Influence of Gas Type on Reactive Species Formation, Antimicrobial Activity, and Cytotoxicity of Plasma-Activated Water Produced in a Coaxial DBD Reactor

Miranda, F. S.; Tavares, V. K. F.; Silva, D. M.; Milhan, N. V. M.; Neto, N. F. Azevedo; Gomes, M. P.; Pessoa, R. S.; Koga-Ito, C. Y.

doi:10.1007/s11090-024-10475-7

Cited by 2 publications

(2 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For gas flow control, an air rotameter (FLDA3215ST, Omega Engineering Inc., Stamford, USA) was employed. Further specifications of the DBD reactor geometry are detailed in [9,13,17].…”

Section: Hybrid Plasma Discharge Setupmentioning

confidence: 99%

“…Additionally, PAW often results in a notable decrease in pH levels, likely due to the increased concentrations of nitrite and nitrate, and changes in conductivity caused by the presence of these ions [11]. Despite the promising applications of PAW, studies show that the composition of PAW is sensitive to several parameters such as treatment time [12], type of gas [13], and plasma sources [8][9][10]. Due to the diversity of these parameters, controlling reactive species and pH for a given application is still a challenge in this area of study.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physical and chemical characteristics of plasma-activated water generated by hybrid dielectric barrier discharge and gliding arc discharge

Azevedo Neto,

Miranda,

Moreira Junior

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

This research explores the synergistic application of Dielectric Barrier Discharge (DBD) and Gliding Arc Plasma Jet (GAPJ) in a Hybrid Plasma Discharge (HPD) setup for enhanced water activation. The HPD system demonstrated balanced and sustained generation of reactive oxygen and nitrogen species (RONS), maintaining efficiency at higher specific input energy (SIE) values. Comparative analyses with DBD and GAPJ systems highlighted the superior performance of the HPD system in generating RONS and modifying water's molecular structure. Key observations included a decrease in water's pH and an increase in oxidation-reduction potential, total dissolved solids, and conductivity, stabilizing beyond 5 L/min airflow and 10 min of treatment. UV-Vis spectroscopy identified nitrites, nitrates, hydrogen peroxide, and nitrous acid, while Raman spectroscopy captured shifts in vibrational modes, particularly in librational and O–H stretching bands. These changes correlated with alterations in reactive species concentrations and pH levels. Overall, the HPD system emerged as a versatile and efficient approach for generating plasma-activated water, suitable for applications in microbial deactivation, surface sterilization, and electrocatalytic process optimization, offering stable and continuous production of reactive species across a range of SIE values.

show abstract

“…For gas flow control, an air rotameter (FLDA3215ST, Omega Engineering Inc., Stamford, USA) was employed. Further specifications of the DBD reactor geometry are detailed in [9,13,17].…”

Section: Hybrid Plasma Discharge Setupmentioning

confidence: 99%