Colorimetric quantification of aqueous hydrogen peroxide in the DC plasma-liquid system

Yu, Renze; Liu, Zhaoyuan; Lin, Jiao; He, Xinyi; Liu, Linsheng; Xiong, Qing; Chen, Qiang; Ostrikov, Kostya Ken

doi:10.1088/2058-6272/abf47f

Cited by 6 publications

(2 citation statements)

References 73 publications

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“…Atmospheric pressure plasma interacting with liquids exists in various fields, such as biomedicine [1][2][3], environmental protection [4][5][6], food agriculture [7,8], and analytical chemistry [9,10]. Plasma-liquid interactions are capable of generating a large number of reactive species that play a key role in applications [11,12], such as hydroxyl radicals (OH), atomic oxygen (O), and hydrogen peroxide (H 2 O 2 ). Many researchers have worked to understand the mechanism of plasma-liquid interactions in order to control each specific process for different applications, such as increasing the content of O, OH, and H 2 O 2 in the liquid for better bactericidal effect [13] and increasing the amounts of solvated electrons and atomic hydrogen (H) for higher nanoparticle yields [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of liquid surface depression size on discharge characteristics and chemical distribution in the plasma-liquid anode system

LING 凌,

DAI 戴,

CHANG 常

et al. 2024

Plasma Sci. Technol.

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Atmospheric pressure plasma-liquid interactions exist in a variety of applications, including wastewater treatment, wound sterilization, and disinfection. In practice, the phenomenon of liquid surface depression will inevitably appear. The applied gas will cause a depression on the liquid surface, which will undoubtedly affect the plasma generation and further affect the application performance. However, the effect of liquid surface deformation on the plasma is still unclear. In this study, numerical models are developed to reveal the mechanism of liquid surface depressions affecting plasma discharge characteristics and the consequential distribution of plasma species, and further study the influence of liquid surface depressions of different sizes generated by different helium flow rates on the plasma. Results show that the liquid surface deformation changes the initial spatial electric field, resulting in the rearrangement of electrons on the liquid surface. The charges deposited on the liquid surface further increase the degree of distortion of the electric field. Moreover, the electric field and electron distribution affected by the liquid surface depression significantly influence the generation and distribution of active species, which determines the practical effectiveness of the relevant applications. This work explores the phenomenon of liquid surface depression, which has been neglected in previous related work, and contributes to further understanding of plasma-liquid interactions, providing better theoretical guidance for related applications and technologies.

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Section: Introductionmentioning

confidence: 99%

Effect of liquid surface depression size on discharge characteristics and chemical distribution in the plasma-liquid anode system

LING 凌,

DAI 戴,

CHANG 常

et al. 2024

Plasma Sci. Technol.

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“…After that, the mixed solution is cooled to room temperature. The absorption intensity of the mixed solution at 410 nm is proportional to the HCHO concentration [45][46][47], based on which the HCHO concentration is measured. Experiments are performed thrice to obtain a statistic result.…”

Section: Introductionmentioning

confidence: 99%

Visualization of gold nanoparticles formation in DC plasma-liquid systems

Liu¹,

Chen²,

Liu³

et al. 2021

Plasma Sci. Technol.

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Dual argon plasmas ignited by one direct current power source are used to treat an aqueous solution of hydrogen tetrachloroaurate-(III) trihydrate (HAuCl4 · 3H2O) which is contained in an H-type electrochemical cell. The solution contained in one cell acts as a cathode, and in the other as an anode. Experiments are carried out to directly visualize the formation process of gold nanoparticles (AuNPs) in separated cells of the H-type electrochemical reactor. The results and analyzes suggest that hydrogen peroxide and hydrated electrons generated from the plasma-liquid interactions play the roles of reductants in the solutions, respectively. Hydrogen peroxide can be generated in the case of the liquid being a cathode or an anode, while most of hydrated electrons are formed in the case of the liquid being an anode. Therefore, the reduction of the AuCl4 − ions is mostly attributed to the hydrogen peroxide as the liquid acts as a cathode, while to the hydrogen peroxide and hydrated electrons as the liquid acts as an anode. Moreover, the pH value of the solution can be used to tune the formation processes and the final form of the AuNPs due to its mediation of reductants.

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The Chemical Composition of Species Formed in a Water Anode Under the Action of a Direct Current Electric Discharge: Comparison with Liquid Cathode—Experiment and Simulation

Shutov

Smirnova

Ivanov

et al. 2023

Plasma Chem Plasma Process

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Colorimetric quantification of aqueous hydrogen peroxide in the DC plasma-liquid system

Cited by 6 publications

References 73 publications

Effect of liquid surface depression size on discharge characteristics and chemical distribution in the plasma-liquid anode system

Effect of liquid surface depression size on discharge characteristics and chemical distribution in the plasma-liquid anode system

Visualization of gold nanoparticles formation in DC plasma-liquid systems

The Chemical Composition of Species Formed in a Water Anode Under the Action of a Direct Current Electric Discharge: Comparison with Liquid Cathode—Experiment and Simulation

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