Nanosecond‐pulsed microbubble plasma reactor for plasma‐activated water generation and bacterial inactivation

Self Cite

Hydrogen peroxide solutions are often utilized in logistics sterilization by misting, although their sterilizing capacity is diminished. To meet the high‐efficient and long‐term sterilization requirements of logistics, the reactivity and bactericidal efficiency are improved with plasma‐activated H2O2 solutions mist (PAHM). PAHM promotes an approximately double increase in the concentration of reactive nitrogen species, four times increase in the O3 concentration, and 36.2 times increase in H2O2 compared with water mist activation. Escherichia coli and Staphylococcus aureus are selected as the model microorganisms to evaluate the bactericidal activity. Results show that PAHM can reduce the numbers of both bacteria by two orders of magnitude after 3 min of treatment, similar to inactivated H2O2 for 10 min of treatment.

Section: Chemical Reaction Analysis Methodsmentioning

confidence: 99%

High reactivity and bactericidal effects of plasma‐activated mist from hydrogen peroxide solution

Zhou

Jiang

Zhang

et al. 2022

Self Cite

“…The similar results can be also found in some other plasma types with high discharge power. [33,34] Considering that the high liquid temperature arised from the boiling water can decompose the H 2 O 2 , the actual H 2 O 2 yield should be much higher during the discharge process. For the similar reason, no O 3 was detected in the liquid product owing to its unsolubility in water under high temperature environment.…”

Section: The Optical and Particle Characteristics Of Lca Discharge Pl...mentioning

confidence: 99%

Characteristics of liquid‐phase continuous arc discharge plasma

Wang

Xin

Sun

2022

Liquid‐phase discharge has the advantages of high plasma density, simultaneous generation of multiple physical and chemical effects, and high gas‐liquid mass transfer efficiency. However, the large‐capacity treatment of liquid by plasma has always been a research difficulty. In this study, liquid‐phase continuous arc (LCA) discharge plasma is realized for the first time, which can quickly propagate for a long distance in liquid. To better understand this new type of liquid‐phase discharge, the time‐space characteristics, electrical characteristics, optical characteristics and particle characteristics of the LCA discharge plasma are diagnosed. The results show that the LCA discharge plasma can achieve a rapid propagation over 1 m in the liquid, and the propagation time is on the order of milliseconds. Meanwhile, the discharge can directly generate a variety of active species (·OH, ·O, ·H, H2O2) in the liquid, which can be continuously produced as the plasma moves. The LCA discharge plasma has good application prospects in water treatment, energy conversion, and so on.

“…[ 1–3 ] For example, it has been proved that the reactive oxygen and nitrogen species (RONS) could disturb the cell membrane structure or trigger oxidative stress reactions while interacting with cells or bacteria, and these effects have been employed to treat some skin diseases or even tumors. [ 4–8 ]…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] For example, it has been proved that the reactive oxygen and nitrogen species (RONS) could disturb the cell membrane structure or trigger oxidative stress reactions while interacting with cells or bacteria, and these effects have been employed to treat some skin diseases or even tumors. [4][5][6][7][8] The development of plasma medicine relies on the progress of the plasma source. Atmospheric pressure plasma jet (APPJ) is the most commonly used reactor in plasma medicine.…”

mentioning

confidence: 99%

Self‐enhanced plasma brush for therapeutic use in dermatology and its safety assessment

Zhao

Yang

Liu

et al. 2022

In this study, a self-enhanced plasma brush based on a single dielectric barrier discharge was developed by optimizing the load position for treatment in dermatology. The electrical, optical, and temperature characteristics of the fabricated reactor were investigated. Results show that the length and the width of the plasma brush could reach 20 and 15 mm, respectively. The electric field and the resulting discharge