State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, 361005, China.
CAS Center for Excellence in Nanoscience, Beijing Institute of Nano energy and Nano systems, Chinese Academy of Sciences, Beijing, 100083, China.
Angew Chem Int Ed Engl. 2023 May 15;62(21):e202300604. doi: 10.1002/anie.202300604. Epub 2023 Apr 17.
Hydrogen peroxide (H O ) is an indispensable basic reagent in various industries, such as textile bleach, chemical synthesis, and environmental protection. However, it is challenging to prepare H O in a green, safe, simple and efficient way under ambient conditions. Here, we found that H O could be synthesized using a catalytic pathway only by contact charging a two-phase interface at room temperature and normal pressure. Particularly, under the action of mechanical force, electron transfer occurs during physical contact between polytetrafluoroethylene particles and deionized water/O interfaces, inducing the generation of reactive free radicals (⋅OH and ⋅O ), and the free radicals could react to form H O , yielding as high as 313 μmol L h . In addition, the new reaction device could show long-term stable H O production. This work provides a novel method for the efficient preparation of H O , which may also stimulate further explorations on contact-electrification-induced chemistry process.
过氧化氢（H2O2）是纺织漂白、化学合成和环境保护等各种工业中不可或缺的基础试剂。然而，在环境条件下以绿色、安全、简单和高效的方式制备 H2O2 具有挑战性。在这里，我们发现 H2O2 可以通过在室温常压下仅通过接触充电两相界面的催化途径合成。特别是，在机械力的作用下，聚四氟乙烯颗粒与去离子水/O 界面之间的物理接触会发生电子转移，诱导产生活性自由基（·OH 和·O2-），自由基可以反应形成 H2O2，生成高达 313 μmol·L-1·h-1。此外，新型反应装置可以长期稳定地产生 H2O2。这项工作为 H2O2 的高效制备提供了一种新方法，也可能激发对接触带电诱导化学过程的进一步探索。
