Scholarlink

<p>Contact electrification (CE), one of the earliest documented physical phenomena, has traditionally been associated with triboelectric charging but rarely considered as a driver of chemical transformations. Here we show that CE generates radicals at solid-liquid interfaces, establishing contact-electro-chemistry (CE-Chemistry) as a metal-catalyst-free route that uses ambient mechanical energy. Ultrasonically driven contact-separation of fluorinated ethylene propylene (FEP) particulates in brine generates hydroxyl radicals (•OH) and chlorine radicals (•Cl), forming active chlorine [hypochlorous acid (HOCl) and hypochlorite ions (ClO<sup>−</sup>)], without detectable chlorine gas (Cl<sub>2</sub>) production. Using natural seawater, this strategy achieves active chlorine production of 208.8 μmol g<sup>−1</sup> h<sup>−1</sup> and operates for over 700 h without detectable FEP dissolution or toxic intermediates. Cation hydration engineering modulates interfacial electrical double layers, strengthening triboelectric fields and tuning reaction kinetics. This work enables Cl<sub>2</sub>-free disinfectant production from brine without external bias or illumination, opening avenues for heterogeneous catalysis and CE-driven reaction design.</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

A triboelectric radical generation route to chlorine disinfectants from brine

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月7日

查看全文
  • Han Qian,
  • Jianming Liu,
  • Ning Wu,
  • Shaoxin Li,
  • Xinhong Song,
  • Feiyao Yang,
  • Morten Willatzen,
  • Jiajia Shao,
  • Vishnu Shankar,
  • Daping Chu,
  • Richard N. Zare,
  • Zhong Lin Wang,
  • Di Wei

摘要

Contact electrification (CE), one of the earliest documented physical phenomena, has traditionally been associated with triboelectric charging but rarely considered as a driver of chemical transformations. Here we show that CE generates radicals at solid-liquid interfaces, establishing contact-electro-chemistry (CE-Chemistry) as a metal-catalyst-free route that uses ambient mechanical energy. Ultrasonically driven contact-separation of fluorinated ethylene propylene (FEP) particulates in brine generates hydroxyl radicals (•OH) and chlorine radicals (•Cl), forming active chlorine [hypochlorous acid (HOCl) and hypochlorite ions (ClO−)], without detectable chlorine gas (Cl2) production. Using natural seawater, this strategy achieves active chlorine production of 208.8 μmol g−1 h−1 and operates for over 700 h without detectable FEP dissolution or toxic intermediates. Cation hydration engineering modulates interfacial electrical double layers, strengthening triboelectric fields and tuning reaction kinetics. This work enables Cl2-free disinfectant production from brine without external bias or illumination, opening avenues for heterogeneous catalysis and CE-driven reaction design.