coating coatings effectively improved the local discharge intensity, thus enhancing the generation of reactive species. After discharge by the DBD system, the O atom in the middle of TiO 2 crystal is replaced by N atom doping, and the Al = O and Al OH groups on the surface of Al 2 O 3 increase. All Catalyst coating surfaces contained a small number of hydroxyl groups. TiO 2 and Al 2 O 3 surfaces had fewer oxygen vacancies. thus making O 3 synthesis dominant at the gas-solid interface.1 Introduction Dielectric barrier discharge (DBD) is a non-equilibrium gas discharge generated by placing a dielectric barrier between two electrodes. The dielectric material can be coated on the electrode surfaces or suspended within the discharge space. DBD is a reliable and cost-effective method for generating nonthermal plasma (NTP). It can be operated over a wide range of voltage frequencies (from 50 Hz to 1 MHz, alternating current) and gas pressures (from 10 4 Pa to 10 6 Pa). As a result, DBD has a wide range of applications in various elds, including material modi cation, wastewater treatment, medical treatments, and industrial production [1][2][3] . Studies have demonstrated that the synthesis of ozone in the generator can be effectively enhanced by coupling DBD with catalysts [4,5] .One of the main methods of coupling DBD with catalysts is by lling the discharge region of the DBD generator with spherical or irregularly shaped dielectric particles, forming a packed-bed dielectric barrier discharge (PB-DBD) [6][7][8] . Hafeez et al. [9]investigated a novel corona PB-DBD generator by lling the discharge region with dielectric glass beads and compared its ozone synthesis performance with an empty-bed generator. The results showed that the packed-bed plasma generator increases ozone production by approximately 24% under optimized conditions compared with the empty-bed generator. J.Wang et al. [10] lled the generator with metal oxide powders as catalysts and study the effects of catalyst powders on O 3 synthesis and decomposition.. The results showed that FeO, CuO, and ZnO can effectively promote O 3 synthesis whereas MnO 2 and Fe 2 O 3 promoted ozone decomposition rather than synthesis. Meng Li et al. [11] integrated ZnO powder into a hybrid discharge (HD) reactor to investigate the effect of ZnO powder surface reaction on ozone synthesis. The results show that the use of ZnO powder for the optimal conditions with a discharge power of 0.4-3.3 W leads to an average increase of 28% and 26% in O 3 concentration and HD yield, respectively, and the enhanced O 3 synthesis in HD-ZnO is mainly attributed to the strong surface reaction catalyzed by the coating in the O2 plasma. S. Said et al. [12] lled alumina particles into the generator to study the reaction mechanism of ozone synthes...

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Evaluating Discharge Performance and Catalytic Properties of Nanoscale Catalyst Dielectric Barrier Discharge System

Shi,

Xie,

Cai

et al. 2023

Plasma Chem Plasma Process

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Ozone production in nanosecond pulsed dielectric barrier discharge in synthetic air: The effect of pulse width

Ji,

Yuan,

Jin

et al. 2024

Vacuum

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A Review of the Application of Soot Catalysts: Focus on the Soot Oxidation-Induced Fragmentation Process

Huang,

Gao,

Liu

et al. 2024

Energy Fuels

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Diesel soot is well-known for its adverse effects on both the environment and public health, sparking significant academic interest. The use of diesel particulate filters (DPFs) represents an effective strategy for capturing and subsequently removing soot particles. However, the captured soot cannot be oxidized under exhaust conditions, and the additional fuel consumption is required to increase the oxidation temperature. The addition of catalysts can effectively reduce the oxidation temperature of soot, improve the oxidation efficiency, and save energy consumption. The widespread adoption of catalyst-coated DPF systems is largely dependent on the development of effective catalysts. This review compiles the application of catalysts in the field of diesel engine soot removal, with a focus on the influence of catalyst on soot physicochemical properties in the oxidation-induced fragmentation process. It begins with an in-depth discussion of the various catalytic mechanisms of different soot catalysts, and the factors that affect the catalytic activity are further explored. Then, this review focuses on the effects of catalysts on soot physicochemical properties in the oxidation-induced fragmentation process, and the potential synergistic effects generated by the interaction between catalysts and environmental components in the exhaust gas are further analyzed. Finally, the applications of catalysts in soot removal engineering are concluded. The review provides key insights for future research efforts aimed at enhancing catalyst efficiency.

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Enhancement of Ozone Synthesis via ZnO Coating for Hybrid Discharge in Pure Oxygen

Cited by 4 publications

References 44 publications

Evaluating Discharge Performance and Catalytic Properties of Nanoscale Catalyst Dielectric Barrier Discharge System

Evaluating Discharge Performance and Catalytic Properties of Nanoscale Catalyst Dielectric Barrier Discharge System

Ozone production in nanosecond pulsed dielectric barrier discharge in synthetic air: The effect of pulse width

A Review of the Application of Soot Catalysts: Focus on the Soot Oxidation-Induced Fragmentation Process

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