中国物理B ›› 2022, Vol. 31 ›› Issue (4): 48706-048706.doi: 10.1088/1674-1056/ac523d

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Increasing the ·OH radical concentration synergistically with plasma electrolysis and ultrasound in aqueous DMSO solution

Chao Li(李超)1,2, De-Long Xu(徐德龙)1,2,†, Wen-Quan Xie(谢文泉)3, Xian-Hui Zhang(张先徽)3,‡, and Si-Ze Yang(杨思泽)3   

  1. 1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Fujian Engineering Research Center for EDA, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen Key Laboratory of Multiphysics Electronic Information, Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen 361005, China
  • 收稿日期:2021-11-14 修回日期:2022-01-06 接受日期:2022-02-07 出版日期:2022-03-16 发布日期:2022-03-21
  • 通讯作者: De-Long Xu, Xian-Hui Zhang E-mail:xudelong@mail.ioa.ac.cn;zhangxh@xmu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51877184 and 11474305) and the National Science and Technology Major Project of China (Grant No. 2011ZX05032-003-003). Rhoda E. and Edmund F. Perozzi, PhDs, greatly assisted with the content and English editing.

Increasing the ·OH radical concentration synergistically with plasma electrolysis and ultrasound in aqueous DMSO solution

Chao Li(李超)1,2, De-Long Xu(徐德龙)1,2,†, Wen-Quan Xie(谢文泉)3, Xian-Hui Zhang(张先徽)3,‡, and Si-Ze Yang(杨思泽)3   

  1. 1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Fujian Engineering Research Center for EDA, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen Key Laboratory of Multiphysics Electronic Information, Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen 361005, China
  • Received:2021-11-14 Revised:2022-01-06 Accepted:2022-02-07 Online:2022-03-16 Published:2022-03-21
  • Contact: De-Long Xu, Xian-Hui Zhang E-mail:xudelong@mail.ioa.ac.cn;zhangxh@xmu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51877184 and 11474305) and the National Science and Technology Major Project of China (Grant No. 2011ZX05032-003-003). Rhoda E. and Edmund F. Perozzi, PhDs, greatly assisted with the content and English editing.

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摘要： In recent years, significant increases in waste processing and material engineering have been seen by using advanced oxidation processes. The treatment results and energy yields of these processes are largely determined by the generation and retention of reactive oxygen species (ROS). However, increasing the amount of ROS remains a key challenge because of the unavailability of performance- and energy-efficient techniques. In this study, plasma electrolysis, ultrasound, and plasma electrolysis combined with ultrasound were used to treat dimethyl sulfoxide (DMSO) solutions, and the results showed that the two methods can synergistically convert filament discharge into spark discharge, and the conversion of the discharge mode can significantly increase the concentration of OH radicals and effectively improve the efficiency of DMSO degradation. We verified the rationality of the results by analyzing the mass transfer path of ROS based on the reaction coefficients and found that the ·OH radicals in aqueous solution were mainly derived from the decomposition of hydrogen peroxide. These findings indicated that the synergistic action of plasma electrolysis and ultrasound can enhance the production of chemically reactive species, and provide new insights and guiding principles for the future translation of this combined strategy into real-life applications. Our results demonstrated that the synergistic strategy of ultrasound and plasma electrolysis is feasible in the switching mode and increasing the ROS, and may open new routes for materials engineering and pollutant degradation.

关键词: plasma electrolysis, ultrasound, reactive species, OH radical

Abstract: In recent years, significant increases in waste processing and material engineering have been seen by using advanced oxidation processes. The treatment results and energy yields of these processes are largely determined by the generation and retention of reactive oxygen species (ROS). However, increasing the amount of ROS remains a key challenge because of the unavailability of performance- and energy-efficient techniques. In this study, plasma electrolysis, ultrasound, and plasma electrolysis combined with ultrasound were used to treat dimethyl sulfoxide (DMSO) solutions, and the results showed that the two methods can synergistically convert filament discharge into spark discharge, and the conversion of the discharge mode can significantly increase the concentration of OH radicals and effectively improve the efficiency of DMSO degradation. We verified the rationality of the results by analyzing the mass transfer path of ROS based on the reaction coefficients and found that the ·OH radicals in aqueous solution were mainly derived from the decomposition of hydrogen peroxide. These findings indicated that the synergistic action of plasma electrolysis and ultrasound can enhance the production of chemically reactive species, and provide new insights and guiding principles for the future translation of this combined strategy into real-life applications. Our results demonstrated that the synergistic strategy of ultrasound and plasma electrolysis is feasible in the switching mode and increasing the ROS, and may open new routes for materials engineering and pollutant degradation.

Key words: plasma electrolysis, ultrasound, reactive species, OH radical

中图分类号:  (Biophysical techniques (research methods))

  • 87.80.-y
52.80.Wq (Discharge in liquids and solids) 52.77.-j (Plasma applications)