Scholarlink

<p>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) as a decontaminant has been paid attention in the world. The activation system of H<sub>2</sub>O<sub>2</sub> by organic activators has recently become a research hotspot in the decontamination of chemical warfare agents and hazardous chemicals. In this paper, the activation mechanism of H<sub>2</sub>O<sub>2</sub> by guanidine activators had been investigated via some in-situ analytic methods, such as laser Raman spectroscopy (LRS), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR), chemiluminescence (CL) and so on. The results showed that 1-acetylguanidine (ACG) effectively activates H<sub>2</sub>O<sub>2</sub> to generate multiple reactive oxygen species (ROS), including peroxyimide ions, HOO<sup>−</sup>, ·O<sub>2</sub><sup>−</sup>, <sup>1</sup>O<sub>2</sub>, and ·OH, with <sup>1</sup>O<sub>2</sub> being the dominant species. The optimum activation conditions included that, the molar ratio of reactive oxygen species (ROS) and ACG should be the range of 1:1–1:3; the pH value of the active reaction solution could be between 8.0 and 10.0; the activation reaction temperature was about 30&#xa0;℃. Meanwhile, the active solution of H<sub>2</sub>O<sub>2</sub>/ACG under the best conditions had been used to decontaminate 2-chloroethyl ethyl sulfide (2-CEES) which was a simulant of chemical warfare agent sulfur mustard. When the volume ratio of decontaminant solution and 2-CEES liquid drops was about 50:1, the decontamination efficiency of 2-CEES had been reached to 99.9% after 30&#xa0;min in the H<sub>2</sub>O<sub>2</sub>/ACG solution. Compared with traditional decontamination formulations, the H<sub>2</sub>O<sub>2</sub>/ACG system offers advantages of mild reaction conditions and excellent environmental compatibility, holding promising application prospects in the remediation of specially contaminated environments and emergency disposal of hazardous chemicals.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Efficient degradation of a sulfur mustard simulant by a hydrogen peroxide/guanidine system: mechanism and performance

  • 期刊论文

  • 发表日期：

    2026年3月23日

查看全文
  • Boren Xiao,
  • Lingce Kong,
  • Jinxing Yang,
  • Yong Xu,
  • Liang Yu,
  • Lihong Qi

摘要

Hydrogen peroxide (H2O2) as a decontaminant has been paid attention in the world. The activation system of H2O2 by organic activators has recently become a research hotspot in the decontamination of chemical warfare agents and hazardous chemicals. In this paper, the activation mechanism of H2O2 by guanidine activators had been investigated via some in-situ analytic methods, such as laser Raman spectroscopy (LRS), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR), chemiluminescence (CL) and so on. The results showed that 1-acetylguanidine (ACG) effectively activates H2O2 to generate multiple reactive oxygen species (ROS), including peroxyimide ions, HOO−, ·O2−, 1O2, and ·OH, with 1O2 being the dominant species. The optimum activation conditions included that, the molar ratio of reactive oxygen species (ROS) and ACG should be the range of 1:1–1:3; the pH value of the active reaction solution could be between 8.0 and 10.0; the activation reaction temperature was about 30 ℃. Meanwhile, the active solution of H2O2/ACG under the best conditions had been used to decontaminate 2-chloroethyl ethyl sulfide (2-CEES) which was a simulant of chemical warfare agent sulfur mustard. When the volume ratio of decontaminant solution and 2-CEES liquid drops was about 50:1, the decontamination efficiency of 2-CEES had been reached to 99.9% after 30 min in the H2O2/ACG solution. Compared with traditional decontamination formulations, the H2O2/ACG system offers advantages of mild reaction conditions and excellent environmental compatibility, holding promising application prospects in the remediation of specially contaminated environments and emergency disposal of hazardous chemicals.