Upgrading the production of plasma-activated water for sterilization by preloading long-lived reactive species

IF 3.1 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Physics D: Applied Physics Pub Date : 2024-07-16 DOI:10.1088/1361-6463/ad60d9
Zifeng Wang, Xiangyu Wang, Shenghang Xu, Dingxin Liu, Jingyao Zhang, Qiuyi Yue, Luge Wang, Pengfei Zhang, Yikang Jia, Jishen Zhang, Li Guo, Dandan Pei, Chang Liu and Mingzhe Rong
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Abstract

Plasma-activated water (PAW) has broad prospects in the medical field because it is rich in reactive nitrogen and oxygen species. However, in most production processes of PAW, a large proportion of gaseous reactive species is converted into long-lived aqueous species with minor biochemical activity, and only a small proportion is converted into crucial short-lived aqueous species, which results in inefficient activation of PAW. Given the indispensability and easy availability of long-lived aqueous species, this study proposes to preload HNO3 and H2O2 into water and then generate plasma to induce short-lived aqueous species, thus improving the production rate of PAW. The addition of 1 mM HNO3 and 0.5% H2O2 results in a 100-fold increase in the production rate of the PAW with a bactericidal rate exceeding 99.9999%, and the preloaded HNO3 and H2O2 promote the dissolution of O3 and the generation of short-lived aqueous species, respectively. Moreover, the preloaded species improve the validity period of PAW and the resistance of sterilization to acid-base neutralizers. This study offers a novel approach for upgrading the production of PAW, which holds promise for realizing rapid PAW production with a portable device for clinical medical applications.
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通过预载长寿命活性物种提升用于灭菌的等离子活化水的生产水平
等离子活化水(PAW)富含活性氮和氧物种,因此在医疗领域具有广阔的前景。然而,在大多数等离子活化水的生产过程中,大部分气态活性物种被转化为生化活性较低的长效水物种,只有一小部分被转化为关键的短效水物种,从而导致等离子活化水的活化效率低下。鉴于长寿命水物种的不可或缺性和易得性,本研究提出将 HNO3 和 H2O2 预先加入水中,然后生成等离子体来诱导短寿命水物种,从而提高 PAW 的生成率。加入 1 mM HNO3 和 0.5% H2O2 后,PAW 的产生率提高了 100 倍,杀菌率超过 99.9999%。此外,预载的物种还能提高 PAW 的有效期和对酸碱中和剂的杀菌能力。这项研究为提高 PAW 的生产水平提供了一种新方法,有望实现临床医学应用中便携式设备的快速 PAW 生产。
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来源期刊
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics 物理-物理:应用
CiteScore
6.80
自引率
8.80%
发文量
835
审稿时长
2.1 months
期刊介绍: This journal is concerned with all aspects of applied physics research, from biophysics, magnetism, plasmas and semiconductors to the structure and properties of matter.
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